Sathyanarayana N Gummadi

Professor
Ph.D, Indian Institute of Technology Madras
M.Tech, Anna University
Office: BT 205
Tel: +91-44-2257-4114
Email: gummadi@iitm·ac·in
Lab: BT 208 (Website)

Research Interests

  • Understanding the molecular and physiological basis of survival of microbes under extreme conditions and exploiting their industrial importance
  • Understanding the molecular and biochemical basis of phospholipid translocation in cellular membranes
  1. International Journals:
        1. 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
        2. 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
        3. 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
        4. 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
        5. 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
        6. 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
        7. 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,
        8. 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
        9. 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
        10. K. Jagadeeshwar, V. Gayathri, Abhijit P. Deshpande and S.N. Gummadi (2020) Molecular association and gelling characteristics of curdlan. Current Science, 118: 1436-1442.
        11. 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
        12. 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
        13.  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
        14. 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
        15. 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
        16. 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
        17. 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.
        18. 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
        19. 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
        20. 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
        21. 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
        22.  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
        23.  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
        24. 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
        25. 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
        26. 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
        27. 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.
        28. 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.
        29. 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
        30. 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
        31. 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.
        32. 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.
        33.  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
        34. 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.
        35. 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.
        36. 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.
        37. 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
        38. 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.
        39. 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.
        40. 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.
        41. 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
        42. S.M. Pappu and S.N. Gummadi(2016) Multi response optimization for enhanced xylitol production by Debaryomycesnepalensisin bioreactor, 3 Biotech6: 151. doi: 10.1007/s13205-016-0467-x.Impact factor:1.497.
        43. M. Vinnakota and S.N. Gummadi(2016)Snail represses the expression of human phospholipid scramblase 4 gene, Gene 591:433-441. doi: 10.1016/j.gene.2016.06.050. Impact Factor:2.319.
        44.  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 38:1519-25. doi: 10.1007/s10529-016-2122-3.Impact Factor: 1.846.
        45. 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.
          doi:10.1016/j.jbiotec.2016.03.055.Impact Factor: 2.667.
        46. 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.
          https://doi.org/10.1186/s12858-016-0067-8. Impact factor: 1.481.
        47. P. Sivasankar, A.R. Kanna, G.S. Kumar and S.N. Gummadi (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.
          doi: 10.1016/j.biortech.2016.03.119.Impact factor: 5.807.
        48. 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. https://doi.org/10.1016/j.bcab.2016.02.007. Impact factor:0.887.
        49.  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 Communications 469: 412-417.
          doi: 10.1016/j.bbrc.2015.11.131. Impact factor:2.466.
        50. S.M. Pappu, T. Basak and S.N. Gummadi(2015) Mathematical modeling of macroscale phenomena: Oxygen transfer for solid state fermentation in static tray bioreaction, British Biotechnology Journal 9: 1-14.
          doi: 10.9734/BBJ/2015/20476.
        51. A. Seenivasan, S.N.Gummadi, T.Panda and T. Theodore (2015) Quantification of Lovastatin by Monascuspurpureus, The Open Biotechnology Journal 9: 6-13.
        52. V.G. Francis and S.N.Gummadi (2015) Biochemical evidence for Ca2+ independent functional activation of hPLSCR1 at acidic pH, Cellular and Molecular Biology Letters 20: 177-195. doi: https://doi.org/10.1515/cmble-2015-0017. Impact Factor: 1.29.
        53. H.B. Kumdam and S.N. Gummadi (2015) Effect of kLa and fed-batch strategies for enhanced production of xylitol by Debaryomycesnepalensis NCYC 3413, British Biotechnology Journal 5: 24-36. doi: 10.9734/BBJ/2015/14273.
        54. A. Retnadas and 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. doi: 10.4172/2155-9821.1000178. Impact factor:0.56.
        55. B. Paidimuddala and S.N. Gummadi (2014) Bioconversion of non-detoxified hemicellulose hydrolysates to xylitol by halotolerant yeast Debaryomycesnepalensis NCYC 3413, Journal of Microbial and Biochemical Technology 6: 327-333.
          doi: 10.4172/1948-5948.1000163. Impact factor:3.15.
        56. A.R. Kanna, G. Suresh Kumar and S.N. Gummadi (2014) Bio-surfactant production and its application in microbial EOR, International Journal of Biological, Veterinary, Agricultural and Food Engineering – World Academy of Science, Engineering and Technology 8: 1014-1018.
        57. A.R. Kanna, S.N. Gummadi and G. Suresh Kumar (2014) Production and characterization of Pseudomonas putida MTCC 2467, Journal of Biological Sciences 14: 436-445.
          doi: 10.3923/jbs.2014.436.445.Impact factor: 3.873.
        58. V.G. Francis, P. Padmanabhan 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.
          doi: 10.1016/j.bbrc.2014.05.094. Impact Factor:2.466.
        59. 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.
          doi: 10.3923/jm.2014.163.176.
        60. S. Rayala, V.G. Francis, U. Sivagnanam and S.N. Gummadi (2014) N-terminal proline rich domain is required for scrambling activity of human phospholipid scramblases, The Journal of Biological Chemistry 289: 13206-13218. doi: 10.1074/jbc.M113.522953. Impact factor:4.125.
        61. A. Rajasekharan, V.G. Francis and 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.
          doi: 10.1530/REP-13-0121. Impact factor:3.086.
        62. A.K. Shettihalli and 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.
          doi: 10.1021/tx400090h. Impact factor: 3.278.
        63. V.G. Francis, A. Majeed, G.K. Aradhyam and S.N. Gummadi (2013) The single C-terminal helix of human phospholipid scramblase is required for membrane insertion and scrambling activity, Federation of European Biochemical Societies Journal 280: 2855-2869.doi:10.1111/febs.12289. Impact factor: 4.530.
        64. H.B. Kumdam, S.N. Murthy and S.N. Gummadi (2013) Production of ethanol and arabitol by Debaryomycesnepalensis: influence of process parameters, Applied Microbiology and Biotechnology express 3:23.
          doi:10.1186/2191-0855-3-23. Impact factor: 3.340.
        65. H.B. Kumdam, S.N. Murthy and S.N. Gummadi (2012) A statistical approach to optimize xylitol production by Debaryomycesnepalensisin vitro, Food and Nutritional Science 3: 1027-1036.
          doi:10.4236/fns.2012.38136. Impact Factor: 1.202.
        66. V.G. Francis and S.N. Gummadi (2012) Biochemical and functional characterization of human phospholipid scramblase 4 (hPLSCR4), Biological Chemistry 10: 1173-1181.
          doi:10.1515/hsz-2012-0129. Impact factor: 4.125.
        67. G.T. Kalyanasundaram, M. Doble and S.N. Gummadi (2012) Production and downstream processing of (1,3)-b-D-glucan strain from mutant strain of Agrobacterium sp. ATCC 31750, Applied Microbiology and Biotechnology Express, 2: 31.
          doi:10.1186/2191-0855-2-31.Impact factor: 3.34.
        68. V.G. Francis, A. Majeed and 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.
          doi: 10.1007/s10295-012-1105-1. Impact factor: 3.103.
        69. A. Rajasekharan and 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.
          doi: 10.2478/s11658-011-0042-8. Impact factor: 1.291.
        70. A. Rajasekharan and 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. https://doi.org/10.1371/journal.pone.0028401. Impact factor: 2.766.
        71. T. Kaliaperumal, S.N. Gummadi and 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. https://doi.org/10.1016/j.tetasy.2011.08.009. Impact factor: 0.604.
        72. T. Kaliaperumal, S.N.Gummadi and A. Chadha (2011) Candida parapsilosis ATCC 7330 can also deracemise 1-arylethanols, Biocatalysis and Biotransformation 29: 262-270. https://doi.org/10.3109/10242422.2011.615925. Impact Factor:0.91.
        73. S. Kumar and S.N. Gummadi (2011) Purification and characterization of a moderately halotolerant NADPH dependent xylose reductase from DebaryomycesnepalensisNCYC 3413, Bioresource Technology 102:9710-9717.doi: 10.1016/j.biortech.2011.07.030. Impact factor:5.807.
        74. 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. Impact factor:0.656
        75. B. Brundavanam and 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.
          doi: 10.1007/s00253-011-3319-y. Impact factor: 3.337.
        76. P. Lal, S. Kumar and 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 Debaryomycesnepalensis NCYC 3413, Food and Bioprocess Technology 4: 723-730.doi: 10.1007/s11947-009-0183-1.Impact factor: 2.998.
        77. S. Kumar and S.N. Gummadi (2011) Metabolism of glucose and xylose as single and mixed feed in Debaryomycesnepalensis NCYC 3413: production of industrially important metabolites, Applied Microbiology and Biotechnology 89: 1405-1415.
          doi: 10.1007/s00253-010-2997-1. Impact factor: 3.340.
        78. S. Kumar,G.T. Kalyanasundaram and S.N. Gummadi (2011)Differential response of antioxidant enzymes and glycerol-3-phosphate dehydrogenase to different environmental stresses in Debaryomycesnepalensis NCYC 3413, Current Microbiology 62: 382-387.
          doi: 10.1007/s00284-010-9717-z. Impact factor:1.373.
        79. S.N. Gummadi and S.K. Devarai (2010) Kinetics of growth and caffeine demethylase production by Pseudomonas sp. in bioreactor, Journal of Industrial Microbiology & Biotechnology 37: 901-908.
          doi: 10.1007/s10295-010-0737-2. Impact factor: 3.103.
        80. T. Kaliaperumal, S. Kumar, S.N. Gummadi and 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. doi: 10.1007/s10295-009-0657-1. Impact factor: 3.103
        81. 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.
        82. S. Kumar and S.N. Gummadi (2009) Osmotic adaptation in halotolerant yeast, Debaryomycesnepalensis NCYC 3413: role of osmolytes and cation transport, Extremophiles 1: 793-805.
          doi: 10.1007/s00792-009-0267-x. Impact factor: 2.00.
        83. S.K. Sahu, A. Rajasekharan and 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.
          doi: 10.1007/s10529-009-0073-7. Impact factor: 1.736.
        84. S.K. Sahu, G.K. Aradhyam and 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 et Biophysica Acta 1790: 1274-1281.
          https://doi.org/10.1016/j.bbagen.2009.06.008. Impact factor: 3.63.
        85. S.N. Gummadi, S.S. Dash and S.K. Devarai (2009) Optimization of caffeine demethylase production by Pseudomonas sp. in bioreactors, Journal of Industrial Microbiology and Biotechnology 36: 713-720. doi: 10.1007/s10295-009-0541-z. Impact factor: 3.103.
        86. S.N. Gummadi, K.B. Ganesh and S.K. Devarai (2009) Enhanced degradation of caffeine by immobilized cells of Pseudomonassp. in agar-agar matrix using statistical approach, Biochemical Engineering Journal 44: 136-141. doi:101016/j.bej.2008.11.010. Impact factor: 3.226.
        87. K. Bakshy, S.N.Gummadi and N. Manoj (2009) Biochemical characterization of Alr1529, a novel SGNH hydrolase variant from Anabaena sp. PCC7120, BBA Proteins and Proteomics 1794: 324-334.
          doi: 10.1016/j.bbapap.2008.10.007. Impact factor:2.609.
        88. 88. S.K. Sahu and S.N. Gummadi (2008) Flippase activity in proteoliposomes reconstituted with Spinacea oleracea endoplasmic reticulum membrane proteins: evidence for biogenic membrane flippase in plants, Biochemistry 47: 10481-10490.
          doi: 10.1021/bi8014339. Impact factor: 2.582.
        89. S. Kumar, P. Lal and S.N. Gummadi (2008) Growth of halotolerant food spoiling yeast DebaryomycesnepalensisNCYC 3413 under the influence of pH and salt, Current Microbiology 57: 598-602.
          doi: 10.1007/s00284-008-9249-y. Impact factor: 1.373.
        90. S.K. Sahu, G.K. Aradhyam and S.N. Gummadi (2008) Overexpression of recombinant human phospholipid scramblase 1 in E. coli and its purification from inclusion bodies, Biotechnology Letters 30: 2131-2137.
          doi: 10.1007/s10529-008-9797-z. Impact factor: 1.736.
        91. S.N. Gummadi and S. Kumar (2008) Effect of temperature and salts on growth of halotolerant Debaryomycesnepalensis NCYC 3413, American Journal of Food Technology 3: 356-360.
          doi: 10.3923/ajft.2008.354.360.
        92. S.S. Dash and 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.
          doi:10.1002/jobm.200800004. Impact factor: 1.395.
        93. S.S. Dash and S.N. Gummadi (2008) Inhibitory effect of caffeine on growth of various bacterial strains, Research Journal of Microbiology 3: 457-465. doi:10.3923/jm.2008.457.465.
        94. S.N. Gummadi and S. Kumar (2008) Batch and fed batch production of pectin lyase and pectate lyase by novel strain Debaryomycesnepalensis in bioreactor, Bioresource Technology 99: 874-881.
          doi:10.1016/jbiortech.2007.01.022. Impact factor: 5.807.
        95. S.S. Dash and S.N. Gummadi (2008) Chemotaxis of Pseudomonas sp. to caffeine and related methylxanthines, Journal of Basic Microbiology 48: 130-134.
          doi 10.1002/jobm.200700273. Impact factor: 1.395.
        96. S.N. Gummadi, S. Kumar and C.N.A. Aneesh (2007) Effect of salts on growth and pectinases production by halotolerant yeast, Debaryomycesnepalensis NCYC 3413, Current Microbiology 54: 472-476.
          doi:10.1007/s00284-007-0060-y. Impact factor: 1.373
        97. S.S. Dash and S.N. Gummadi(2007)Degradation kinetics of caffeine and related methylxanthines by induced cells of Pseudomonas sp., Current Microbiology 55: 56-60.
          doi:10.1007/s00284-006-0588-2. Impact factor: 1.373.
        98. T.N. Padma, S. Sree, K. Kumar, A. Senthilkumar, G.K. Aradhyam and S.N. Gummadi(2007) In vitro effect of Terminalia arjuna bark extract on antioxidant enzyme catalase, Journal of Pharmacology and Toxicology 2: 698-708.
          doi:10.3923/jpt.2007.698.708.
        99.  S.N. Gummadi, C. Lionel, S.S. Dash and S. Gokulakrishnan (2007) The effect of glucose on growth and caffeine degradation by Pseudomonas sp. NCIM 5235, Research Journal of Microbiology 2: 327-336.
          doi:10.3923/jm.2006.115.123.
        100.  S. Gokulakrishnan, K. Chandraraj and S.N.Gummadi (2007) A preliminary study of caffeine degradation by Pseudomonas sp. GSC 1182, International Journal of Food Microbiology 113: 346-350. doi:10.1016/jijfoodmicro.2006.07.005. Impact factor: 3.082.
        101. S.S. Dash and S.N. Gummadi (2007) Enhanced biodegradation of caffeine by Pseudomonas sp. using response surface methodology, Biochemical Engineering Journal 36: 288-293. https://doi.org/10.1016/j.bej.2007.03.002.Impact factor: 3.226.
        102. S.S. Dash and 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.
        103. S.N. Gummadi and S.K. Devarai (2006) How induced cells of Pseudomonas sp. increase the degradation of caffeine, Central European Journal of Biology 4: 561-571. doi:10.2478/s11535-006-0032-4. Impact factor: 0.71
        104. S.N. Gummadi and D.S. Kumar (2006) The effect of microbiological parameters on production of pectin lyase and pectate lyase by Debaryomycesnepalensis: a statistical approach, Research Journal of Microbiology 1: 220-227. doi:10.3923/jm.2006.220.227.
        105. S.N. Gummadi and D.S. Kumar (2006) Optimization of chemical and physical parameters affecting the activity of pectin lyase and pectate lyase from Debaryomycesnepalensis: a statistical approach, Biochemical Engineering Journal 30: 130-137. https://doi.org/10.1016/j.bej.2006.02.014. Impact factor: 3.226.
        106. S. Gokulakrishnan and S.N. Gummadi (2006) Kinetics of cell growth and caffeine utilization by Pseudomonas sp. GSC 1182, Process Biochemistry 41: 1417-1421. https://doi.org/10.1016/j.procbio.2005.12.018.Impact factor: 2.616.
        107. S.N. Gummadi and D.S. Kumar (2006) Pectin lyase and pectate lyase from Debaryomycesnepalensis isolated from apple, Research Journal of Microbiology 1: 152-159. doi: 10.3923/jm.2006.152.159.
        108. S.N. Gummadi and D.S. Kumar (2006) Enhanced production of pectin lyase and pectate lyase by Debaryomycesnepalensis in submerged fermentation by statistical methods, American Journal of Food Technology 1: 19-33.
        109. S.S. Dash and S.N. Gummadi (2006) Biodegradation of caffeine by Pseudomonas sp. NCIM 5235, Research Journal of Microbiology 1: 115-123.DOI: 10.3923/jm.2010.395.403.
        110. S.N. Gummadi and K. Kumar (2005) Production of extracellular water insoluble b-1,3-glucan (curdlan) from Bacillus sp. SNC07, Biotechnology and Bioprocess Engineering 10: 546-551.
        111. M. Agrawal, S. Pradeep, K. Chandraraj and S.N. Gummadi(2005) Hydrolysis of starch by amylase from Bacillus sp. KCA 102: a statistical approach, Process Biochemistry 40: 2499-2507. doi:10.1016/j.procbio.2004.10.006. Impact factor: 2.616
        112. Q.L. Chang, S.N. Gummadi and A.K. Menon (2004) Chemical modification identifies two populations of glycerophospholipid flippase in rat liver ER, Biochemistry, 43: 10710-10718. doi: 10.1021/bi049063a. Impact factor: 2.938.
        113.  S.N.Gummadiand T. Panda (2003) Studies on pH and thermal deactivation of pectolytic enzymes from Aspergillus niger, Biochemical Engineering Journal 16: 57-67. https://doi.org/10.1016/S1369-703X(03)00022-6. Impact factor: 3.226.
        114. R. Muralidhar, S.N. Gummadi, V.V. Dasu and T. Panda  (2003) Statistical analysis on some critical parameters affecting the formation of protoplasts from the mycelium of Penicillium griseofulvum, Biochemical Engineering Journal 16: 229-235. https://doi.org/10.1016/S1369-703X(03)00024-X.  Impact factor: 3.226.
        115. D.S. Rana, K.Thèodore, S.N.Gummadi and T. Panda (2003) Stability and kinetics of -1,3-glucanse from Trichoderma harzianum, Process Biochemistry 39, 149-155.
        116. S.N. Gummadi and T. Panda (2003) Analysis of kinetic data of pectinases with substrate inhibition, Journal of Microbiology and Biotechnology 13: 332-337.
        117.  S.N. Gummadi and 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. The Journal of Biological Chemistry 277: 25337-25343. doi:10.1074/jbc.M203809200. Impact factor:4.125.
        118. Robinson, B. Chandran, S.N.Gummadiand P. 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. https://doi.org/10.1016/S0960-8524(02)00070-6. Impact factor: 5.807.
        119. S.N. Gummadi, I.Y. Lee, O.K. Cho and Y.H. Park (2001) Conversion of (g-butyrobetaine to L-carnitine by Achromobactercycloclast, Journal of Industrial Microbiology and Biotechnology 26: 309-315.
        120. S.N. Gummadi, 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. doi: 10.1007/s004490000212. Impact factor: 1.278.
        121. T. Panda and S.N. Gummadi (2000) Rotating simplex method of optimization of physical parameters for higher production of extracellular pectinases in bioreactor, Bioprocess Engineering 23: 47-49.
        122. S.N.Gummadi 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. https://doi.org/10.1016/S0141-0229(99)00017-4. Impact factor: 2.287.
        123.  S.N.Gummadi and T. Panda (1999) Behaviour of pectinases under process conditions, Bioprocess Engineering 21: 397-400. doi:10.1007/s004490050693. Impact factor: 1.287.
        124. T. Panda, S.N. Gummadi and J. Sinha (1999) Multiresponse analysis of microbiological parameters affecting the production of pectolytic enzymes: a statistical view, Process Biochemistry 35: 187-195. https://doi.org/10.1016/S0032-9592(99)00050-3. Impact Factor: 2.616.
        125.  S.N. Gummadi 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. https://doi.org/10.1016/S1369-703X(98)00019-9. Impact factor: 3.226
      Review Articles

      Chapter in a book

      1. 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.
      2. 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.
      3. 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.
      4. S.S. Dash, S.N. Gummadi (2012) 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
      5. A.R. Kanna, S.N. Gummadi and G.S. Kumar (2016) Evaluation of bio-surfactant mediated microbial enhanced oil recovery using sand packed column, In: Biotechnology and Biochemical Engineering – Select Proceedings of ICACE 2015 (eds. Prasanna et al.), Springer, pp 121-128.
      6. 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.

      Book

      1. 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.
      2. B.D. Prasanna, S.N. Gummadi and Praveen V. Vadlani (eds) (2016) Biotechnology and Biochemical Engineering, Selected Proceedings of ICACE 2015, Springer, Singapore.
      3. V. Geetha, S.N. Gummadi and M. Doble (2012) Cyclic b-glucans from microorganisms: Production, properties and applications, Springer Briefs in Microbiology, Springer.
      4. M. Doble and S.N. Gummadi (2007) Biochemical Engineering, Prentice Hall India, New Delhi

      National Conference

      1. 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.
      2. J.S.M,Pappu and 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, Chennai, IIT Madras, India, December 17-19, 2015.
      3. B.Paidimuddala and S.N.Gummadi, Alteration of cofactor reference of halotolerant xylose reductase from yeast D. nepalensis, Bioprocessing India Conference, Chennai, IIT Madras, India, December 17-19, 2015
      4. 4. U.Sivagnanam, S.K. Palanirajan, S. Ramanujam and S.N.Gummadi, Optimizing the overexpression of recombinant human phospholipid scramblase1 in E. coli, Bioprocessing India Conference, Chennai, IIT Madras, India, December 17-19, 2015.
      5. A. Nagarajan and S.N. Gummadi, Impact of agitation and release of xylose from corn cobs, Bioprocessing India Conference, Chennai, IIT Madras, India, December 17-19, 2015.
      6. 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, India, March 26-27, 2012.
      7. 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, January 19-21, 2012.
      8. V.G. Francis and S.N. Gummadi, Biochemical characterization of human phospholipid scramblase 4 (hPLSCR4), Annual Meeting of the Indian Biophysical Society, Chennai, India, January 19-21, 2012.
      9. A. Rajasekharan and S.N.Gummadi, Localisation and characterization of plant biogenic membrane flippases, Annual Meeting of the Indian Biophysical Society, Chennai, India, January 19-21, 2012.
      10. S.K.Sahu. S.N.Gummadiand 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.
      11. 11. A.Senthilkumar, T.N.Padmasree, G.K. Aradhyam 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 February – 2 March, 2008.
      12. 12. S. Kumar, C.N.A. Aneesh and S.N.Gummadi, Effects of high salt concentration on growth of Debaryomycesnepalensis. In Conference on Microbiology: The challenges ahead. Abstracts of 47th Annual conference of Association of Microbiologists of India, Bhopal, December 2006.
      13. 13. S. Gowri, S.N.Gummadi and M. Doble, Screening of novel strain for production of curdlan. In Conference on Microbiology: The challenges ahead. Abstracts of 47th Annual conference of Association of Microbiologists of India, Bhopal, December 2006.
      14. 14. 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).
      15. 15. 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.
      16. 16. S.N.Gummadi 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

      1. 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.
      2. 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.
      3. 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.
      4. S. Manoj Kumar and S.N.Gummadi. Heterologous overexpression and purification of N-methylxanthine demethylase B from Pseudomonas sp. NCIM 5235 in E.coli BL21, NHBT 2019, CSIR- NIIST & BRSI Nov 20-24-2019.
      5. 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.
      6. Y. Mukundamala, and S. N. Gummadi. Purification and Characterization of Debaryomycesnepalensisarabitol dehydrogenase in E.coli, NHBT 2019, CSIR- NIIST & BRSI Nov 20-24- 2019.
      7. 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.
      8. A. Senthilkumarand 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.
      9. 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.
      10. 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.
      11. 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.
      12. 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.
      13. 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.
      14. 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.
      15. B.Paidimuddala and S.N.Gummadi, Furfural and hydroxy methylfurfural acts as a substrate of xylose reductase from Debaryomycesnepalensis, International Conference on Current Trends in Biotechnology (ICCB), VIT University, Vellore, India, December 8 – 10, 2016.
      16. S.BalaAbirami and S.N.Gummadi, Production of arabitol from yeast Zygosaccharomyces rouxii strain MTCC 2635, International Conference on Current Trends in Biotechnology (ICCB), VIT University, Vellore, India, December 8 – 10, 2016.
      17. B.Paidimuddala, A.Rathod and S.N.Gummadi, Lignocellulose derived by-products inhibition on the activity of halotolerant xylose reductase from Debaryomycesnepalensis, ASM Microbe, Boston, USA, June 16-20, 2016.
      18. S.S. Dash, A. Retnadhas, N. Rao and S.N.Gummadi, Industrial applications of caffeine degradation by Pseudomonassp, International Conference on Advances in Chemical Engineering (ICACE), NITK Surathkal, India. (II prize for best oral presentation) December 20-22, 2015.
      19. J.S.M Pappu and S.N.Gummadi, Unstructured Modelling and Optimization of Physical parameters f.or enhanced xylitol production by D. nepalensis in batch fermentation, International Conference on Advances in Chemical Engineering (ICACE), NITK Surathkal, India, December 20-22, 2015.
      20. A.R. Kanna, S.N.Gummadi and G.S. Kumar, Evaluation of bio-surfactant mediated microbial enhanced oil recovery using sand packed column, International Conference on Advances in Chemical Engineering (ICACE), NITK Surathkal, India, December 20-22, 2015.
      21. J.S.M.Pappu and 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, Chennai, IIT Madras, India, December 17-19, 2015
      22. B.Paidimuddala and S.N.Gummadi, Alteration of cofactor reference of halotolerant xylose reductase from yeast D. nepalensis, Bioprocessing India Conference, Chennai, IIT Madras, India, December 17-19, 2015.
      23. U. Sivagnanam, S.K.Palanirajan, S. Ramanujam and S.N.Gummadi, Optimizing the over expression of recombinant human phospholipid scramblase 1 in E. coli, Bioprocessing India Conference, Chennai, IIT Madras, India, December 17-19, 2015.
      24. A. Nagarajan and S.N.Gummadi, Impact of agitation and release of xylose from corn cobs, Bioprocessing India Conference, Chennai, IIT Madras, India, December 17-19, 2015.
      25. A.R. Kanna, S.N.Gummadi and 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.
      26. A.R. Kanna, G.S. Kumar and 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.
      27. 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.
      28. 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.
      29. 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.
      30. 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.
      31. 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.
      32. 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.
      33. 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.
      34. 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.
      35. 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.
      36. 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.
      37. 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.
      38. 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
      39. 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
      40. 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.
      41. 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 5thConvention of the Biotech Research Society India (November 6-8, 2008), Osmania University, Hyderabad, India.
      42. 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.
      43. D.S. Kumar and S.N. Gummadi, Optimization of caffeine degradation by immbolised cells of Pseudomonas putidaNCIM 5235 using various polymer matrices, International Conference on Biotechnology for sustainable development (7-9 January 2008), National Chemical Laboratories, Pune, India.
      44. 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.
      45. 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).
      46. 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

       Honors/Awards

      • Recipient of Fellow of the Academy of Sciences Chennai, 2021
      • Recipient of Fellow Royal Society of Chemistry, UK, 2020
      • Recipient of Y Nayudamma Memorial Award from Andhra Pradesh Akademi of Sciences, 2019
      • Recipient of Senior Scientist Award from ABAP, 2019
      • Recipient of Distinguished alumnus of NITK serving Academia, 2019
      • Recipient of Fellow of Biotechnology Research Society of India, 2018
      • Recipient of Fellow of Andhra Pradesh Akademi of Sciences, 2018
      • Recipient of Fellow of the Institution of Engineers India, 2018 (F-123707-8)
      • Recipient of Outstanding Researcher award from Venus International foundation for the year 2015
      • Recipient of Institute Research and Development award in mid-level career for the year 2015 (IIT Madras)
      • Fellow of the Association for the advancement of Biodiversity Science, 2014
      • Recipient of Talented Industrial Biotechnologist Award from Association of Biotechnology and Pharmacy, 2013
      • Recipient of NASI-Scopus Young Scientist award in the field of Biological Sciences, 2012 (Elsevier)
      • Fellow of Society for Applied Biotechnology in the field of Industrial Biotechnology, 2010
      • Recipient of Distinguished Bioengineer Award from Society for Applied Biotechnology, 2010
      • Recipient of Young Scientist award in the area of Biotechnology from Biotechnology Research Society of India, 2007
      • Recipient of Mentor Recognition Award, 2007
      • Recipient of Young Scientist Award in the area of Industrial and Food Microbiology from Association of Microbiologists of India, 2006
      • Cited in Marquis Who’s Who Asia 2006 I edition
      • Elected as Editorial Board member in Research Journal of Microbiology, Academic Journals, USA
      • Editorial Board member in Research Journal of Agriculture and Biological Sciences
      • Editorial Board member in Research Journal of Cellular and Molecular Biology
      • Awarded fellowship grant from American Heart Association for a period of two years (July 01 2002 – June 30 2004)