TY - JOUR
T1 - Achieving high lipid productivity of a thermotolerant microalga Desmodesmus sp. F2 by optimizing environmental factors and nutrient conditions
AU - Ho, Shih Hsin
AU - Chang, Jo Shu
AU - Lai, Yen Ying
AU - Chen, Ching Nen Nathan
N1 - Funding Information:
This work was financially supported in part by grants NSC98-2311-B-110-002-MY2 , NSC101-3113-P-110-003 and NSC102-3113-P-006-016 from the National Science Council Taiwan . This work was also supported by The Top University grants (also known as the “5-year-50-billion” grant) from the Ministry of Education, Taiwan, and Dongsha Atoll Research Station.
PY - 2014/3
Y1 - 2014/3
N2 - The optimal conditions for cultivating the thermotolerant lipid-rich microalga Desmodesmus sp. F2 to achieve maximal lipid productivity were determined in this study. The conditions were light intensity, 700μmol/m2s; temperature, 35°C; cultivation nitrogen source, nitrate; initial nitrogen level, 6.6mM nitrogen. Carbon dioxide (2.5%, 0.2 vvm) was pumped into the cultures continuously. In the pre-optimized conditions, the maximal lipid productivity of this microalga was 113mg/L/d, which was raised to 263mg/L/d in the optimized conditions. This level of lipid productivity of microalgae is the highest ever reported in the literature. Fatty acid composition of the lipid produced by Desmodesmus sp. F2 in the optimal conditions was determined, in which C16 and C18 species accounted for 95% of the fatty acids. Saturated, monounsaturated and polyunsaturated fatty acids accounted for 38.9%, 33.1% and 22.6%, respectively. Based on the analysis, this lipid quality makes it a good feedstock for biodiesel production.
AB - The optimal conditions for cultivating the thermotolerant lipid-rich microalga Desmodesmus sp. F2 to achieve maximal lipid productivity were determined in this study. The conditions were light intensity, 700μmol/m2s; temperature, 35°C; cultivation nitrogen source, nitrate; initial nitrogen level, 6.6mM nitrogen. Carbon dioxide (2.5%, 0.2 vvm) was pumped into the cultures continuously. In the pre-optimized conditions, the maximal lipid productivity of this microalga was 113mg/L/d, which was raised to 263mg/L/d in the optimized conditions. This level of lipid productivity of microalgae is the highest ever reported in the literature. Fatty acid composition of the lipid produced by Desmodesmus sp. F2 in the optimal conditions was determined, in which C16 and C18 species accounted for 95% of the fatty acids. Saturated, monounsaturated and polyunsaturated fatty acids accounted for 38.9%, 33.1% and 22.6%, respectively. Based on the analysis, this lipid quality makes it a good feedstock for biodiesel production.
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U2 - 10.1016/j.biortech.2014.01.017
DO - 10.1016/j.biortech.2014.01.017
M3 - Article
C2 - 24491294
AN - SCOPUS:84893387621
SN - 0960-8524
VL - 156
SP - 108
EP - 116
JO - Agricultural Wastes
JF - Agricultural Wastes
ER -