Figure 6From: Effect of organic acids on the growth and lipid accumulation of oleaginous yeast Trichosporon fermentansEffect of inoculum size on the inhibition of organic acids. Each organic acid was tested at the molar concentration of the tested organic acids that caused 50% inhibition of the lipid yield of Trichosporon fermentans. Cultures were incubated initially at pH 6.5, 25°C and 160 rpm for 7 days. The results are expressed relative to controls without organic acids. Biomass, lipid content and lipid yield of cultures in the absence of organic acids with 5%, 10% and 15% inoculum sizes were, respectively, 24.0 g/L, 61.7% and 14.8 g/L; 22.4 g/L, 58.6% and 13.1 g/L; and 21.6 g/L, 54.3% and 11.7 g/L. Ac, acetic acid; Fo, formic acid; Le, levulinic acid; Hy, 4-hydroxybenzoic acid; Fu, furoic acid; Ca, caproic acid; Ga, gallic acid; Fe, ferulic acid; Sy, syringic acid; Va, vanillic acid.Back to article page