Table 1.
Strain | Strain description | Aerobic growth rate (h−1) | Xylose consumption rate (g · g−1 h−1) | Ethanol production rate (g · g−1 h−1) | Ethanol yield (g · g−1) | Reference |
---|---|---|---|---|---|---|
BY4741-S1A | Piromyces XI-expressing strain overexpressing tal1 and Δgre3 | 0.001 | 0.007 | 0.0032 | 0.46 | This study |
BY4741-S1A1 | Piromyces XI mutant (xylA*1) strain overexpressing tal1 and Δgre3 | 0.001 | 0.0082 | 0.0041 | 0.50 | This study |
BY4741-S1A2 | Piromyces XI mutant (xylA*2) strain overexpressing tal1 and Δgre3 | 0.003 | 0.0123 | 0.0060 | 0.49 | This study |
BY4741-S1A3 | Piromyces XI mutant (xylA*3) strain overexpressing tal1 and Δgre3 | 0.009 | 0.0126 | 0.0056 | 0.45 | This study |
BY4741-S2A3K | Piromyces XI mutant (xylA*3) strain overexpressing tal1, XKS1, and Δgre3 | 0.061 | 0.057 | 0.024 | 0.42 | This study |
CEN.PK-RWB 202 | Piromyces XI-expressing strain | 0.005 | NAb | NA | NA | 19 |
CEN.PK-RWB202-AFX | Evolved strain from CEN.PK-RWB 202 for 160 days in xylose medium | 0.18 | 0.340 | 0.140 | 0.42 | 22 |
CEN.PK- RWB217 | Piromyces XI-expressing strain overexpressing XKS1, TKL1, RPE1, RKI1, and Δgre3 | 0.22 | 1.060 | 0.456 | 0.43 | 20 |
CEN.PK- TMB3066 | Piromyces XI-expressing strain overexpressing XKS1, TKL1, RPE1, RKI1, HXT7, and Δgre3 | 0.02 | 0.005 | 0.002 | 0.43 | 16 |
BWY10Xyl | Clostridium XI-expressing strain (evolved industrial strain in xylose medium) | 0.04 | 0.07 | 0.03 | 0.43 | 8 |
CEN.PK2-1C-TMB 3424 | XR/XDH-expressing strain overexpressing XKS1, GAL2, TKL1, RPE1, RKI1, and Δgre3 | NA | 0.06 | 0.007 | 0.12 | 37 |
The fermentation performances of S. cerevisiae BY4741-S1A, -S1A1, -S1A2, -S1A3, and -S2A3 were compared with previously reported results. The strains developed here have 10- to 30-fold- and 3- to 10-fold-higher rates than previously reported engineered strains for xylose isomerase pathways and oxidoreductase pathways, respectively.
NA, not available.