Simultaneous degradation of p-nitrophenol and phenol by a newly isolated Nocardioides sp.

The Journal of General and Applied Microbiology

Jung-Hoon Yoon¹  Yong-Ha Park¹  Young-Gyun Cho²  Sung-Taik Lee² 

[1] Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology;Department of Biological Sciences, Korea Advanced Institute of Science and Technology

关键词: 4-nitrocatechol;    hydroquinone;    Nocardioides sp. NSP41;    p-nitrophenol;    phenol;    simultaneous degradation;   

DOI  :  10.2323/jgam.44.303

学科分类：微生物学和免疫学

来源: Applied Microbiology, Molecular and Cellulrar Biosciences Research Foundation

【 摘 要 】

A p-nitrophenol (PNP)- and phenol-mineralizing bacterium (strain NSP41) was isolated from an industrial wastewater and identified as a member of the genus Nocardioides. PNP was degraded via a hydroquinone pathway, and phenol was degraded through a catechol pathway in strain NSP41. Both enzyme systems for the degradation of PNP and phenol were induced simultaneously in the presence of both compounds. Although both enzyme systems were induced at the same time, PNP and phenol were degraded by the hydroquinone and catechol pathway, respectively. However, during the simultaneous degradation in the low phenol concentration, after the exhaustion of phenol, some PNP was transformed by the catechol pathway and 4-nitrocatechol was transiently accumulated. Kinetically, the addition of phenol greatly enhanced the apparent PNP degradation rate, which may be due to the increased cell mass by the assimilation of phenol.

【 授权许可】

Unknown