Lectures
1. Presented an invited lecture on "Fermentation Technology" at ICSR, IIT Madras for Continuing Education Program on Recent Trends in bioprocess technology, July 4-6, 2005.
2. Presented a Plenary Lecture on "Mystery of flippases" at National Symposium on Recent Trends in Biotechnology, Alappuzha, Kerala, India, March 9-10, 2005.
3. Presented a lecture on "Flippases" at Department of Biotechnology, Satyabama Deemed University, Chennai, March 07, 2005.
4. Presented a lecture on "Analytical techniques in Biotechnology" ar RSIC, IIT Madras for UGC Refresher course on Analytical Instrumentation, Jan 17-28, 2003.
5. Presented a lecture on "Unsolved mystery of phospholipid flip-flop in biogenic membranes" at Department of Chemical Engineering, IIT-Kanpur, April 01, 2002.
National Conference
1. 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.
2. D.S Kumar and S.N. Gummadi. Screening and production of Microbial pectic lyases. Abstracts of National Symposium on Recent Trends in Biotechnology, Biogenics-05, Alappuzha, Kerala, India, March 2005.
3. S. Gokulakrishnan and S.N.Gummadi. Caffeine degradation by Pseudomonas sp. isolated from coffee cultivation region. Abstracts of National Symposium on Recent Trends in Biotechnology, Biogenics-05, Alappuzha, Kerala, India, March 2005.
International Conference
1. T.V. Subramanian and G. Sathya Narayana Nadiu. "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.
2. P.S. Babu, S. Rai, M. Arora, S.N. Gummadi, K. Chandraraj. "Thermotolerant biocatalysts for conversion of biomass to fuel ethanol and chemicals", Proceeding of 2nd International Ukraninan conference on Biomass for energy (20-22 Sept 2004), Kyiv, Ukraine Session 2 (liquid fuels from Biomass).