Table 2.
Activities of P.ostreatus IBL-02 laccase immobilized in sol-gels of different hydrophobicities
| No. | Gel precursors TMOS:PTMS (molar ratio) | Specific activity (U/mg) | Degree of immobilization | Specific activity corrected* (U/mg) | Relative activity |
|---|---|---|---|---|---|
| 1 |
Free laccase |
573 |
|
573 |
1 |
| 2 |
1:1 |
335 |
0.41 |
670 |
2.5 |
| 3 |
1:2 |
317 |
0.44 |
720 |
2.7 |
| 4 |
1:5 |
398 |
0.30 |
1326 |
3.3 |
| 5 |
1:10 |
288 |
0.49 |
587 |
2.0 |
| 6 |
1:15 |
170 |
0.52 |
326 |
1.9 |
| 7 |
1:20 |
149 |
0.56 |
266 |
1.7 |
| 8 |
1:25 |
97 |
0.58 |
167 |
1.7 |
| 9 | 1:30 | 11 | 0.63 | 17 | 1.5 |
*Activities were corrected with degree of immobilization.