Table 2.
Influence of additional nitrogen sources on chitinase production by the strain ANU 6277 cultured in CYS medium
| Nitrogen source (%) | Chitinase activity | |
|---|---|---|
| (U.mL-1) | ± SD | |
| *Control | 6.98 | ± 0.17 |
| NH4Cl (0.2%) | 3.68 | ± 0.16 |
| NH4 (SO4)2 (0.2%) | 5.68 | ± 0.19 |
| NaNO3 (0.2%) | 6.84 | ± 0.09 |
| KNO3 (0.2%) | 6.65 | ± 0.23 |
| L-glutamine (0.2%) | 6.83 | ± 0.57 |
| L-asparagine (0.2%) | 7.12 | ± 0.39 |
| Soybean meal (0.2%) | 7.19 | ± 0.07 |
| Soybean meal (0.4%) | 7.26 | ± 0.30 |
| Soybean meal (0.6%) | 8.05 | ± 0.24 |
| Soybean meal (0.8%) | 7.24 | ± 0.76 |
| Peptone (0.2%) | 6.95 | ± 0.69 |
| Yeast extract (0.2%) | 7.16 | ± 0.50 |
| Yeast extract (0.4%) | 8.89 | ± 0.34 |
| Yeast extract (0.6%) | 7.2 | ± 0.65 |
*
Control- CYS medium with 1% Chitin; Mean ± SD from three experiments