Fig. 4

Fermentation kinetics: Isolate NGY10 cells were grown in YEPD broth and 5% v/v inoculum of overnight grown cells was diluted in different fermentation media and fermentation was performed for 24 h. Glucose (circle), ethanol (triangle) and cell biomass (star) were estimated at 30 °C (filled symbols) and 40 °C (clear symbols) after every 3.0 h. a Fermentation kinetics in synthetic media containing 100 g/l glucose. b Fermentation kinetics in acid-pretreated rice straw enzymatic hydrolysate (containing glucose: 26.38 g/l; xylose: 7.38 g/l; furfural: 0.618 g/l; HMF: 0.748 g/l and acetic acid: 1.91 g/l) and c Fermentation kinetics in alkali pre-treated rice straw enzymatic hydrolysate (containing glucose: 17.15 g/l; xylose: 5.63 g/l; furfural: 0.142 g/l; HMF:0.148 g/l and acetic acid:0.51 g/l)