Table 3.
Acetaldehyde, higher alcohols and esters produced by NADPH-Bdh and NADH-Bdh strains in response to various levels of redox disturbance
| Compound (mg/L) | NADPH-Bdh | NADH-Bdh | ||||||
|---|---|---|---|---|---|---|---|---|
| Acetoin initial (mM) |
0 |
100 |
200 |
300 |
0 |
100 |
200 |
300 |
| Acetoin consumed (mM) |
0 |
100 |
150 |
245 |
0 |
100 |
160 |
164 |
| Acetaldehyde |
4.4 |
4.3 |
4.7 |
7.0 |
4.5 |
51.8 |
123.9 |
151.1 |
| Ethyl hexanoate |
0.13 |
0.09 |
0.08 |
0.03 |
0.15 |
0.12 |
0.06 |
0.05 |
| Ethyl octanoate |
0.23 |
0.13 |
0.13 |
0.04 |
0.28 |
0.16 |
0.06 |
0.04 |
| Ethyl decanoate |
0.16 |
0.02 |
< 0.01 |
< 0.01 |
0.13 |
0.06 |
< 0.01 |
< 0.01 |
| Ethyl acetate |
19.3 |
28.8 |
30.5 |
37.7 |
19.1 |
31.0 |
52.5 |
53.4 |
| Isoamyl alcool |
25.6 |
27.1 |
27.5 |
27.8 |
24.9 |
26.8 |
29.1 |
29.5 |
| Isoamyl acetate |
0.70 |
0.88 |
0.90 |
0.55 |
0.83 |
0.80 |
0.74 |
0.74 |
| Isobutanol |
5.5 |
N.D. |
5.9 |
8.0 |
4.8 |
7.7 |
10.2 |
11.3 |
| Isobutyl acetate |
0.06 |
0.06 |
0.05 |
0.08 |
0.03 |
0.32 |
0.95 |
1.21 |
| Propanol |
16.3 |
17.1 |
16.5 |
16.3 |
15.3 |
21.1 |
25.1 |
29.3 |
| Phenyl ethanol | 16.8 | 26.4 | N.D. | 53.0 | N.D. | 6.8 | 7.6 | 8.5 |
N.D. not determined.