Laccase production and wood degradation by a white-rot fungus Daedalea flavida |
| |
Authors: | DS Arora DK Sandhu |
| |
Institution: | Biology Department, Guru Nanak Dev University, Amritsar 143005, India |
| |
Abstract: | A comparative study has been conducted on seven white rot fungi to investigate their abilities to produce laccase and selectively degrade lignin. Laccase was produced constitutively on the different media tested. Of the different lignins, phenolic compounds and sugars involved, the highest laccase yield was obtained on indulin AT. Salicylic acid inhibited enzyme activity. A temperature of 20°C and 0.2% of indulin AT were found to be optimum for enzyme activity. No correlation was found between the amount of enzyme and fungal mass produced. During semisolid degradation of angiospermic wood sawdust, Daedalea flavida caused a total weight loss of 11%, with a lignin loss of 15.77% during two months of decay. Lignin removal was comparatively selective during the first month, during which time laccase production was also higher, indicating its probable role in lignin degradation. |
| |
Keywords: | Wood laccase lignin phenolic compounds |
本文献已被 ScienceDirect 等数据库收录! |
|