Pathway and kinetics of malachite green biodegradation by Pseudomonas veronii

文献类型： 外文期刊

第一作者： Song, Jinlong

作者： Song, Jinlong;Han, Gang;Wang, Yani;Yang, Zhen;Mu, Yingchun;Jiang, Xu;Li, Miaomiao;Ma, Qingyun;Ruan, Zhiyong;Zhao, Dongxue;Li, Miaomiao;Parales, Rebecca E.

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2020 年 10 卷 1 期

页码：

收录情况： SCI

摘要： Malachite green is a common environmental pollutant that poses a great threat to non-target organisms, including humans. This study reports the characterization of a bacterial strain, Pseudomonas veronii JW3-6, which was isolated from a malachite green enrichment culture. This strain degraded malachite green efficiently in a wide range of temperature and pH levels. Under optimal degradation conditions (32.4 degrees C, pH 7.1, and inoculum amount of 2.5 x 10(7) cfu/mL), P. veronii JW3-6 could degrade 93.5% of 50mg/L malachite green within seven days. Five intermediate products from the degradation of malachite green were identified: leucomalachite green, 4-(dimethylamino) benzophenone, 4-dimethylaminophenol, benzaldehyde, and hydroquinone. We propose a possible degradation pathway based on these findings. The present study is the first to report the degradation of malachite green by P. veronii and the identification of hydroquinone as a metabolite in the degradation pathway.

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