Journal
BIORESOURCE TECHNOLOGY
Volume 123, Issue -, Pages 682-685Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.07.028
Keywords
Kraft lignin; Novosphingobium sp B-7; Biodegradation; GC-MS
Funding
- National Research Funding for the Public Benefit of Environmental Protection [2011467062]
- Key Project of National Natural Science Foundation of China [50830301]
- National Funds for Distinguished Young Scientists of China [50925417]
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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.
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