Table 3.
Time interval (h) | Avg l-galactonate production rate (g liter−1 h−1) ± SEM (n = 3)b |
|
---|---|---|
ΔgaaB strain | ΔgaaB-gaaA strain | |
0–24 | 0.048 ± 0.001A | 0.070 ± 0.002B |
24–48 | 0.064 ± 0.001A | 0.075 ± 0.002B |
48–78 | 0.046 ± 0.000A | 0.054 ± 0.002A |
The l-galactonate production rates were determined for A. niger ΔgaaB and ΔgaaB-gaaA strains grown in flasks in modified Vogel medium with 10 g of d-galacturonate liter−1 and 2 g of d-xylose liter−1 at an initial pH of 3.0.
Values in the same row with different superscript letters differed significantly (P < 0.05).