Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; Institute of Engineering Thermophysics, Chongqing University, Chongqing 400044, China.
Department of Energy and Environment, National Institute of Technology, Tiruchirappalli - 620015, Tamil Nadu, India.
Bioresour Technol. 2020 May;304:123061. doi: 10.1016/j.biortech.2020.123061. Epub 2020 Feb 20.
Selection of indigenous and potential algal strain with high lipid content is paramount challenge in the avenues of microalgal biodiesel production. Particularly, hyper lipid producing algae with maximal triacyglycerols (TAGs) content and preferable fatty acid composition is of interest for sustainable biodiesel. Hence, the present study on comparative assessment of Chlorella vulgaris, Scenedesmus sp. and Synechococcus sp. was done in terms of cell density, lipid, TAGs and fatty acid. Higher biomass yield was obtained in Chlorella vulgaris (0.54 gL) on 13th day while maximal lipid content of 36% was observed in Scenedesmus sp. followed by Chlorella vulgaris (33%). Lipidomic analysis revealed higher non-polar lipids inChlorella vulgaris (57%) and Scenedesmus sp. (54%), whereas in Synechococcus sp. 69% polar lipids were present. In fatty acid profile, C24:0 (22.11%) was predominant in Chlorella vulgaris, while C20:0 (31.72%) and C18:2 (22.26%) was prevalent in Scenedesmus sp. and Synechococcus sp. respectively.
筛选具有高脂质含量的土著和潜在藻类菌株是微藻生物柴油生产途径中的主要挑战。特别是，具有最大三酰基甘油 (TAG) 含量和理想脂肪酸组成的高脂质产生藻类是可持续生物柴油的关注点。因此，本研究对普通小球藻、栅藻和聚球藻进行了比较评估，从细胞密度、脂质、TAG 和脂肪酸方面进行了研究。普通小球藻在第 13 天获得了更高的生物量产量（0.54 gL），而栅藻的最大脂质含量为 36%，其次是普通小球藻（33%）。脂质组学分析表明，普通小球藻（57%）和栅藻（54%）的非极性脂质含量较高，而聚球藻的极性脂质含量为 69%。在脂肪酸图谱中，普通小球藻中 C24:0（22.11%）占主导地位，而栅藻中 C20:0（31.72%）和 C18:2（22.26%）占主导地位，聚球藻中 C18:2（22.26%）占主导地位。
