Publications by authors named "S Ramakumar"
A novel approach for in situ transesterification, extraction, separation, and purification of fatty acid ethyl esters (FAEE) for biodiesel and docosahexaenoic acid (DHA) from Thraustochytrid biomass has been developed. The downstream processing of Thraustochytrids oil necessitates optimization, considering the higher content of polyunsaturated fatty acids (PUFA). While two-step methods are commonly employed for extracting and transesterifying oil from oleaginous microbes, this may result in oxidation/epoxidation of omega-3 oil due to prolonged exposure to heat and oxygen.
View Article and Find Full Text PDFMycobacterium tuberculosis has evolved several mechanisms to counter host defense arsenals for its proliferation. Here we report that M. tuberculosis employs a multi-pronged approach to modify host epigenetic machinery for its survival.
View Article and Find Full Text PDFThe study focuses on the simultaneous improvement of biomass, lipid, and docosahexaenoic acid (DHA) productivities in a single reactor using modulator control strategies. The efficacy of three different biochemical modulators, sesamol (Ses), 6-benzylaminopurine (6-BAP), and ethylenediaminetetraacetic acid (EDTA), as potential stimulants in augmenting the biomass, lipid, and DHA production of Schizochytrium sp. MTCC 5890 was elucidated.
View Article and Find Full Text PDFIn this study, calcium peroxide was modified and doped with metal-based nanoparticles (NP) to enhance the efficiency of pretreatment and biohydrogen generation from RS. The findings revealed that the addition of MnO-CaO NPs (at a dosage of 0.02 g/g TS of RS) had a synergistic effect on the breakdown of biomass and the production of biohydrogen.
View Article and Find Full Text PDFArticle Synopsis
- There is a growing need for effective methods to recycle plastic waste, focusing on enhancing the quality of resulting products.
- The study investigates the impact of various catalysts on the production of pyrolysis oil from polyolefin waste types, including HDPE, LLDPE, and PP, through thermal and catalytic pyrolysis techniques.
- Results indicate that using catalysts can lower pyrolysis temperatures and improve liquid yields, with polypropylene showing the highest yield of 70.0% using activated alumina at 450 °C, while maintaining low sulfur and chloride levels in the resultant liquid products.