Mineralization of p-nitrophenol by a new isolate Arthrobacter sp Y1

文献类型： 外文期刊

第一作者： Yan, C. Yan

作者： Yan, C. Yan;Li, Ying Y.;Zhou, Bo;Li, Wen;Peng, Xiang;Zhang, Jing S.

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关键词： activated sludge

期刊名称：JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES （ 影响因子：1.99； 五年影响因子：2.116 ）

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收录情况： SCI

摘要： Arthrobacter sp. Y1, capable of metabolizing p-nitrophenol (PNP) as the sole carbon, nitrogen and energy source was isolated from activated sludge. The bacterium could tolerate concentrations of PNP up to 600 mg L-1, and degradation of PNP was achieved within 120 h of incubation. PNP and its metabolites were analyzed by high performance liquid chromatography (HPLC). The metabolite formed indicated that the organism followed the 4-nitrocathechol (4-NC) pathway for metabolism of this compound. The relevant degrading-enzyme was extracellular. Addition of other carbon source (glucose 0 similar to 30 g L-1) led to accelerated degradation. If the glucose concentration exceeded 30 g L-1, however, degradation was repressed. Spectrophotometry assay of the nitrite and genotoxic study showed that strain Y1 could detoxify PNP. Therefore, the present study may provide a basis for the development of the bioremediation strategies to remedy the pollutants in the environment.

分类号： X`X5

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