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Pathway and kinetics of malachite green biodegradation by Pseudomonas veronii.

Abstract：

: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 °C, pH 7.1, and inoculum amount of 2.5 × 107 cfu/mL), P. veronii JW3-6 could degrade 93.5% of 50 mg/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.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Song J,Han G,Wang Y,Jiang X,Zhao D,Li M,Yang Z,Ma Q,Parales RE,Ruan Z,Mu Y

doi

10.1038/s41598-020-61442-z

subject

Has Abstract

pub_date

2020-03-11 00:00:00

pages

4502

issue

1

issn

2045-2322

pii

10.1038/s41598-020-61442-z

journal_volume

10

pub_type

杂志文章

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