Table 2 Activities of the enzymes xylose reductase (XR), xylitol dehydrogenase (XDH), alcohol dehydrogenase (ADH) and pyruvate decarboxylase (PDC) in the tested O. polymorpha strains with the HXS1 and AZF1 genes deletion and overexpression. Activities were measured on 72 h of fermentation on xylose at 37 °C

0.99 ± 0.05

0.62 ± 0.03

0.97 ± 0.05

0.33 ± 0.02

0.98 ± 0.04

0.64 ± 0.03

0.82 ± 0.03

0.43 ± 0.02

0.89 ± 0.04

0.50 ± 0.02

0.76 ± 0.03

0.53 ± 0.02

0.82 ± 0.04

0.56 ± 0.03

0.80 ± 0.04

0.52 ± 0.02

0.85 ± 0.04

0.67 ± 0.03

0.81 ± 0.03

0.37 ± 0.02

0.84 ± 0.04

1.05 ± 0.05

1.07 ± 0.05

0.69 ± 0.03

0.87 ± 0.04

1.42 ± 0.06

0.70 ± 0.03

0.92 ± 0.05

0.87 ± 0.04

1.47 ± 0.07

1.06 ± 0.05

0.83 ± 0.04