| 嗜碱细菌复合碳源条件下对麦草木质素的降解 |
| 摘要点击 1560 全文点击 1499 投稿时间：2001-02-16 修订日期：2001-05-18 |
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| 中文关键词 嗜碱细菌 复合碳源 木质素生物降解 扫描电镜 |
| 英文关键词 alkaliphilic bacteria compounded carbon lignin biodegradation SEM |
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| 中文摘要 |
| 在碱性液体培养条件下(pH≈10.5), 研究复合碳源共代谢最佳综合条件下嗜碱性木质素降解细菌6号菌株产酶、降解能力及菌株的生长状况.结果显示,虫漆酶(Laccase)在培养的第4天酶活达到最高值2915.37U/L、锰依赖过氧化物酶(MnP)在培养的第8天酶活达到最高值1152.88U/L,培养10d麦草中木质素降解49.84%.同时通过扫描电镜分析探讨了6号菌株降解木质素的微观过程,证明了6号菌株优先降解木质素的特性和降解方式. |
| 英文摘要 |
| The article researched enzymes production、the degradation rate of lignin and strain growth of alkaliphilic ligninolytic bacteria strain No.6 in alkaline liquid medium (pH≈10.5) with compounded carbons. The results showed that the highest activities of laccase and MnP were 2915.37U/L(4th d) and 1152.88U/L(8th d), respectively, and the strain degraded 49.84% lignin of wheat straw during ten days cultivation. The changes of ultrastructure of wheat straw caused by strain No.6 attack were investigated with SEM (scan electron microscopy). |
