title: Enhancement effect of ethyl-2-methyl acetoacetate on triacylglycerols production by a freshwater microalga, Scenedesmus sp. LX1.
abstract: Microalgae are very promising in biodiesel production. To reduce the production cost, approaches to enhance lipid and triacylglycerols (TAGs) production by microalgae have gained much attention. Effect of ethyl-2-methyl acetoacetate (EMA) on the lipid and TAGs production by a freshwater microalga, Scenedesmus sp. LX1, was studied in this paper. EMA below a concentration of 2 mg L(-1) had no significant effect on microalgal biomass or lipid production. The biomass and lipid productivity were about 0.47 g L(-1) and 139 mg L(-1), respectively, and the lipid content per biomass was about 30% (w/w). Promisingly, comparing with the one without EMA treatment, under EMA concentrations of 1.0-2.0 mg L(-1) the TAGs content per lipid (about 20% (w/w)) and TAGs productivity (about 23 mg L(-1)) were increased by 79% and 40%, respectively. Therefore, exposing algal cells with trace amount of EMA offers a viable method to enhance the TAGs production in Scenedesmus sp. LX1.
authors: State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
authors: Li
authors: L
authors: Xin
authors: Hu
authors: H
authors: Hong-Ying
authors: Yang
authors: Y
authors: Jia
authors: Wu
authors: W
authors: Yin-Hu
mesh_terms: D000090:Acetoacetates / Q000494:pharmacology*; D018533:Biomass; D005618:Fresh Water / Q000382:microbiology*; D050356:Lipid Metabolism / Q000187:drug effects; D058086:Microalgae / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism*; D044444:Scenedesmus / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism*; D014280:Triglycerides / Q000096:biosynthesis*
chemical_list: D000090:Acetoacetates; D014280:Triglycerides; C540374:ethyl 2-methyl acetoacetate