Table 1.
Comparison of chitinolytic enzyme, protease and αGI production by various bacteria using deCSP as C/N source.
| Strain | Activity (U/mL) | ||||
|---|---|---|---|---|---|
| Exochitinase | Chitinase | Chitosanase | Protease | aGI | |
| Paenibacillus macerans TKU029 | - | 0.118 + 0.027 | 0.122 + 0.035 | 0.925 + 0.032 | 62.90 + 6.755 |
| P. mucilaginosus TKU032 | - | 0.072 + 0.016 | 0.086 + 0.021 | 1.366 + 0.045 | 178.38 + 10.312 |
| Paenibacillus sp. TKU037 | - | 0.135 + 0.018 | 0.069 + 0.019 | 1.203 + 0.041 | 180.77 + 11.620 |
| Paenibacillus sp. TKU042 | - | 0.182 + 0.036 | 0.088 + 0.015 | 1.257 + 0.038 | 185.45 + 3.085 |
| Bacillus licheniformis TKU004 | - | - | 0.089 + 0.022 | 0.121 + 0.023 | 91.29 + 8.692 |
| Bacillus subtilis TKU007 | - | 0.163 + 0.023 | - | 0.178 + 0.011 | 96.06 + 7.008 |
| Lactobacillus paracasei TKU010 | - | 0.216 + 0.033 | - | 0.113 + 0.009 | - |
| Serratia marcescens TKU011 | - | 0.201 + 0.029 | 0.149 + 0.021 | 0.115 + 0.012 | 73.63 + 4.090 |
| Serratia ureilytica TKU013 | 0.276 + 0.012 | 0.266 + 0.018 | 0.099 + 0.017 | 0.202 + 0.024 | 64.52 + 3.474 |
| Pseudomonas tamsuii TKU015 | - | 0.193 + 0.030 | 0.105 + 0.013 | 0.103 + 0.008 | 51.54 + 4.627 |
| Serratia sp. TKU016 | 0.152 + 0.021 | 0.104 + 0.012 | 0.110 + 0.022 | 0.101 + 0.007 | 68.962.292 |
| Serratia sp. TKU020 | 0.121 + 0.016 | 0.102 + 0.015 | 0.151 + 0.013 | 0.099 + 0.009 | 73.63 + 6.420 |
| Bacillus cereus TKU028 | - | 0.127 + 0.018 | 0.111 + 0.018 | 0.776 + 0.053 | 68.72 + 5.143 |
| Bacillus mycoildes TKU038 | - | - | 0.101 + 0.017 | 0.463 + 0.036 | 111.67 + 1.036 |
| Bacillus mycoildes TKU040 | - | 0.191 + 0.020 | - | - | - |
| Rhizobium sp.TKU041 | - | - | - | - | - |
deCSP was used at the sole C/N source with a concentration of 1% (w/v). Culture conditions were set at 37 °C, 150 rpm shaking speed, 100/250 mL (volume of medium/flask) for two days. The cultures of fermented deCSP were obtained and centrifuged at 12,000× g for 20 min to collect the culture supernatants. (-) expressed activity lower than 0.1 U/mL and 10 U/mL for exochitinase and αGI, respectively.