4.8 Article

Production of metabolites in the biodegradation of phenanthrene, fluoranthene and pyrene by the mixed culture of Mycobacterium sp and Sphingomonas sp.

期刊

BIORESOURCE TECHNOLOGY
卷 102, 期 3, 页码 2965-2972

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.09.113

关键词

PAH; Mixed bacterial culture; Metabolite; Pathway; Biodegradation

资金

  1. National Natural Science Foundation of China (NSFC) [20977116]
  2. Natural Scientific Foundation of Guangdong Province [9451064004002394]
  3. Program for New Century Excellent Talents in University
  4. City University of Hong Kong [7008036]

向作者/读者索取更多资源

The effects of the mixed culture of Mycobacterium sp. strain A1-PYR and Sphingomonas sp. strain PheB4 on the degradation characteristics of single polycyclic aromatic hydrocarbon were investigated. In the mixed bacterial culture, phenanthrene, fluoranthene and pyrene were degraded by 100% at Day 3, 71.2% and 50% at Day 7, respectively. Compared to their respective pure cultures, the degradation of phenanthrene and fluoranthene decreased, but that of pyrene increased significantly. Based on GC-MS analysis, eight and six new metabolites were produced from the biodegradation of phenanthrene and fluoranthene, respectively, while only two new metabolites were formed from pyrene. To our knowledge, this is the first report that the mixed bacterial culture could increase the diversity of metabolites from PAH, but the diverse metabolite pattern was not necessarily beneficial to the degradation of the recalcitrant PAH. The enhancement on pyrene degradation was possibly attributed to the rapid growth of strain PheB4. (C) 2010 Elsevier Ltd. All rights reserved.

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