Seven imidazolium-based ionic liquids, including 1-Ethyl-3-methylimidazolium chloride, 1-Ethyl-3-methylimidazolium acetate, 1-Ethyl-3-methylimidazolium diethyl phosphate, 1-Allyl-3-methylimidazolium chloride, 1-Butyl-3-methylimidazolium chloride, 1-Butyl-3-methylimidazolium acetate, 1-benzyl-3-methylimidazolium chloride, which commonly used in lignocellulose pretreatment were chosen to investigate their effects on lipid production by Trichosporon fermentans HWZ004. The results showed that the inhibitory effect of ILs on cell growth was stronger than that on lipid accumulation, and the inhibition varied with ILs' structure and concentration. ILs that composed of Bzmim+ or OAc- were more toxic to T. fermentans HWZ004. Besides, imidazolium cation with longer side chain exhibited stronger inhibition than that with short side chain. Further study of the sugar consumption of T.fermentans HWZ004 indicated that glucose utilization was retarded by all the tested ILs. Interestingly, at low concentration, ILs could stimulate the consumption of xylose. However, with the increase of ILs concentration in the media, the cell growth and lipid accumulation of T. fermentans HWZ004 were also inhibited.

Effects of imidazolium-based ionic liquids on lipid fermentation by <i>Trichosporon fermentans</i> HWZ004

248th National Meeting (2014)

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Effects of imidazolium-based ionic liquids on lipid fermentation by Trichosporon fermentans HWZ004