International Journals(Research Article):


  • A.K. Shettihalli, , S.K. Palanirajan, and S.N. Gummadi (2021) Are Cysteine residues of human phospholipid scramblase 1 imperative in Pb2+ and Hg2+ binding induced phospholipids scrambling?, European Biophysics Journal, Impact factor: 2.527
  • S. Malla, K.J. Jisha, R. Gardas and S.N. Gummadi(2021)DBU and TMG based ILs enhanced thermal stability of xylose reductase at extreme pH through specific ion effect. Journal of Molecular Liquids, 328, 115394. Impact factor: 5.0 https://doi.org/10.1016/j.molliq.2021.115394
  • M. Koyiloth and S.N. Gummadi (2021) Cholesterol interaction attenuates scramblase activity of SCRM-1 in the artificial membrane. BBA Biomembranes, Accepted, Impact factor: 3.4
  • R. Rajesh, S.N. Gummadi(2021) α-amylase and cellulase production by novel halotolerant Bacillus sp.PM06 isolated from sugarcane pressmud. Biotechnology and Applied Biochemistry, Accepted. Impact factor: 1.64
  • M.K. Shanmugam and S.N. Gummadi (2020) Degradation of synthetic coffee wastewater using induced cells of Pseudomonas sp. NCIM 5235. International Journal of Environmental Science and Technology (in press). Impact factor: 2.54
  • S. Malla and S.N. Gummadi(2020) Simultaneous optimization of activity and stability of xylose reductase from D. nepalensis NCYC 3413 using statistical experimental design. Protein and Peptide Letters (in press). Impact factor: 1.168
  • M.K. Shanmugam, S. Sriman and S.N. Gummadi (2020) Online measurement of dissolved oxygen in shake flask to elucidate its role on caffeine degradation. Indian Chemical Engineer,
  • S.K. Palanirajan, G. Punitha and N. Gummadi (2020) Polystyrene adsorbents: Rapid and efficient surrogate to dialysis in membrane protein purification. Scientific reports,10:16334. https://doi.org/10.1038/s41598-020-73522-1 IF: 4.12
  • S. Chakraborty, G. Suresh Kumar and S. N. Gummadi (2020) Influence of crucial reservoir properties and microbial kinetic parameters on enhanced oil recovery by microbial flooding under nonisothermal conditions: Mathematical modelling and numerical simulation. Journal of Petroleum Science and Engineering, 195, 107831. https://doi.org/10.1016/j.petrol.2020.107831. IF: 3.706
  • K. Jagadeeshwar, V. Gayathri, Abhijit P. Deshpande and S.N. Gummadi (2020) Molecular association and gelling characteristics of curdlan. Current Science, 118: 1436-1442.
  • S. Boddapati, Randhir Rai and S. N. Gummadi (2020) Structural analysis and antioxidative properties of mutan (water-insoluble glucan) and caroboxymethylmutan from Streptococcus mutans. Process Biochemistry, 97: 130-139. Doi.org/10.1016/j.procbio.2020.07.006. IF: 2.95
  • Chakraborty, G. Suresh Kumar and S. N. Gummadi (2020) Numerical modeling on the influence of effective porosity, microbial kinetics and operational parameters on enhanced oil recovery by microbial flooding within sandstone formation. Society for Petroleum Engineering Journal, doi:10.2118/200639-MS. IF: 3.1
  •  A. Senthilkumar, Swati S. Dash, Kartik Mitra, M. Doble and S.N. Gummadi (2020) Potential of Terminalia arjuna as a promising phytoremedy against COVID19: DDPH Scavenging, Catalase Inhibition and Docking studies. ChemRixv. doi.org/10.26434/chemrixv.12600587.v1
  • H. Muthukumar, M.K. Shanmugam and S.N. Gummadi (2020) Caffeine degradation in synthetic wastewater using silver ferrite nanoparticles fabricated via green route using Amaranthus blitum leaf extract, Journal of Water Processing, 36, 101382. doi:10.1016/j.jwpe.2020.101382. IF:3.47
  • H. Muthukumar,S.K. Palanirajan, M.K. Shanmugam and S.N. Gummadi (2020) Plant extract mediated synthesis enhanced the functional properties of silver ferrite nanoparticles over chemical synthesis, Biotechnology Reports, 26, e00469. doi: 10.1016/j.btre.2020e00469
  • S. Malla and S.N. Gummadi (2020) Counteraction of osmolytes on pH induced unfolding of xylose reductase from Debaryomycesnepalensis, European Biophysics Journal, 49: 267-277. doi: 10.1007/s00249-020-01432-1. Impact factor: 2.527
  • R. Radha and S.N. Gummadi (2020) Optimization of physical parameters pH and temperature for maximized activity and stability of Vibrio cholera L-asparaginase by statistical experimental design, Indian Chemical Engineer, 62: 1-10. doi:10.1080/00194506.2020.1758224.
  • S.K. Palanirajan and S.N. Gummadi (2020) Heavy metals mediated phospholipids scrambling by human phospholipid scramblase 3: a probable role in mitochondrial apoptosis, Chemical Research in Toxicology, 33: 553-564.doi: 10.1021/acs.chemrestox.9b00406. Impact factor: 3.274
  • M. Koyiloth and S.N. Gummadi (2020) Molecular cloning and biochemical characterization of the phospholipid scramblase SCRM-1 from Caenorhabditis elegans, European Biophysics Journal, 49: 163-173. https://doi.org/10.1007/s00249-020-01423-2. Impact factor:2.527
  • V. Nagaroor and S.N. Gummadi (2020) Biochemical characterization of an esterase from Clostridium acetobutylicum with novel GYSMG pentapeptide motif at the catalytic domain, Journal of Industrial Microbiology and Biotechnology, 47: 169-181. doi: 10.1007/s10295-019-02253-8.Impact factor:2.993
  • H. Muthukumar, S. Malla, M. Matheswaran and S.N. Gummadi (2020) Immobilization of xylose reductase enzyme on cysteine- functionalized Murrayakoenigii mediated magnetite nanoparticles, Materials Letters, 261, 127125. https://doi.org/10.1016/j.matlet.2019.127125Impact factor:3.019
  •  R. Rai, S.N. Gummadi and D. Chand (2019) Cuprous Oxide or copper coated jute stick pieces at air-water interface for prevention of aerial contamination in potable water, ACS OMEGA, 4, 27, 22514-22520 doi: 10.1021/acsomega.9b03184.Impact factor:2.58
  •  J. Satya, Eswari, P. Sankar, S.N. Gummadi, T. Panda and Ch. Venkateswarlu (2019) Metabolic pathway analysis and dynamic macroscopic model development for lovastatin production by Monascuspurpureus using metabolic foot printing concept, Biochemical Engineering Journal, 154: 107437. https://doi.org/10.1016/j.bej.2019.107437. Impact factor:3.371
  • Y. Deepthi, S.M. Shiva Nagendra and S.N. Gummadi(2019) Characterization and health risk assessment of indoor dust in biomass and LPG based households of rural Telangana, India, Journal of Air and Waste Management Association, 69,1438-145. https://doi.org/10.1080/10962247.2019.166887. Impact factor: 1.858
  • R. Radha and S.N Gummadi(2019) pH-dependent thermal stability of Vibrio cholerae L-asparaginase, Protein and Peptide Letters,26(10):743-750. doi: 10.2174/0929866526666190617092944. Impact factor: 1.168
  • B. Sundaramoorthy and S.N. Gummadi (2019) Screening of new yeast Pichia manchurica for arabitol production, Journal of Basic Microbiology, 59:256-266.https://doi.org/10.1002/jobm.201800366. Impact factor:1.580
  • H.A Antony, N.S.Topno, S.N. Gummadi, D. Siva Sankar, R. Krishna and S.C.Parija (2019) In silico modeling of Plasmodium falciparum chloroquine resistance transporter protein and biochemical studies suggest its key contribution to chloroquine resistance, Acta Tropica, 189: 84-93. https://doi.org/10.1016/j.actatropica.2018.10.001. Impact factor:2.50.
  • B.Paidimuddala, S.B. Mohapatra, S.N. Gummadi and N.Manoj (2018) Crystal structure of yeast xylose reductase in complex with a novel NADP-DTT adduct provides insights into substrate recognition and catalysis. Federation of European Biochemical Societies Journal, 285(23):4445-4464. doi:10.1111/febs.14667. Impact factor: 4.530.
  • Y. Deepthi, S.M. Shiva Nagendra and S.N. Gummadi (2018) Characteristics of indoor air pollution and estimation of respiratory dosage under varied fuel-type and kitchen-type in the rural areas of Telangana state in India, Science of the Total Environment,650(1):616-625. https://doi.org/10.1016/j.scitotenv.2018.08.381.Impact factor: 4.61
  • S. Retnadhas and S.N. Gummadi. (2018) Identification and characterization of oxidoreductase component (NdmD) of methylxanthine oxygenase system in Pseudomonas sp. NCIM 5235, AppliedMicrobiologyandBiotechnology, 102:7913–7926, doi:10.1007/s00253-018-9224-x Impact factor: 3.420
  • S.K. Palanirajan and S.N. Gummadi(2018) Rapid method for an enhanced recovery of biologically active human phospholipid scramblase 1 from inclusion bodies, Analytical Biochemistry, 556: 104-111. doi:10.1016/j.ab.2018.06.028. Impact Factor:2.275.
  • S.M. Pappu and S.N. Gummadi. (2018) Effect of cosubstrate on xylitol production by Debaryomycesnepalensis NCYC 3413: a cybernetic modelling approach, Process Biochemistry, 69:12-21. doi:org/10.1016/j.procbio.2018.03.023, Impact Factor: 2.616.
  •  S. Malla and S.N. Gummadi(2018) Thermal stability of xylose reductase from Debaryomycesnepalensis NCYC 3413: deactivation kinetics and structural studies, Process Biochemistry 67:71-79. https://doi.org/10.1016/j.procbio.2018.01.010. Impact factor: 2.616
  • R. Radha, N. Arumugam and S.N. Gummadi(2018) Glutaminase free L-asparaginase from Vibrio cholerae: Heterologous expression, purification and biochemical characterization. International Journal of Biological Macromolecules, 111: 129-138. doi: 10.1016/j.ijbiomac.2017.12.165, Impact Factor: 3.929.
  • S.K.Palanirajan, U.Sivagnanam, S. Muruganand S.N. Gummadi (2017) In vitro reconstitution and biochemical characterization of human phospholipid scramblase 3: phospholipid specificity and metal ion binding studies. Biological Chemistry, 399(4):361-374. doi: 10.1515/hsz-2017-0309. Impact Factor:3.022.
  • M.K Singh, S. Shivakumaraswamyand S.N. Gummadi and Manoj N (2017) Role of an N-terminal extension in stability and catalytic activity of a hyperthermostable α/β hydrolase fold esterase, Protein Engineering, Design and Selection, 30(8): 559–570. doi:10.1093/protein/gzx049. Impact factor: 1.881.
  • S. Ayothiraman, S.N. Gummadi and T. Panda (2017) Comparison of the elution characteristics of individual forms of lovastatin in both isocratic and gradient modes and HPLC-PDA method development for pure and fermentation derived lovastatin, Preparative Biochemistry and Biotechnology 47(9):901-908. doi: 10.1080/10826068.2017.1365239. Impact factor: 1.241
  • B. Paidimuddala, G.K. Aradhyam and S.N. Gummadi (2017) A halotolerant aldose reductase from Debaryomycesnepalensis: gene isolation, overexpression and biochemical characterization, Royal Society of Chemistry Advances, 7: 20384-20393. doi:10.1039/C7RA01697B. Impact Factor: 2.936.
  • B. Paidimuddala, A. Rathod and S.N. Gummadi (2017) Inhibition of Debaryomycesnepalensisxylose reductase by lignocellulose derived by-products, Biochemical Engineering Journal 121: 73-82. https://doi.org/10.1016/j.bej.2017.01.019. Impact Factor:3.226.
  • S.M. Pappu and S.N. Gummadi (2017) Artificial neural network and regression coupled genetic algorithm to optimize parameters for enhanced xylitol production by Debaryomycesnepalensis in bioreactor, Biochemical Engineering Journal 120: 136-145. https://doi.org/10.1016/j.bej.2017.01.010.Impact factor: 3.226.
  • S.M. Pappu and S.N. Gummadi (2016) Modelling and simulation of xylitol production in bioreactor by Debaromycesnepalensis NCYC3413 using unstructured and artificial neural network models, Bioresource Technology 220: 490-499. doi:10.1016/j.biortech.2016.08.097. Impact factor: 5.807
  • S.M. Pappu and S.N. Gummadi (2016) Multi response optimization for enhanced xylitol production by Debaryomyces nepalensis in bioreactor 6: 151.
  • J.M. Vinnakota and S.N. Gummadi (2016) Snail represses the expression of human phospholipid scramblase 4 gene, Gene S0378-1119(16)30513-3.
  • A.V. Nair, S.N. Gummadi and M. Doble (2016) Characterization and biological activities of cyclic (1 → 3, 1 → 6)-β-glucans from Bradyrhizobium japonicum, Biotechnology Letters (in press).
  • A.V. Nair, S.N. Gummadi and M. Doble (2016) Process optimization and kinetic modelling of cyclic (1→3, 1→6)-β-glucans production from Bradyrhizobium japonicum MTCC120, Journal of Biotechnology 226:35-43.
  • U. Sivagnanam, S.N. Murthy and S.N. Gummadi (2016) Identification and characterization of a novel nuclease activity of human phospholipid scramblase 1, BMC Biochemistry 17:10.
  • P. Sivasankar, A.R. Kanna, G. S. Kumar and S.N. Gummadii (2016) Numerical modelling of biophysicochemical effects on multispecies reactive transport in porous media involving Pseudomonas putida for potential microbial enhanced oil recovery application, Bioresource Technology 211: 348-359.
  • V. Poondla, S.K. Yannam, S.N. Gummadi, R. Subramanyam and V.S.O. Reddy (2016) Enhanced production of pectinase by Saccharomyces cerevisiae isolate using fruit and agro-industrial wastes: Its application in fruit and fiber processing, Biocatalysis and Agricultural Biotechnology 6: 40-50.
  • J.M. Vinnakota and S.N. Gummadi (2016) Two c-Myc binding sites are crucial in upregulating the expression of human phospholipid scramblase 1 gene, Biochemical and Biophysical Research Communication 469: 412-417.
  • J.S.M. Pappu, T. Basak and S.N. Gummadi (2015) Mathematical modeling of macroscale phenomena: oxygen transfer for Solid-state fermentation in static tray bioreactor, British Biotechnology Journal 9(3): 1-14.
  • A. Seenivasan, S.N. Gummadi, T.Panda and T. Theodore (2015) Quantification of Lovastatin by Monascuspurpureus, The Open Biotechnology Journal 9: 6-13.
  • V.G. Francis, S.N. Gummadi (2015) Biochemical evidence for Ca2+ independent functional activation of hPLSCR1 at acidic pH, Cellular and Molecular Biology Letters 20 (2): 177-195.
  • K. HimaBindu, S.N. Gummadi (2015) Effect of kLa and fed-batch strategies for enhanced production of xylitol by Debaryomyces nepalensis NCYC 3413, British Biotechnology Journal 5: 24-36
  • A. Retnadas, S.N. Gummadi (2014) Optimization of process conditions for biotransformation of caffeine to theobromine using induced whole cells of Pseudomonas sp. Journal of Bioprocessing and Biotechniques 4 (6):1000178.
  • P. Bhaskar, S.N. Gummadi (2014) Bioconversion of non-detoxified hemicellulose hydrolysates to xylitol by halotolerant yeast Debaryomyces nepalensis NCYC 3413, Journal of Microbial and Biochemical Technology 6: 327-333.
  • Rajesh Kanna, S.N. Gummadi and G. Suresh Kumar (2014) Production and characterization of Pseudomonas putida MTCC 2467, Journal of Biological Sciences, 14: 436-445.
  • V.G. Francis, P. Purnima and S.N. Gummadi (2014) Snail interacts with hPLSCR1 promoter and down regulates its expression in IMR-32, Biochemical and Biophysical Research Communications, 450: 172-177.
  • A. Nagarajan, N. Thirunavukkarasu, T. S. Suryanarayanan and S.N. Gummadi (2014) Screening and isolation of novel glutaminase free L-asparaginase from fungal endophytes, Research Journal of Microbiology, 9:163-176.
  • S. Rayala, V.G. Francis, U. Sivagnanam, S.N. Gummadi (2014) N-terminal proline rich domain is required for scrambling activity of human phospholipid scramblases, Journal of Biological Chemistry, 289: 13206-13218.
  • A. Rajasekharan, V.G. Francis, S.N. Gummadi (2013) Biochemical evidence for energy-independent flippase activity in bovine epididymal sperm membranes: an insight into membrane biogenesis, Reproduction, 146: 209-220.
  • A.K. Shettihalli, S.N. Gummadi (2013) Biochemical evidence for lead and mercury induced transbilayer movement of phospholipids mediated by human phospholipid scramblase 1, Chemical Research in Toxicology 26: 918-925.
  • V.G. Francis, A. Majeed, A. Gopala Krishna, S.N. Gummadi(2013) The single C-terminal helix of human phospholipid scramblase is required for membrane insertion and scrambling activity, FEBS Journal, 280: 2855-2869.
  • K. HimaBindu, N. Shweta, S.N. Gummadi (2013) Production of ethanol and arabitol by Debaryomyces nepalensis: influence of process parameters, AMB express 3:23.
  • K. HimaBindu, N. Shweta, S.N. Gummadi (2012) A statistical approach to optimize xylitol production by Debaryomyces nepalensisinvitro, Food and Nutritional Science 3: 1027-1036.
  • V.G. Francis, S.N. Gummadi (2012) Biochemical and functional characterization of human phospholipid scramblase 4 (hPLSCR4), Biological Chemistry, 10:1173-1181.
  • T.K. Gayatri, M. Doble, S.N. Gummadi (2012) Production and downstream processing of (13)--D-glucan strain from mutant strain of Agrobacterium sp. ATCC 31750, Applied Microbiology and Biotechnology Express, 2: 31
  • V.G. Francis, A. Majeed, S.N. Gummadi(2012) Recovery of functionally active recombinant human phospholipid scramblase 1 from inclusion bodies using N-Lauroyl Sarcosine, Journal of Industrial Microbiology and Biotechnology , 39: 1041-1048.
  • A. Rajasekharan, S.N. Gummadi(2012) Inhibition of biogenic membrane flippase activity in reconstituted ER proteoliposomes in the presence of low cholesterol levels, Cellular and molecular Biology Letters 17:136-152.
  • A. Rajasekharan, S.N. Gummadi(2011) Flip-flop of phospholipids in proteoliposomes reconstituted from detergent extract of intact chloroplast: kinetics and phospholipid specificity, PLos one 6(12): e28401. Doi: 10.1371 / journal.pone.0028401
  • T. Kaliaperumal, S.N. Gummadi, A. Chadha (2011) Synthesis of both enantiomers of ethyl-4-chloro-3-hydroxbutanoate from the prochiral ketone using Candida parapsilosis ATCC 7330, Tetrahedron: Asymmetry 22: 1548-1552
  • T. Kaliaperumal, S.N. Gummadi, A. Chadha (2011) Candida parapsilosis ATCC 7330 can also deracemise 1-arylethanols, Biocatalysis and Biotransformation 29:262-270.
  • Sawan Kumar, S.N. Gummadi (2011) Purification and characterization of a moderately halotolerant NADPH dependent xylose reductase from Debaryomyces nepalensis NCYC 3413, Bioresource Technology 102: 9710-9717.
  • N. Thirunavukkarasu, T.S. Suryanarayanan, T.S Murali, J.P. Ravishankar and S.N. Gummadi (2011) L-asparaginase from marine derived fungal endophytes of seaweeds, Mycosphere online-Journal of Fungal Biology 2:1-9.
  • B. Bhavya, S.N. Gummadi (2011) Enhanced degradation of caffeine and caffeine demethylase production by Pseudomonas sp. in bioreactors under fed-batch mode, Applied Microbiology and Biotechnology 91:1007-1017.
  • Pradeep Lal, Sawan Kumar, S.N. Gummadi (2011) Use of response surface methodology to study the combined effect of salt, pH and temperature on the growth of food spoiling yeast Debaryomyces nepalensis NCYC 3413, Food and Bioprocess Technology 4: 723-730.
  • Sawan Kumar, S.N. Gummadi (2011) Metabolism of glucose and xylose as single and mixed feed in Debaryomyces nepalensis NCYC 3413: production of industrially important metabolites, Applied Microbiology and Biotechnology 89: 1405-1415.
  • Sawan Kumar,G.T. Kalyanasundaram, S.N. Gummadi(2011)Differential response of catalase, superoxide dismutase and glycerol-3-phosphate dehydrogenase to different environmental stresses in Debaryomyces nepalensis NCYC 3413, Current Microbiology 62: 382-387.
  • S.N. Gummadi, S. Devarai (2010) Kinetics of growth and caffeine demethylase production by Pseudomonas sp. in bioreactor, Journal of Industrial Microbiology & Biotechnology 37: 901-908.
  • T. Kaliaperumal, S. Kumar, S.N. Gummadi, A. Chadha (2010) Asymmetric synthesis of (S)-ethyl-4-chloro-3-hydroxybutanoate using Candida parapsilosis ATCC 7330, Journal of Industrial Microbiology and Biotechnology 37: 159-165.
  • P. Sri Lakshmi, S. Handa, S.N. Gummadi and M. Doble (2010) Enhancement and scale-up of β-1,3-curdlan production by Agrobacterium sp., International Journal of Food Engineering 6: article 6, 10.2202/1556-3758.1736.
  • Sawan Kumar, S.N. Gummadi (2009) Osmotic adaptation in halotolerant yeast, Debaryomyces nepalensis NCYC 3413: role of osmolytes and cation transport, Extremophiles 1: 793-805.
  • S.K. Sahu, A. Rajasekharan, S.N. Gummadi (2009) GroES and GroEL are essential chaperones for refolding of recombinant human phospholipid scramblase 1 in E. coli, Biotechnology Letters 31:1745-1752.
  • S.K. Sahu, G.K. Aradhyam, S.N. Gummadi (2009) Calcium binding studies of peptides of human phospholipid scramblases 1 to 4 suggest that scramblases are new class of calcium binding proteins in the cell, Biochemical BiophysicaActa 1790: 1274-1281.
  • S.N. Gummadi, S.S. Dash, S. Devarai (2009) Optimization of caffeine demethylase production by Pseudomonas sp. in bioreactors, Journal of Industrial Microbiology and Biotechnology 36: 713-720.
  • S.N. Gummadi, K.B. Ganesh, S. Devarai (2009) Enhanced degradation of caffeine by immobilized cells of Pseudomonas sp. in agar-agar matrix using statistical approach, Biochemical Engineering Journal 44: 136-141.
  • K. Bakshy, S.N. Gummadi, N. Manoj (2009) Biochemical characterization of Alr1529, a novel SGNH hydrolase variant from Anabaena sp. PCC7120, BBA Proteins and Proteomics 1794: 324-334.
  • S.K. Sahu, S.N. Gummadi (2008) Flippase activity in proteoliposomes reconstituted with Spinaceaoleracea endoplasmic reticulum membrane proteins: evidence for biogenic membrane flippase in plants, Biochemistry 47:10481-10490.
  • S. Kumar, Pradeep Lal, S.N. Gummadi (2008) Growth of halotolerant food spoiling yeast Debaryomyces nepalensis NCYC 3413 under the influence of pH and salt, Current Microbiology 57: 598-602.
  • S.K. Sahu, A. Gopalakrishna, S.N. Gummadi (2008) Over expression of recombinant human phospholipid scramblase 1 in E. coli) and its purification from inclusion bodies, Biotechnology Letters 30: 2131-2137.
  • S.N. Gummadi, S. Kumar (2008) Effect of temperature and salts on growth of halotolerant Debaryomyces nepalensis NCYC 3413, American Journal of Food Technology 3: 356-360.
  • S.S. Dash, S.N. Gummadi (2008) Inducible nature of the enzymes involved in catabolism of caffeine and related methylxanthines by Pseudomonas sp., Journal of Basic Microbiology, 49:227-233.
  • S.S. Dash, S.N. Gummadi (2008) Inhibitory effect of caffeine on growth of various bacterial strains, Research Journal of Microbiology 3: 457-465.
  • S.N. Gummadi, D.S. Kumar (2008) Batch and fed batch production of pectin lyase and pectate lyase by novel strain Debaryomyces nepalensis in bioreactor, Bioresource Technology,99: 874-881.
  • S.S. Dash, S.N. Gummadi (2008) Chemotaxis of Pseudomonas sp. to caffeine and related methylxanthines, Journal of Basic Microbiology 48:130-134.
  • S.N. Gummadi, S. Kumar, C.N.A. Aneesh (2007) Effect of salts on growth and pectinases production by halotolerant yeast, Debaryomyces nepalensis NCYC 3413, Current Microbiology, 54: 472-476.
  • S.S. Dash, S.N. Gummadi(2007)Degradation kinetics of caffeine and related methylxanthines by induced cells of Pseudomonas sp., Current Microbiology, 55: 56-60.
  • T.N. Padma Sree, S. Krishna Kumar, A. Senthilkumar, A. Gopala Krishna, S.N. Gummadi(2007) In vitro effect of Terminalia arjuna bark extract on antioxidant enzyme catalase, Journal of Pharmacology and Toxicology, 2: 698-708.
  • S.N. Gummadi, C. Lionel, S.S. Dash, S. Gokulakrishnan (2007) The effect of glucose on growth and caffeine degradation by Pseudomonas sp. NCIM 5235, Research journal of Microbiology, 2: 327-336.
  • S. Gokulakrishnan, K. Chandraraj, S.N. Gummadi (2007) A preliminary study of caffeine degradation by Pseudomonas sp. GSC 1182, International Journal of Food Microbiology, 113: 346-350.
  • S.S. Dash, S.N. Gummadi (2007) Enhanced biodegradation of caffeine by Pseudomonas sp. using response surface methodology, Biochemical Engineering Journal, 36: 288-293.
  • S.S. Dash, S.N. Gummadi (2007) Optimization of physical parameters for biodegradation of caffeine by Pseudomonas sp.: a statistical approach, American Journal of Food Technology, 2: 21-29.
  • S.N. Gummadi, S. Devarai (2006) How induced cells of Pseudomonas sp. increase the degradation of caffeine, Central European Journal of Biology, 4: 561-571.
  • S.N. Gummadi, D.S. Kumar (2006) The effect of microbiological parameters on production of pectin lyase and pectate lyase by Debaryomyces nepalensis: a statistical approach, Research Journal of Microbiology, 1: 220-227.
  • S.N. Gummadi, D.S. Kumar (2006) Optimization of chemical and physical parameters affecting the activity of pectin lyase and pectate lyase from Debaryomyces nepalensis: a statistical approach, Biochemical Engineering Journal, 30: 130-137.
  • S. Gokulakrishnan, S.N. Gummadi (2006) Kinetics of cell growth and caffeine utilization by Pseudomonas sp. GSC 1182, Process Biochemistry, 41: 1417-1421.
  • S.N. Gummadi, D.S. Kumar (2006) Pectin lyase and pectate lyase from Debaryomyces nepalensis isolated from apple, Research Journal of Microbiology, 1: 152-159.
  • S.N. Gummadi, D.S. Kumar (2006) Enhanced production of pectin lyase and pectate lyase by Debaryomyces nepalensis in submerged fermentation by statistical methods, American Journal of Food Technology, 1: 19-33.
  • S.S. Dash, S.N. Gummadi (2006) Biodegradation of caffeine by Pseudomonas sp. NCIM 5235, Research Journal of Microbiology), 1: 115-123.
  • S.N. Gummadi, Kislay Kumar (2005) Production of extracellular water insoluble -1,3-glucan (curdlan) from Bacillus sp. SNC07, Biotechnology and Bioprocess Engineering, 10, 546-551.
  • M. Agrawal, S. Pradeep, K. Chandraraj, S.N. Gummadi(2005) Hydrolysis of starch by amylase from Bacillus sp. KCA 102: a statistical approach, Process Biochemistry, 40, 2499-2507.
  • Q-L. Chang, S.N.Gummadi,A.K.Menon (2004) Chemical modification identifies two populations of glycerophospholipidflippase in rat liver ER, Biochemistry, 43, 10710-10718.
  • G.S.N. Naidu and T. Panda (2003) Studies on pH and thermal deactivation of pectolytic enzymes from Aspergillus niger. Biochemical Engineering Journal, 16, 57-67.
  • R. Muralidhar, S.N. Gummadi, V. VenkataDasu and T. Panda (2003) Statistical analysis on some critical parameters affecting the formation of protoplasts from the mycelium of Penicilliumgriseofulvum. Biochemical Engineering Journal, 16, 229-235.
  • D.S. Rana, K. Thèodore, G.S.N. Naidu and T. Panda (2003) Stability and kinetics of -1,3-glucanse from Trichoderma harzianum. Process Biochemistry, 39, 149-155.
  • S.N. Gummadi, T. Panda (2003) Analysis of kinetic data of pectinases with substrate inhibition. Journal of Microbiology and Biotechnology, 13, 332-337.
  • S.N. Gummadiand A.K. Menon(2002)Transbilayer movement of dipalmitoylphosphatidylcholine in proteoliposomes reconstituted from detergent extracts of endoplasmic reticulum: kinetics of transbilayer transport mediated by a single flippase and identification of proteins fractions enriched in flippase activity. Journal of Biological Chemistry, 277, 25337-25343.
  • Tim Robinson, Bennett Chandran, G. Sathya Naidu and Poonam Singh (2002) Studies on the removal of dyes from a synthetic textile effluent using barley husk in static batch mode and in continuous flow packed bed reactor. Bioresource Technology, 85, 43-49.
  • G.S.N. Naidu, I.Y. Lee, O.K. Cho and Y.H. Park (2001) Conversion of (-butyrobetaine to L-carnitine by Achromobactercycloclast. Journal of Industrial Microbiology and Biotechnology, 26, 309-315.
  • G.S.N. Naidu, I.Y. Lee, E.G. Lee, G.H. Kang and Y.H. Park (2000) Microbial and Enzymatic synthesis of L-Carnitine. Bioprocess Engineering, 23, 627-635
  • T. Panda and G.S.N. Naidu (2000) Rotating simplex method of optimization of physical parameters for higher production of extracellular pectinases in bioreactor. Bioprocess Engineering, 23, 47-49.
  • G.S.N. Naidu and T. Panda (1999) Performance of pectolytic enzymes during hydrolysis of pectic substances under assay conditions: A statistical approach. Enzyme and Microbial Technology, 25, 116-124.
  • G.S.N. Naidu and T. Panda (1999) Behaviour of pectinases under process conditions. Bioprocess Engineering, 21, 397- 400.
  • T. Panda, G.S.N. Naidu and J. Sinha (1999) Multiresponse analysis of microbiological parameters affecting the production of pectolytic enzymes: a statistical view. Process Biochemistry, 35, 187-195.
  • G.S.N. Naidu and T. Panda (1998) Application of response surface methodology to evaluate some aspects on stability of pectolytic enzymes from Aspergillus niger. Biochemical Engineering Journal, 2, 71-77.


International Journals (Review Articles):

  • N.A. Azeez, S.S. Dash, S.N. Gummadi, S.D. Vijayakumar (2021) Nano-remediation of toxic heavy metal contamination: Hexavalent chromium [Cr(VI)], Chemosphere, 266: 129204. https://doi.org/10.1016/j.Chemosphere.2020.129204. Impact factor: 5.78
  • S.M. Pappu and S.N. Gummadi (2017) Second generation bioethanol production: Technical progress, possibilities and challenges. Journal of Energy and Environmental Sustainability 4: 36- 44.
  • U. Sivagnanam, S. K. Palanirajan and S.N. Gummadi (2017) The role of human phospholipid scramblases in apoptosis: An overview. BiochimBiophysActa: Molecular Cell Research 1864: 2261-2271. doi:: 10.1016/j.bbamcr.2017.08.008 Impact factor: 4.681
  • H.B. Kumdam, S.N. Murthy, S.N. Gummadi (2014) Arabitol production by microbial fermentation-biosynthesis and future applications, International Journal of Sciences & Applied Research, 1: 1-12
  • S.N. Gummadi, B. Bavya, N. Ashok (2012) Physiology, biochemistry and possible applications of microbial caffeine degradation, Applied Microbiology and Biotechnology 93:545-554
  • S.K. Sahu, N. Manoj, A. Gopalakrishna, S.N. Gummadi (2007) Phospholipid scramblases: An overview, Archives of Biochemistry and Biophysics, 462: 103-114.
  • R. Rahul, P.N. Malav, S.N. Gummadi(2007) Production of thermostable α-amylases by solid state fermentation: a review, American Journal of Food Technology, 2: 1-11.
  • S.S. Dash, S.N. Gummadi (2006) Catabolic pathways and biotechnological applications of microbial caffeine degradation, Biotechnology Letters, 28: 1993-2002.
  • S.N. Gummadi, K.S. Kumar (2005) The mystery of phospholipid flip-flop in biogenic membranes, Cellular and Molecular Biology Letters, 10, 101-121.
  • S.N. Gummadi, D.S. Kumar (2005) Microbial pectictranseliminases, Biotechnology Letters, 27, 451-458.
  • S. Gokulakrishnan, K. Chandraraj, S.N. Gummadi (2005) Microbial and enzymatic methods for the removal of caffeine, Enzyme and Microbial Technology, 37, 225-232.
  • S.N. Gummadi and T. Panda (2003) Purification and biochemical properties of microbial pectinases: a review. Process Biochemistry, 38, 987-996.
  • S.N. Gummadi (2003) What is the role of thermodynamics in protein stability? Biotechnology and Bioprocess Engineering, 8, 9-18.
  • G.S.N. Naidu and T. Panda (1998) Production of pectolytic enzymes – a review. Bioprocess Engineering, 19, 355-361.
  • T. Panda et al. (1997) Bioprocess optimization – A challenge. Journal of Microbiology and Biotechnology, 7, 367-372.
National Conference:

  • S. Malla, K.J. Jisha, Ramesh Gardas, S.N. Gummadi, Effect of ionic liquids on pH stability of xylose reductase from DebaryomycesnepalensisNCYC 3413, BESCON 2019, IIT Madras, Chennai, India, October 18-19, 2019.
  • J.S.M Pappu,S.N. Gummadi, Uniform Design Method for Optimization of Physical Parameters affecting xylitol production by D.nepalensis NCYC 3413 in batch reactors, Bioprocessing India Conference (December 17-19, 2015), IITMadras, Chennai, India.
  • Bhaskar P, S.N. Gummadi, Alteration of cofactor reference of halotolerant xylose reductase from yeast D.nepalensis, Bioprocessing India Conference (December 17-19, 2015), IIT Madras, Chennai, India.
  • U.Sivagnanam, Santosh Kumar P,SwathyRamanujam,S.N. Gummadi, Optimizing the over expression of recombinant human phospholipid scramblase1 in E.coli, Bioprocessing India Conference (December 17-19, 2015), IIT Madras, Chennai, India.
  • ArumugamNagarajan,S.N. Gummadi, Impact of agitation and release of xylose from corn cobs, Bioprocessing India Conference (December 17-19, 2015), IIT Madras, Chennai, India.
  • N. Rao and S.N. Gummadi, Degradation of caffeine present in coffee effluent and raw tea samples using Pseudomonas sp. NCIM 5235, Pollution Control: Chemical & Biological Techniques, Guntur, Andhra Pradesh, Mar 26-27 2012.
  • A.K. Shettihalli and S.N. Gummadi, Biochemical & biophysical characterization of heavy metal binding properties of human phospholipid scramblase 1, Annual Meeting of the Indian Biophysical Society, Chennai, India, Jan 19-21 2012.
  • V.G. Francis and S.N. Gummadi, Biochemical characterization of human phospholipid scramblase 4 (hPLSCR4) , Annual Meeting of the Indian Biophysical Society, Chennai, India, Jan 19- 2012.
  • A. Rajasekharan and S.N. Gummadi, Localisation and characterization of plant biogenic membrane flippases, Annual Meeting of the Indian Biophysical Society, Chennai, India, Jan 19-21 2012.
  • S.K. Sahu. S.N. Gummadi and G.K. Aradhyam, Probing the microenvironment of Ca2+ binding in human phospholipid scramblases, 77th Annual Conference of Society of Biological Chemists, IIT Madras, Chennai, December 2008.
  • A. Senthilkumar, T.N. Padmasree, A. Gopala Krishna and S.N. Gummadi, In vitro studies on Terminalia arjuna bark extract: Its effect on antioxidant enzyme catalase, Joint Annual Meeting of The International Society of Heart Research (Indian Section), International Academy of Cardiovascular Sciences (Indian Chapter) & Heart Failure Society, Postgraduate Institute of Medical Education and Research (PGIMER) Chandigarh, India, 29 Feb - 2 Mar 2008.
  • S. Kumar, N.A. Aneesh Chandran, S.N. Gummadi, Effects of high salt concentration on growth of Debaryomyces nepalensis. In Conference on Microbiology: The challenges ahead. Abstracts of 47th Annual conference of Association of Microbiologists of India, Bhopal, December 2006 .
  • S. Gowri, S.N. Gummadi and M. Doble, Screening of novel strain for production of curdlan. In Conference on Microbiology: The challenges ahead. Abstrats of 47th Annual conference of Association of Microbiologists of India, Bhopal, December 2006.
  • D.S. Kumar and S.N. Gummadi, Screening and production of Microbial pectic lyases. In Biogenics-05, Abstracts of National Symposium on Recent Trends in Biotechnology, Alappuzha, Kerala, India, March 2005 (II prize for best poster presentation).
  • S. Gokulakrishnan and S.N. Gummadi, Caffeine degradation by Pseudomonas sp. isolated from coffee cultivation region. In Biogenics-05, Abstracts of National Symposium on Recent Trends in Biotechnology, Alappuzha, Kerala, India, March 2005.
  • G.S.N. Naidu and T. Panda, Stability of pectolytic enzymes. Conference on Microbes in sustainable Development. Abstracts of 38th Annual meeting of Association of Microbiologists of India), New Delhi, December 1997.

  • International Conference:

  • Susmit Chakraborty, G. Suresh Kumar and S. N. Gummadi. Numerical modeling on the influence of reservoir porosity and microbial kinetics on enhanced oil recovery by microbial flooding, SPE Europec featured at 82nd EAGE Conference and Exhibition, 2020, Amsterdam, December 8-11.
  • Susmit Chakraborty, G. Suresh Kumar and S. N. Gummadi. Numerical investigation of microbial transport in a saturated reservoir system. 8th International Groundwater Conference on Sustainable Management of Soil-Water Resources, 2019, IIT Roorkee, October 21-24.
  • A. Nagarajan A, Perarasu V.T and S.N. Gummadi. Recombinant production and characterization of Vibrio cholerae L-Asparaginase in E.coli. NHBT 2019, CSIR-NIIST & BRSI Nov 20-24,2019
  • S. Manoj Kumar and S.N. Gummadi. Heterologous overexpression and purification of N-methylxanthine demethylase B from Pseudomonas sp. NCIM 5235 in E.coliBL21, NHBT 2019, CSIR- NIIST & BRSI Nov 20-24-2019.
  • Rekha Rajesh, and S. N. Gummadi.Screening, isolation and characterization of multiple enzyme producing novel Bacillus sp from Pressmud(Sugarcane residue), NHBT 2019, CSIR- NIIST & BRSI Nov 20-24-2019.
  • Y. Mukundamala, and S. N. Gummadi. Purification and Characterization of Debaryomycesnepalensisarabitol dehydrogenase in E.coli, NHBT 2019, CSIR- NIIST & BRSI Nov 20-24- 2019.
  • Susmit Chakraborty, G. Suresh Kumar and S.N. Gummadi. Numerical Investigation of Microbial Transport in a Saturated Reservoir System, 8th IGWC 2019, IIT Roorkee Oct 21-24 2019.
  • A. Senthilkumar and S.N. Gummadi,Isolation and structural elucidation of triterpenoid glycoside from Terminalia arjuna bark extract and its invitro effects on antioxidant enzyme catalase. RACCB 2017, IIT BHU, Varanasi Feb 14-16 2017.
  • J.S.M. Pappu and S.N. Gummadi, Cybernetic modeling of xylitol production by D. nepalensis NCYC 3413 in batch reactor, The IV International Applied Mathematics, Modeling and Computational Science (AMMCS 2017), (August 20 – 25, 2017), Waterloo, Canada.
  • U. Sivagnanam and S.N. Gummadi, Studies on the Interaction of human phospholipid scramblase 1 with C-terminal domain of topoisomerase IIɑ, ASBMB Annual Meeting 2017, Chicago, USA, April 22-26, 2017.
  • S.K. Palanirajan and S.N. Gummadi, Optimizing the over expression of recombinant human phospholipid scramblase 1 in E. coli, Bioprocessing India Conference, CIAB, Mohali, Chandigarh, India, December 14-16, 2016.
  • A. Retnadhas and S.N. Gummadi, Recombinant production, purification and characterization of a novel caffeine demethylase from Pseudomonas sp., Bioprocessing India Conference, CIAB, Mohali, Chandigarh, India, December 14-16, 2016.
  • J.S.M. Pappu and S.N. Gummadi, Cybernetic modeling of xylitol production by D. nepalensis NCYC 3413 in batch bioreactors, Bioprocessing India Conference, CIAB, Mohali, Chandigarh, India, December 14-16, 2016.
  • R. Remya, A. Nagarajan and S.N. Gummadi, Recombinant production and characterization of Vibrio cholerae L- Asparaginase in E. coli, International Conference on Current Trends in Biotechnology (ICCB), VIT University, Vellore, India, December 8 - 10, 2016.
  • B. Paidimuddala, A. Rathod and S.N. Gummadi, Lignocellulose derived by-products inhibition on the activity of halotolerant xylose reductase from Debaryomyces nepalensis, ASM Microbe 2016 (June 16-20), Boston, USA.
  • S.S. Dash, A. Retnadhas, N. Rao and S.N. Gummadi, Industrial applications of caffeine degradation by Pseudomonas sp, International Conference on Advances in Chemical Engineering (ICACE) (December 20-22, 2015), NITK Surathkal, India
  • J.S.M Pappu,S.N. Gummadi, Unstructured Modelling and Optimization of Physical parameters for enhanced xylitol production by D.nepalensis in batch fermentation, International Conference on Advances in Chemical Engineering (ICACE) (December 20-22, 2015), NITK Surathkal, India.
  • A.Retnadhas, S.N. Gummadi, Industrial applications of caffeine degradation by Pseudomonas sp,International Conference on Advances in Chemical Engineering (ICACE) (December 20-22, 2015), NITK Surathkal, India.
  • Rajesh Kanna, S.N. Gummadi, G.S. Kumar, Evaluation of bio-surfactant mediated microbial enhanced oil recovery using sand packed column, International Conference on Advances in Chemical Engineering (ICACE) (December 20-22, 2015), NITK Surathkal, India.
  • A.R. Kanna, S.N. Gummadi, G.S. Kumar, Production of bio-surfactant by Bacillus subtilis and its possible application in microbial EOR, Paper ID: ICPST-KGK, Third International Conference on Petroleum Science and Technology 2014 (ICPST) (November 3-5, 2014) IIT Madras, Chennai, India.
  • A.R. Kanna, G.S. Kumar, S.N. Gummadi, Bio-surfactant production and its application on microbial EOR, Paper ID: 14FR100061, ICGPE 2014: International Conference on Geosciences and Petroleum Engineering (WASET) (October 30-31, 2014) Paris, France.
  • H. Kumdam, S.N. Gummadi, Batch production of xylitol and arabitol by Debaryomyces nepalensis NCYC 3413 in a stirred tank reactor, First International and Third National Conference on Biotechnology, Bioinformatics and Bioengineering (June 28-29, 2013) Tirupati, Andhra Pradesh, India.
  • N. Arumugam, S.N. Gummadi, Isolation and characterization of food grade glutaminase free L-asparaginase enzyme from endophytic fungi, First International and Third National Conference on Biotechnology, Bioinformatics and Bioengineering (June 28-29, 2013) Tirupati, Andhra Pradesh, India.
  • B. Gilbert, S.A. Retnadas, S.N. Gummadi, Purification and characterization of caffeine demethylase and biodegradation of caffeine by Pseudomonas putida, First International and Third National Conference on Biotechnology, Bioinformatics and Bioengineering (June 28-29, 2013) Tirupati, Andhra Pradesh, India.
  • A. Rajasekharan, S.N. Gummadi, Identification of biogenic membrane flippase in bovine sperm cells, First International and Third National Conference on Biotechnology, Bioinformatics and Bioengineering (June 28-29, 2013) Tirupati, Andhra Pradesh, India.
  • U. Sivagnanam, S.N. Gummadi, Biochemical characterization of human phospholipid scramblases interaction with topoisomerase II, First International and Third National Conference on Biotechnology, Bioinformatics and Bioengineering (June 28-29, 2013) Tirupati, Andhra Pradesh, India.
  • V.G. Francis, S.N. Gummadi, pH dependent conformation changes in human phospholipid scramblase (hPLSCR1), First International and Third National Conference on Biotechnology, Bioinformatics and Bioengineering (June 28-29, 2013) Tirupati, Andhra Pradesh, India.
  • S. Rayala, U. Sivagnanam, V.G. Francis, S.N. Gummadi, Biophysical and biological characterization of human phospholipid scramblase 2, Indian institute of Science, International conference on biomolecular forms and functions a celebration of 50 years of the Ramachandran map (January 8-11, 2013), Bangalore , India.
  • Rajesh Kanna, S.N. Gummadi, Suresh Kumar, Experimental investigations on microbial enhanced oil recovery, Petrotech 2012, 10th International oil & gas conference and exhibition (October 14 - 17, 2012), New Delhi, India.
  • A.K. Shettihalli, S.N. Gummadi, Biochemical and Biophysical characterization of heavy metal ion binding properties of human phospholipid scramblase 1: Target for toxicological implications, 48th International Conference on Medicinal Chemistry (July 4-6, 2012), Poitiers, France.
  • V.G. Francis, A. Majeed, G.K. Aradhyam and S.N. Gummadi, Overexpression, purifiacation and biochemical characaterization of Ca2+binding properties of hPLSCR1, 7th Asian Biophysics Symposium and Annual Meeting of the Indian Biophysical Society (Jan 30 - Feb 2, 2011), New Delhi, India.
  • A. Majeed, V.G. Francis, G.K. Aradhyam and S.N. Gummadi, Ca2+ binding in transmembrane deleted mutant of HPLSCR1- a spectroscopic study, 7th Asian Biophysics Symposium and Annual Meeting of the Indian Biophysical Society (Jan 30 – Feb 2, 2011), New Delhi, India.
  • T. Kaliaperumal. S.N. Gummadi, A. Chadha, Scale up for production of Candia parapsilosis ATCC 7330: An efficient biocatalyst for asymmetric synthesis, Enzymes and Biocatalysis (2010), Shanghai, China.
  • T. Kaliaperumal. S.N. Gummadi, A. Chadha, Role of dissolved oxygen during the growth of Candida parapsilosis ATCC 7330 on the asymmetric reduction of ethyl-4-chloro-e-oxobutanoate, FSES, IIT Kharagpur (2009), India.
  • A. Rajasekharan. S.N. Gummadi, Effect of cholesterol on biogenic membrane flippase activity, The Biochemical Society Annual Symposium on Recent Trends in Membrane Biochemistry (Jan 5-7, 2011), Cambridge, UK.
  • S. K. Sahu, A. Gopala Krishna, S.N. Gummadi, Increased solubility of hPLSCR1 in E. coli (BL-21) by addition of ethanol and decrease in temperature, 3rd International Congress on Bioprocesses in Food Industries and 5th Convention of the Biotech Research Society India (November 6-8, 2008), Osmania University, Hyderabad, India.
  • S. Kumar, Annie D Souza, S.N. Gummadi, Osmoregulation in food spoiling halotolerant yeast Debarymyces nepalensis NCYC 3413, 3rd International Congress on Bioprocesses in Food Industries and 5th Convention of the Biotech Research Society India (November 6-8, 2008), Osmania University, Hyderabad,India.
  • D.S. Kumar and S.N. Gummadi, Optimization of caffeine degradation by immbolised cells of Pseudomonas putida NCIM 5235 using various polymer matrices, International Conference on Biotechnology for sustainable development (7-9 January 2008), National Chemical Laboratories, Pune, India.
  • S.N. Gummadi and S. Gokulakrishnan, Microbial degradation of caffeine, Oral presentation, International Symposium on Biocatalysis and Bioprocess Engineering (16-18 Oct 2005) East China University of Science and Technology, Shanghai, China.
  • P.S. Babu, S. Rai, M. Arora, S.N. Gummadi, K. Chandraraj, Thermotolerant biocatalysts for conversion of biomass to fuel ethanol and chemicals, Oral presentation, 2nd International Ukraninan conference on Biomass for energy (20-22 Sept 2004), Kyiv, Ukraine Session 2(liquid fuels from Biomass).
  • T.V. Subramanian and G. Sathya Narayana Naidu Biodegradation of Caffeine using Immobilized Mixed Function oxidases in packed bed reactors, Third International Conference in Gas-Solid-Liquid Reactor Engineering held at Kanagawa, Japan, December 7-10, 1997.

Chapters in a book:

  • S.N. Gummadi, S. Hrafnsdóttir, J. Walnet, W.E. Watkins and A.K. Menon (2003) Reconstitution and assay of biogenic membrane-derived phospholipid flippase activity in proteoliposomes. In: Membrane protein protocols (ed. B. Selinsky), Human Press, Vol. 228, pp 271-279.
  • S.N. Gummadi, N. Manoj, D. Sunil Kumar (2006) Structural and biochemical properties of pectinases. In: Industrial Enzymes: Structure, Function and Applications (eds. J. Polaina and A.P. MacCabe, Springer, pp 99-115.
  • S.N. Gummadi, D. Sunil Kumar, S.S. Dash, S.K. Sahu (2009) Industrially important carbohydrate degrading enzymes from yeasts: Pectinases, Chitinases and β-1,4-glucanases. In: Yeast Biotechnology: Diversity and Applications (eds. T. Satyanarayana and G. Kunze), Springer, pp 673-691.
  • S.S. Dash, S.N. Gummadi (2011) Biotechnological approaches to caffeine degradation: current trends and perspectives. In: Microorganisms in sustainable agriculture and biotechnology (eds. T. Satyanarayana et al.), Springer, pp 435-452.
  • S.S. Dash, A. Retnadhas, N. Rao, S.N. Gummadi (2016) Industrial applications of caffeine degradation by Pseudomonas sp, Springer, pp
  • A.R. Kanna, S.N. Gummadi, G.S. Kumar (2016) Evaluation of bio-surfactant mediated microbial enhanced oil recovery using sand packed column, Springer pp
  • S.S. Dash, A. Retnadhas, N. Rao and S.N. Gummadi (2016) Industrial applications of caffeine degradation by Pseudomonassp, In: Biotechnology and Biochemical Engineering – Select Proceedings of ICACE 2015 (eds. Prasanna et al.), Springer, pp 171-178. ISBN-13: 978-9811019197.


Books:
  • M. Doble and S.N. Gummadi (2007) Biochemical Engineering, Prentice Hall India, New Delhi
  • V. Geetha, S.N. Gummadi and M. Doble (2012) Cyclic -glucans from microorganisms: Production, properties and applications, Springer Briefs in Microbiology, Springer
  • B.D. Prasanna, S.N. Gummadi and Praveen V. Vadlani (eds) (2016) Biotechnology and Biochemical Engineering, Selected Proceedings of ICACE 2015, Springer, Singapore.
  • R. Ravi, R. Vinu and S.N. Gummadi (eds) (2017) Coulson and Richardson’s Chemical Engineering, Vol 3A: Chemical and Biochemical Reactors and Reaction Engineering, 4th Edition, I ChemE, Elsevier, UK.

Invited Lecture:

  • Presented a webinar lecture on “Enzyme Kinetics” at SIT Tumkur, January 11, 2020.
  • Presented a webinar lecture on “Biochemical characterization of Debaryomyces nepalensis xylose reductase: potential biocatalyst for xylitol production” in AICTE-STTP Functional Metagenomics and Bioprocessing for Therapeutic Enzymes organized by Sri Venkateswara Engineering College, Chennai, January 7, 2020.
  • Presented a webinar lecture on “Understanding enzyme kinetics” at National conference on Advanced Biotechnology, Bharath Institute of Higher Education and Research, Chennai, December 10, 2020.
  • Presented a webinar lecture on “Novel purification strategies for recombinant proteins” at A 5 day online FDP on Advances in Biological, Biochemical, Biomedical and Bioenergy, National Institute of Technology Warangal, November 11, 2020.
  • Presented a webinar lecture on “Microbial and enzymatic approaches to degrade caffeine” at online faculty development program on Advances and applications of bioprocess engineering techniques, National Institute of Technology Warangal, August 26,, 2020.
  • Presented a webinar lecture on “Novel protein purification strategies in bioprocess industries, SRM Institute of Science and Technology, Chennai, June 26, 2020.
  • Presented a webinar lecture on “Bioprocess development for caffeine degradation” at Faculty Development program, Vemu Institute of Technology, Chittoor, June 16, 2020.
  • Presented an invited lecture on “Process development on xylitol production from Debaryomyces nepalensis” at National Conference in Biotechnology 2020, JNTU Hyderabad, Feb 29, 2020
  • Presented an inaugural lecture on “Biotechnology perspective” at Biotech Consortium, SRM Institute of Science and Technology on Feb 4, 2020
  • Presented an invited lecture on “Understanding the mechanisms of human Phospholipid Scramblases” in The Andhra Pradesh Science Congress on Nov 28, 2019
  • Presented an invited lecture on Recent trends in Bioprocess Technology, Products and Opportunities in TEQIP III on Sep13,2019.
  • Presented an invited lecture on “Enzyme kinetics” in Science academies refresher course on upskilling chemistry teachers on latest pedagogical tools for impactful teaching at Vignan University during Nov 27- Dec 11, 2018.
  • Presented an invited lecture on “Elusive human phospholipid scramblases”, in Andhra Pradesh Science Congress at Yogi Vemana University, Kadapa during November 9-11, 2018.
  • Presented an invited lecture on “Bioprocessing strategies for xylitol production by Debaryomyces nepalensis”, in National workshop on Bioprocessing strategies for Biofuels (BPSBF)” at SASTRA University, Thanjavur during December 11 - 16, 2017.
  • Presented an invited lecture on “Xylitol production from food spoiling yeast: Biochemical approach”, in 26th Indian Convention of Food scientists and Technologists at CSIR - Indian Institute of Chemical Technology, Hyderabad, December 7 - 9, 2017.
  • Presented an invited lecture on “Second generation production of bioethanol: Technical progress, possibilities and challenges”, in International Conference on Renewable Energy and Sustainable Environment at Dr.Mahalingam College of Engineering and Technology, Pollachi, July 20 - 22, 2017.
  • Presented an invited lecture on “Kinetics of oxygen transfer to water in aquaculture systems and evaluation of the available gadgets and scope for research”, in National workshop on Sustainable Aquaculture production Systems at National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Cochin, July 22-24, 2016.
  • Presented an invited lecture on “Novel Bioseparation processes”, in National seminar cum conference on applications of green technologies for separation of bioproducts at SreeSastha Institute of Engineering and Technology, Chennai, September 2, 2015.
  • Presented an invited lecture on “Caffeine degradation by Pseudomonas sp.”, in National seminar on Frontiers in Microbiology at Yogi Vemana University, Kadapa, March 18, 2015.
  • Presented plenary lecture on “Fermentation Techoloyg overview” in national conference on Frontiers in Biotechnology and its imminent pertinence” at Shri AndalAlagar College of Engineering, Chennai, February 28, 2015
  • Presented an invited lecture on “Enzyme Technology” at KVCET, Chennai, December 15, 2014
  • Conducted workshop on “Problem solving skills in Bioprocess engineering” in National conference and workshop on Advances in materials and advances in bioprocess engineering” at Mohandas College of Engineering and Technology, Trivandrum, December 10, 2014
  • Presented an invited lecture on “Understanding fermentation process and case study on process development for biopolymer production”, in DBT sponsored short term training course on Prospects and challenges in fermentation and downstream processing, St. Joseph Engineering college, Chennai, November 25, 2014
  • Presented an invited lecture on “Bioprocess development for caffeine degradation in food products and effluents”, in International conference on emerging trends in Biotechnology & XI Convention of BRSI, JNU, New Delhi, November 8, 2014
  • Presented an invited lecture on “Bioprocess considerations for plant cell cultures”, in National conference on plant metabolomics, Anna University, Trichy, October 16, 2014
  • Presented an invited lecture on “Optimization of bioprocess: a case study on β-1,3-glucan” in National workshop on bioprocess plant design, Sree Buddha college of Engineering, Pattoor, Kerala, November 28, 2013.
  • Presented an invited lecture on “Introduction to modeling of fermentation process” in National workshop on Modeling, Simulation and Optimization of bioprocesses, NIT Warangal, November 8, 2013.
  • Presented an invited lecture on “Bioprocess development for production of industrially important metabolites” in 7th Annual Convention of ABAP and International Conference on Plant Biotechnology, Molecular Medicine and Human Health, University of Delhi, South Campus, October 18, 2013.
  • Presented an invited lecture on “Elusive Flippases and Scramblases” in Faculty development program on emerging trends in biotechnology, Anna University, Trichy, August 24, 2013.
  • Presented an invited lecture on “Biological process for caffeine degradation in food products and effluents in International conference on green technology, SASTRA, Thanjavur, July 26, 2013.
  • Presented an invited lecture on “Industrial biotechnology for society” in Workshop on applications of chemical engineering principles in biotechnology, NIT Trichy, June 29, 2013.
  • Presented an invited lecture on “Biodegradation of caffeine” in Workshop on applications of chemical engineering principles in biotechnology, NIT Trichy, June 29, 2013.
  • Presented an invited lecture on “Bioprocess development for caffeine degradation” in Short Term Training Program (STTP) on the topic "Green Engineering Concepts for Process Design in Synthesis of Green Products", Erode, Sengunthar Engineering College, Erode, January 2013.
  • Presented an invited lecture on “Biochemical and biophysical characterization of heavy metal interaction with hPLSCR1” in International conference on Environmental effect on human health and therapeutic challenges, SV University, Tirupati, December 22, 2012.
  • Presented an invited lecture on “Bioreactors” in DBT sponsored Laboratory course on Immuno and Enzyme Techniques at Department of Biotechnology, Vignan University, Guntur, November 26, 2012.
  • Presented an invited lecture on “Microbial degradation of caffeine” in Science Academies Lecture Workshop on "BioTechnology for Sustainable development", SV University, Tiruipati, August 30, 2012.
  • Presented an invited lecture on “Flippases and Scramblases” in Symposium on Eminent lectures on emerging biotechnology at Sree Sastha Institute of Engineering and Technology, Chennai, September 22, 2012.
  • Presented an invited lecture on “Bioprocess Engineering for global prosperity” at Workshop on A Rendezvous with Bioengineering solutions for global prosperity, St. Joseph Engineering College, Chennai, September 7, 2012.
  • Presented an invited lecture on “Fermentation Technology” in Science Academies Lecture Workshop on BioTechnology for Sustainable development, SV University, Tirupati, August 30, 2012.
  • Presented an invited lecture on “Enzyme Kinetics” at Workshop on Microbial Enzyme Technology, Pondicherry University, June 21, 2012.
  • Presented an invited lecture on “Fermentation technology: a case study on biopolymer production” at R.V.R. & J.C. College of Engineering, Guntur, November 2011.
  • Presented an invited lecture on “Elusive Biogenic membrane flippases” at National Conference on Current Achievements in Bioengineering, Bharath University, Chennai, October 19, 2011.
  • Presented series of three lectures on various topics in biotechnology for faculty and students at Vignan University, Guntur, October, 2011.
  • Presented an invited lecture on “Bioprocess development for degradation of caffeine by Pseudomonas sp.” in Biotechnology, Bioinformatics and Bioengineering, Dharmapuri, December 16, 2010.
  • Presented an invited lecture on “Bioprocess technology for biopolymer production” in Current trends in Bioprocess Technology at KL University, Vijayawada, February 12, 2010.
  • Presented a key note lecture” Biotechnology industries: Trends and perspectives” at Biotechnology-Trends and Perspectives at SPACES degree college, Tuni, December 20, 2009.
  • Presented an invited lecture on “Cell membrane biogenesis: role of phospholipid flippases” in Emerging trends in cell and nanotechnology at GITAM University, Vishakapatnam, Decemeber 11-12, 2009.
  • Presented an invited lecture on “Phospholipid Translocators and their Role in Membrane Biogenesis" at University of Hyderabad, Department of chemistry Hyderabad, November 13, 2009.
  • Presented a lecture on “Bioprocess development for caffeine degradation” at Jawaharlal Nehru Technology University, Hyderabad, March 30, 2009.
  • Presented a key note address “Elusive biogenic membrane flippases” in BIOTRENDZ-09 at Koneru Lakshmaiah Engineering College, Guntur, February 20, 2009.
  • Presented a lecture on “Biogenic membrane flippase activity in plants” in National symposium on Cellular and Molecular Biophysics at Center for Cellular and Molecular Biology, Hyderabad, January 22-24, 2009.
  • Presented an invited lecture on “The mystery of phospholipid flip-flop in biological membranes” in 3rd International Congress on Bioprocesses in Food Industries and 5th Convention of the Biotech Research Society India at Osmania University, Hyderabad, November 6-8, 2008.
  • Presented an invited lecture on “Microbial caffeine degradation: trends and perspectives” in AICTE sponsored summer school course on “Industrial Biotechnology at National Institute of Technology, Surathkal, July 23, 2008.
  • Presented an invited lecture on “Microbial fermentation technology: a case study on curdlan” in AICTE sponsored summer school course on “Industrial Biotechnology at National Institute of Technology Surathkal, July 23, 2008.
  • Presented an invited lecture on “Process development for biodegradation of caffeine” in National Seminar on Industrial Biotechnology-its scope and perspectives at P.G. Department of Biotechnology & Microbiology, J.K.C. College, Guntur, February 23, 2008.
  • Presented an invited lecture on “Bioprocess Development for Industrial applications” in International Conference on New Horizons in Biotechnology (organized by BRSI), at Trivandrum (India), November 26 – 29, 2007.
  • Presented an invited lecture on “Microbial degradation of caffeine” in the 47th Annual conference of Association of Microbiologists of India, at Bhopal (India), December 6-8,2007.
  • Presented an invited lecture on “Microbial degradation of caffeine” for UGC Refresher course on Applications of chemical engineering principles for Biotechnology at Department of Chemical Engineering A.C. College of Technology, Anna University, Nov 29, 2005.
  • Presented an invited lecture on “Fermentation Technology; a case study on biopolymer production” for UGC Refresher course on Applications of chemical engineering principles for Biotechnology at Department of Chemical Engineering A.C. College of Technology, Anna University, Nov 28, 2005.
  • Presented an invited lecture on “Phospholipid traffic in biogenic membranes” at School of Engineering and Technology, Biotechnology Department, Bharathidasan University, Trichy, September 10, 2005.
  • Presented an invited lecture on “Fermentation Technology” at IC&SR, IIT-Madras for Continuing Education Program on Recent trends in bioprocess technology, July 4-6, 2005.
  • Presented a Plenary Lecture on “Mystery of flippases” at National Symposium on Recent Trends in Biotechnology. Alappuzha, Kerala, India, March 9-10, 2005.
  • Presented a lecture on “Flippases” at Department of Biotechnology, Satyabama Deemed University, Chennai, March 07, 2005.
  • Presented an invited lecture on “Analytical techniques in Biotechnology” at RSIC, IIT Madras for UGC Refresher course on Analytical Instrumentation, Jan 17-28, 2003.
  • Presented an invited lecture on “Unsolved mystery of phospholipid flip-flop in biogenic membranes” at Department of Chemical Engineering, IIT-Kanpur, April 01, 2002.