TABLE 1.
Fermentation products of R. inulinivorans on different growth substrates
| Substrate and straina | Concn of fermentation product (mM ± SD)b
|
||
|---|---|---|---|
| Propionate | Propanolc | Butyrate | |
| Glucose (0.2%) | |||
| A2-194 | 1.19 ± 0.12 | 0 | 8.34 ± 0.12 |
| A2-194(F) | 0.15 ± 0.27 | 0 | 8.20 ± 0.64 |
| Inulin (0.5%) | |||
| A2-194 | 0.17 ± 0.12 | 0 | 8.25 ± 1.08 |
| A2-194(F) | 0.5 ± 0.16 | 0 | 8.88 ± 1.90 |
| Glucose (0.2%) + 1,2- propanediold | |||
| A2-194 | 1.29 ± 0.08 | 9.29 ± 1.32 | 7.10 ± 0.02 |
| A2-194(F) | 3.88 ± 0.36 | 22.16 ± 6.45 | 14.11 ± 0.04 |
| Fucose (0.5%) | |||
| A2-194e | |||
| A2-194(F) | 18.84 ± 0.64 | 7.31 ± 1.72 | 12.77 ± 0.93 |
a
R. inulinivorans A2-194, wild-type strain; A2-194(F), strain able to grow on fucose.
b
Values shown are means ± standard deviations of the results for triplicate growth tubes cultured for 16 h on YCFA medium with specific supplements.
c
Propanol production was negligible on glucose and inulin.
d
Growth on 1,2-propanediol (82 mM) was only possible with glucose supplementation.
e
Strain A2-194 grows on fucose only after an extended lag phase (illustrated in Fig. 1).