Publications by authors named "Sk Riyazat Khadim"
Dunaliella salina is a favourable source of high lipid feedstock for biofuel and medicinal chemicals. Low biomass output from microalgae is a significant barrier to industrial-scale commercialisation. The current study aimed to determine how photosynthetic efficiency, carbon fixation, macromolecular synthesis, accumulation of neutral lipids, and antioxidative defence (ROS scavenging enzyme activities) of D.
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- Selenium is an essential nutrient for living organisms, but it can be toxic in high concentrations; this study investigated its effects on the growth and accumulation in Dunaliella salina cells.
- The optimal selenium concentration for growth was found to be 50 mg/L, where the cells demonstrated normal growth and accumulated a moderate amount of selenium, while higher concentrations led to photosynthetic stress and damage.
- The study suggests that the selenium-enriched biomass from the 50 mg/L exposure could be used for bio-fortifying food and feed due to its health benefits.
The present study was aimed at understanding the effects of heat stress on selected physiological and biochemical parameters of a model cyanobacterium, Anabaena PCC 7120 in addition to amelioration strategy using exogenous Ca. A comparison of the cells exposed to heat stress (0-24 h) in the presence or absence of Ca clearly showed reduction in colony-forming ability and increase in reactive oxygen species (ROS) leading to loss in the viability of cells of Ca-deficient cultures. There was higher level of saturation in membrane lipids of the cells supplemented with Ca along with higher accumulation of proline.
View Article and Find Full Text PDFMass cultivation of Dunaliella salina was standardized in a flat plate photobioreactor followed by a vertical flat plate photobioreactor. Maximum biomass productivity (14.95 ± 0.
View Article and Find Full Text PDFThe synthesis of silver nanoparticles (AgNPs) via green route, using biological entities is an area of interest, because one of the potential applications in the nanomedicine. In the present study, we have developed photo-induced, ecofriendly, low cost method for biosynthesis of the stable silver nanoparticles using aqueous extract of Dunaliella salina (AED) which act as both reducing as well as stabilizing agent. Biosynthesis of the AgNPs was optimized as: sunlight exposure (30min), AED (5% (v/v)) and AgNO (4mM).
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