Kraft lignin biodegradation by Novosphingobium sp B-7 and analysis of the degradation process

被引：102

作者：

Chen, Yuehui ^{[1
,2
]}

Chai, Liyuan ^{[1
,2
]}

Tang, Chongjian ^{[1
,2
]}

Yang, Zhihui ^{[1
,2
]}

Zheng, Yu ^{[1
]}

Shi, Yan ^{[1
]}

Zhang, Huan ^{[1
]}

机构：

[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410017, Hunan, Peoples R China

[2] Cent S Univ, Chinese Natl Engn Res Ctr Control & Treatment Hea, Changsha 410017, Hunan, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 123卷

基金：

中国国家自然科学基金;

关键词：

Kraft lignin; Novosphingobium sp B-7; Biodegradation; GC-MS; LIMITED DEGRADATION; LACCASE; IDENTIFICATION; PURIFICATION; INDUSTRIAL;

D O I：

10.1016/j.biortech.2012.07.028

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study focused on the biodegradation of kraft lignin (KL) by Novosphingobium sp. B-7 using KL as sole carbon source. Results revealed that Novosphingobium sp. B-7 reduced the chemical oxygen demand (COD) by 34.7% in KL mineral salt medium after 7 days of incubation. Additionally, the maximum activities of manganese peroxidase (MnP) of 3229.8 U l(-1) and laccase (Lac) of 1275 U l(-1) were observed at 4th and 5th day, respectively. GC-MS analysis indicated that after incubated with Novosphingobium sp. B-7, low molecular weight alcohols and lignin-related monomer compounds such as ethanediol, p-hydroxy benzoic acid and vanillic acid were formed in the system, which strongly confirmed the degradation of KL by Novosphingobium sp. B-7. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：682 / 685

页数：4

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