Table 2.
Effects of aluminum ion on mycelia growth and palmarumycins C12 and C13 production in liquid culture of Berkleasmium sp. Dzf12. Aluminum ion was added in medium on day 3 of culture. The period of culture lasted for 13 days. Palmarumycins C12 and C13 are abbreviated as C12 and C13, respectively.
| Aluminum ion conc. (mmol/L) | Mycelia biomass (g dw/L) | C12 yield (mg/L) | C13 yield (mg/L) | C12 plus C13 yield (mg/L) | Ratio of C12 yield to C13 yield |
|---|---|---|---|---|---|
| 0 | 7.35 ± 0.17 d | 1.83 ± 0.48 c | 38.14 ± 3.21 d | 39.97 ± 3.07 d | 0.05 |
| 2 | 11.16 ± 0.24 abc | 9.98 ± 1.47 c | 117.26 ± 5.70 b | 127.24 ± 4.25 c | 0.09 |
| 4 | 11.85 ± 0.41 ab | 14.94 ± 1.25 c | 166.27 ± 3.42 a | 181.21 ± 2.87 b | 0.09 |
| 6 | 11.76 ± 1.21 ab | 106.59 ± 5.31 b | 162.93 ± 4.08 a | 269.52 ± 5.19 a | 0.65 |
| 8 | 13.17 ± 0.39 a | 224.33 ±10.08 a | 59.23 ± 2.72 c | 283.56 ± 8.08 a | 3.79 |
| 10 | 10.51 ± 1.01 bc | 118.85 ± 3.93 b | 4.19 ± 0.93 e | 123.04 ± 3.91 c | 28.36 |
| 12 | 9.49 ± 0.98 cd | 115.55 ± 2.97 b | 3.58 ± 0.13 e | 119.13 ± 2.88 c | 32.28 |
Note: C12, palmarumycin C12; C13, palmarumycin C13; the values are expressed as means ± standard deviations (n = 3). Different letters indicate significant differences among the treatments in each column at p = 0.05 level.