Effect of the selected organic acids on the sugar metabolism of Trichosporon fermentans. (A) and (D) Glucose consumption. (B) and (E) Xylose consumption. (C) and (F) Total sugar consumption. 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.