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Table 2 Xylose and arabinose consumption rates and product yields from anaerobic batch fermentations by strains BWY02.XA (xylose and arabinose-growing laboratory strain), TMB 3400 (xylose-growing industrial strain) and TMB 3063 (xylose and arabinose-growing industrial strain). Defined mineral medium with mixtures of 20 g/l glucose and 20 g/l xylose or 20 g/l glucose and 20 g/l arabinose as well as 20 g/l glucose, 20 g/l xylose and 20 g/l arabinose were used as indicated. Product yields are calculated from the pentose phase of the fermentation. (n.a. not applicable; n.d. not detected)

From: Co-utilization of L-arabinose and D-xylose by laboratory and industrial Saccharomyces cerevisiae strains

Substrate Strain qxylose (g xylose h-1 g cells-1) qarabinose (g arabinose h-1 g cells-1) Yarabitol (g arabitol g arabinose-1) Yxylitol (g xylitol g xylose-1) Yglycerol (g glycerol g pentose-1) Yacetate (g acetate g pentose-1) Yethanol (g ethanol g pentose-1) final ethanol concentration (g l-1)
Glucose + xylose BWY02.XA 0.1 ± 0.0 n.a. n.a. 0.34 ± 0.01 0.12 ± 0.01 0.02 ± 0.00 0.23 ± 0.01 14.2 ± 0.7
Glucose + arabinose BWY02.XA n.a. 0.03 ± 0.00 0.77 ± 0.22 n.a. 0.00 ± 0.02 0.10 ± 0.04 n.d. 9.0 ± 2.0
Glucose + xylose + arabinose BWY02.XA 0.041 ± 0.080 0.035 ± 0.014 1.14 ± 0.18 0.33 ± 0.03 n.d. n.d. 0.07 ± 0.1 10.4 ± 2.2
  TMB 3400 0.066 ± 0.015 0.01 ± 0.00 approx. 1* 0.42 ± 0.00 0.01 ± 0.00 n.d. 0.09 ± 0.0 12.8 ± 0.5
  TMB 3063 0.042 ± 0.002 0.029 ± 0.002 0.68 ± 0.17 0.11 ± 0.03 0.03 ± 0.00 0.06 ± 0.01 0.16 ± 0.03 14.7 ± 2.0
  1. (* not possible to measure due to small amounts of arabinose consumed and arabitol produced)