STUDIES ON THE ENHANCEMENT OF LIPID PRODUCTION IN Chlorella pyrenoidosa
نویسنده
چکیده
Microalgae are emerging as the sustainable key source of green fuels and neutraceuticals. In the current study, a strain of Chlorella pyrenoidosa was isolated, identified and biochemically analyzed. Studies were undertaken to enhance its biomass and lipid productivities for sustainable biodiesel production. Growth was monitored in BG11, BBM, Bristol and Fogg’s medium as cell count, O.D, PCV and dry cell weight measurements. BG-11was found to be the most suitable medium. Specific growth rate was determined to be 10.64 mg/l/d in 25 days with a lipid productivity of 29.26 mg/l/d. Nitrogen stress was introduced by varying concentration of major nitrogen source in the BG-11 medium. Varied inorganic nitrogen source like urea, ammonium nitrate and ammonium sulphate had a significant effect on biomass and lipid productivities of algae. Ammonium nitrate enhanced the lipid production leading to a three fold increase in its yield. Growth rate was accelerated by 15.3 % with the supply of 5 % carbon dioxide.
منابع مشابه
Lipid Accumulation Studies In Chlorella Pyrenoidosa Using Customized Photobioreactor- Effect of Nitrogen Source, Light Intensity and Mode of Operation
Lipid productivity of Chlorella pyrenoidosa was studied in a customized laboratory scale photobioreactor. Lipid yield increased when C. pyrenoidosa was subjected to stress conditions like different nitrogen sources, light intensities and modes of cultivation. It was observed that the growth rate of C. pyrenoidosa was directly proportional to light intensity and nitrogen concentrations. Of the t...
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