title: Scenedesmus sp. NJ-1 isolated from Antarctica: a suitable renewable lipid source for biodiesel production.
abstract: Microalgal lipids are promising alternative feedstocks for biodiesel production. Scenedesmus sp. NJ-1, an oil-rich freshwater microalga isolated from Antarctica, was identified to be a suitable candidate to produce biodiesel in this study. This strain could grow at temperatures ranging from 4 to 35 °C. With regular decrease in nitrate concentration in the medium, large quantities of triacylglycerols accumulated under batch culture conditions detected by thin layer chromatography and BODIPY 505/515 fluorescent staining. Scenedesmus sp. NJ-1 achieved the average biomass productivity of 0.105 g l⁻¹ d⁻¹ (dry weight) and nearly the highest lipid content (35 % of dry cell weight) was reached at day 28 in the batch culture. Neutral lipids accounted for 78 % of total lipids, and C18:1 (n-9), C16:0 were the major fatty acids in total lipids, composing 37 and 20 % of total fatty acids of Scenedesmus sp. NJ-1 grown for 36 days, respectively. These results suggested that Scenedesmus sp. NJ-1 was a good source of microalgal oils for biodiesel production.
authors.affiliation: Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Chen
authors.forename: Yangmin
authors.initials: Y
authors.lastname: Gong
authors.forename: Xiantao
authors.initials: X
authors.lastname: Fang
authors.forename: Hanhua
authors.initials: H
authors.lastname: Hu
mesh_terms: D000864:Antarctic Regions; D056804:Biofuels / Q000382:microbiology*; D018533:Biomass; D003470:Culture Media / Q000737:chemistry; D048028:DNA, Algal / Q000737:chemistry / Q000235:genetics; D050356:Lipid Metabolism; D008969:Molecular Sequence Data; D044444:Scenedesmus / Q000145:classification / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism*; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D013696:Temperature
chemical_list: D056804:Biofuels; D003470:Culture Media; D048028:DNA, Algal