Corn cobs Rice straw Sugarcane bagasse Wheat straw
Glucose (g L-1) 1.8 ± 0.10 3.2 ± 1.04 4.1 ± 0.36 1.0 ± 0.01
Xylose (g L-1) 51.7 ± 1.19 46.9 ± 4.20 47.4 ± 1.09 50.0 ± 0.51
Arabinose(g L-1) 3.4 ± 0.20 1.3 ± 0.10 1.0 ± 0.01 1.7 ± 0.03
Acetate (g L-1) 4.2 ± 0.10 2.3 ± 0.12 3.5 ± 0.13 2.0 ± 0.09
Acid soluble Lignin (g L-1) 3.5 ± 0.12 7.6 ± 0.14 8.3 ± 0.15 2.0 ± 0.12
Max. xylitol (g L-1) 14.6 ± 1.18 14.3 ± 0.64 14.2 ± 0.76 14.6 ± 0.41
Max. ethanol (g L-1) 2.6 ± 0.32 2.1 ± 0.51 2.9 ± 0.61 1.4 ± 0.15
Max. glycerol (g L-1) 3.8 ± 0.77 0.83 ± 0.80 0.48 ± 0.10 3.6 ± 0.27
Xylitol yield (g g-1) 0.30 ± 0.02 0.32  ± 0.02 0.31  ± 0.01 0.30 ± 0.02
Xylitol productivity (g L-1 h-1) 0.16 ± 0.01 0.15  ± 0.01 0.20  ± 0.01 0.20 ± 0.01
Xylose consumption rate (g L-1 h-1) 0.42 ± 0.01 0.49  ± 0.04 0.49 ± 0.01 0.54  ± 0.03
Overall xylose utilization (%) 95.6  ± 1.16 100  ± 0.00 100  ± 0.00 100  ± 0.00
Biomass yield (g g-1) 0.16 ± 0.01 0.23  ± 0.04 0.28 ± 0.02 0.21  ± 0.01
Table 4: Summary of xylitol batch fermentation by Debaryomyces nepalensis NCYC 3413 with non-detoxified hemicellulose hydrolysates rich in xylose. Among all hydrolysates the overall xylose utilization and biomass yield were low in corn cobs due to prominent lignocellulosic inhibitors synergistic effect. Values presented are mean of triplicates ± SD.