title: Sweetpotato vines hydrolysate induces glycerol to be an effective substrate for lipid production of Trichosporon fermentans.
abstract: By co-fermented with sweetpotato vines hydrolysate (SVH), glycerol can be used as an effective substrate for Trichosporon fermentans to produce lipids. Submerged fermentation results showed that T. fermentans exhibited a maximum lipid yield of 7.45 g l(-1) with a biomass of 17.95 g l(-1) on 10% SVH added glycerol mineral medium (Glycerol MM-10% SVH), which was 4.34-fold higher than that on glycerol mineral medium. Lipids produced on glycerol based media exhibited a significantly different fatty acid composition profile from that produced on sugar based media accompanying by a sharp increase in polyunsaturated fatty acids content. Biochemical behaviors characterization further demonstrated that SVH has a remarkable promoting effect on the biomass formation and glycerol uptake. The extremely high lipid yield on Glycerol MM-10% SVH was mainly attributed to the enhancement of SVH on biomass, although SVH is an excellent nutrient supplier for lipid accumulation due to its low nitrogen availability.
authors.affiliation: Institute of Plant Science, College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Shen
authors.forename: Hui
authors.initials: H
authors.lastname: Lin
authors.forename: Jumei
authors.initials: J
authors.lastname: Zhan
authors.forename: Qun
authors.initials: Q
authors.lastname: Wang
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D005227:Fatty Acids / Q000378:metabolism; D005990:Glycerol / Q000494:pharmacology*; D006868:Hydrolysis / Q000187:drug effects; D027723:Ipomoea batatas / Q000187:drug effects / Q000378:metabolism*; D008055:Lipids / Q000096:biosynthesis*; D014250:Trichosporon / Q000166:cytology / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*
chemical_list: D005227:Fatty Acids; D008055:Lipids; D005990:Glycerol