Isolation of Bacillus sp. with high laccase activity for green biodecolorization of synthetic textile dyes

New Bacillus sp. strains with spore-laccase activity were isolated from rotten wood and soil samples and were identified as Bacillus sp. FM-78 and Bacillus paramycoides FM-86 by 16S rDNA gene sequence analysis. Both laccases were stable at broad pH range and high temperature. The laccase of strain FM...

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Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 86(2022), 4 vom: 14. Aug., Seite 777-786
1. Verfasser: Yang, Jing (VerfasserIn)
Weitere Verfasser: Xu, Hao, Zhao, Jian, Zhang, Ning, Xie, Jingcong, Jiang, Jianchun
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Coloring Agents Laccase EC 1.10.3.2
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520 |a New Bacillus sp. strains with spore-laccase activity were isolated from rotten wood and soil samples and were identified as Bacillus sp. FM-78 and Bacillus paramycoides FM-86 by 16S rDNA gene sequence analysis. Both laccases were stable at broad pH range and high temperature. The laccase of strain FM-78 showed preferable activity and stability, with no loss of activity after 7 days incubation at pH 9.0, and 20.36% of its initial activity obtained after 10 h at 80 °C. 1 mmol/L EDTA, NaN3 and SDS resulted in about 46-59% inactivation and strongly inhibition (87.88%) was caused by 1 mmol/L L-cysteine. However, the spore laccase could tolerate towards 0.5 mol/L NaCl as well as 10% of organic solvents. Reactive black 5, reactive blue 19 and crystal violet were decolorized by the spore laccase in the absence of mediator. The decolorization process was efficiently promoted with the presence of acetosyringone, and the color removal ratio was more than 80% in 1 h with the pH values of 6.6 or 9.0. Finally, the above unusual properties of Bacillus sp. spore laccase indicated it as a potential candidate in the dye decolorization in an ecofriendly and cost-effective way 
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700 1 |a Xu, Hao  |e verfasserin  |4 aut 
700 1 |a Zhao, Jian  |e verfasserin  |4 aut 
700 1 |a Zhang, Ning  |e verfasserin  |4 aut 
700 1 |a Xie, Jingcong  |e verfasserin  |4 aut 
700 1 |a Jiang, Jianchun  |e verfasserin  |4 aut 
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