Fig. 2
From: Biovalorisation of crude glycerol and xylose into xylitol by oleaginous yeast Yarrowia lipolytica
Three-dimensional response surface plot for xylitol production showing the interactive effects of a xylose & NH4Cl, b xylose & YNB, c xylose & phosphate buffer, d YNB & NH4Cl, e phosphate buffer & NH4Cl and f YNB & phosphate buffer