Abstract
The investigation for the first time assesses the efficacy of recycled de-oiled algal biomass extract (DABE) as a cultivation media to boost lipid productivity in Chlorella minutissima and its comparison with Bold’s basal media (BBM) used as control. Presence of organic carbon (3.8 ± 0.8 g/l) in recycled DABE resulted in rapid growth with twofold increase in biomass productivity as compared to BBM. These cells expressed four folds higher lipid productivity (126 ± 5.54 mg/l/d) as compared to BBM. Cells cultivated in recycled DABE showed large sized lipid droplets accumulating 54.12 % of lipid content. Decrement in carbohydrate (17.76 %) and protein content (28.12 %) with loss of photosynthetic pigments compared to BBM grown cells were also recorded. The fatty acid profiles of cells cultivated in recycled DABE revealed the dominance of C16:0 (39.66 %), C18:1 (29.41 %) and C18:0 (15.82 %), respectively. This model is self-sustained and aims at neutralizing excessive feedstock consumption by exploiting recycled de-oiled algal biomass for cultivation of microalgae, making the process cost effective.
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Acknowledgments
The authors are thankful for financial support by the Department of Biotechnology, Govt. of India for BioCare Programme, DBT Sanction No. 102/IFD/SAN/3539/2011-2012 (Grant No. DBT-608-BIO), JRF to Neha Arora (Grant No. 7001-35-44).
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Arora, N., Patel, A., Pruthi, P.A. et al. Recycled de-Oiled Algal Biomass Extract as a Feedstock for Boosting Biodiesel Production from Chlorella minutissima . Appl Biochem Biotechnol 180, 1534–1541 (2016). https://doi.org/10.1007/s12010-016-2185-6
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DOI: https://doi.org/10.1007/s12010-016-2185-6