TABLE 4.
Influence of increasing concentrations of mixtures of weak acids (acetic and formic acid) and furans (furfural and HMF) on aerobic yeast growth in defined YNB medium supplemented with 20 g/L of glucose.
|
Relative growth (%)
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| Fm17 | Fm89 | Fm90 | Fm96 | M2n | MEL2 | YI30 | Ethanol Red | |
| RC25 | 94 ± 4 | 81 ± 4 | 87 ± 4 | 79 ± 4 | 50 ± 4 | 82 ± 4 | 85 ± 3 | 65 ± 3 |
| RC50 | 71 ± 4 | 62 ± 3 | 59 ± 3 | 53 ± 3 | 21 ± 1 | 60 ± 3 | 63 ± 3 | 44 ± 2 |
| RC100 | 60 ± 3 | 45 ± 2 | 42 ± 2 | 39 ± 3 | 14 ± 1 | 28 ± 1 | 55 ± 2 | 11 ± 1 |
| RC200 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
pH was adjusted to 5.0 with 5 M NaOH. Inhibitor tolerance values are expressed as relative growth (%) for each strain after 40 h. Results are the means of three replicates (± SD).