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Table 3 Overview of ethanol yield, ethanol productivity, percentage of the theoretical maximum yield and sugar conversion by GSE16-T18 and MD4 in bagasse hydrolysate BH 31B spiked with different inhibitors

From: Identification of the major fermentation inhibitors of recombinant 2G yeasts in diverse lignocellulose hydrolysates

  Ethanol yield (g/g) by GSE16-T18 Ethanol yield (g/g) by MD4 Ethanol productivity (g/L/h) by GSE16-T18 Ethanol productivity (g/L/h) by MD4 % of theoretical maximum yield by GSE16-T18 % of theoretical maximum yield by MD4 Glucose conversion (%) by GSE16-T18 Xylose conversion (%) by GSE16-T18 Glucose conversion (%) by MD4 Xylose conversion (%) by MD4
No inhibitor 0.30 0.34 0.41 0.47 58 66 99 84 99 99
2% EtOH 0.19 0.19 0.26 0.26 37 37 99 59 98 64
3 g/L Levulinic Acid 0.30 0.33 0.42 0.46 59 65 99 80 99 98
6 g/L Levulinic Acid 0.31 0.32 0.43 0.45 60 63 99 85 99 95
3 g/L Formic Acid 0.26 0.33 0.37 0.46 52 66 99 63 99 99
6 g/L Formic Acid 0.25 0.30 0.35 0.41 50 58 99 50 99 72
3 g/L Furfural 0.23 0.18 0.32 0.25 45 35 98 32 54 17
6 g/L Furfural 0.17 0.11 0.24 0.16 34 22 73 4 7 9
3 g/L 5′-HMF 0.30 0.34 0.42 0.47 59 67 99 81 99 96
6 g/L 5′-HMF 0.29 0.34 0.40 0.48 56 67 99 72 99 96
0.03 g/L Vanillin 0.30 0.35 0.42 0.48 60 68 99 89 99 99
0.10 g/L Vanillin 0.28 0.36 0.40 0.50 56 71 99 89 99 99
0.30 g/L Vanillin 0.29 0.36 0.40 0.50 57 70 99 93 99 98
0.001 g/L 4-Hydroxy benzoic acid 0.32 0.35 0.45 0.48 63 68 99 95 99 99
0.003 g/L 4-Hydroxy benzoic acid 0.32 0.34 0.44 0.47 62 67 99 93 99 99
0.010 g/L 4-Hydroxy benzoic acid 0.33 0.32 0.46 0.44 65 62 99 93 99 99
0.1% Acetic Acid 0.30 0.31 0.42 0.44 59 62 99 80 99 95
0.3% Acetic Acid 0.30 0.31 0.42 0.43 59 60 99 88 99 93
0.003 g/L 4-Hydroxy benzaldehyde 0.32 0.32 0.45 0.45 63 64 99 90 99 99
0.010 g/L 4-Hydroxy benzaldehyde 0.33 0.34 0.45 0.47 64 67 99 94 99 99
0.030 g/L 4-Hydroxy benzaldehyde 0.32 0.34 0.45 0.47 63 67 99 95 99 99
  1. In the fermentation where 2% ethanol was added as inhibitor, this addition was subtracted from the final ethanol yield reached after 72 h
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Biotechnology for Biofuels

ISSN: 1754-6834

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