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Recycling of spent mushroom substrate biowaste as an Anti-UV agent for Bacillus thuringiensis

文献类型： 外文期刊

作者： Rao, Wenhua 1 ; Zhang, Dingyang 1 ; Guan, Xiong 1 ; Pan, Xiaohong 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, State Key Lab Ecol Pest Control Fujian & Taiwan Cr, Fuzhou 350002, Fujian, Peoples R China

2.Forestry Univ, Coll Plant Protect Fujian Agr, MOE & Ministerial & Prov Joint Innovat Ctr Safety, Key Lab Biopesticide & Chem Biol, Fuzhou 350002, Fujian, Peoples R China

3.Inst Plant Protect, Fujian Acad Agr Sci, Fuzhou 350003, Peoples R China

关键词： Bacillus thuringiensis; Spent mushroom substrate; Lignin -carbohydrate complex; Anti -UV activity

期刊名称：SUSTAINABLE CHEMISTRY AND PHARMACY （ 影响因子：5.464； 五年影响因子：5.599 ）

ISSN：

年卷期： 2022 年 30 卷

页码：

收录情况： SCI

摘要： It is highly desirable to develop a Bacillus thuringiensis (Bt) formulation with high UV resistibility to increase its application duration in the field. In this work, we studied spent mushroom substrate extract (SMSE) for its anti-UV activity on Bt. The results demonstrated that SMSE could efficiently protect the active components of Bt from UV irradiation. After 96 h of UV exposure, the residual toxicity of Bt fermentation of the SMSE (0.6%, w/v) treatment was 17 times higher than that of the control treatment. SMSE was mainly composed of lignin (77.69%), carbohydrate (7.58%) and protein (4.18%). The anti-UV activity was shown by the lignin and carbohydrate fractions, but not the protein fractions. In addition, it was found that lignin and lignincarbohydrate complex (LCC) in the SMSE were a type of lignin with low sugar content, low thermal stability, narrow molecular weight distribution and were typical gramineous plant lignin. Lignin and LCC possessed highly UV-screening effects and reactive oxygen species scavenging ability that could improve the UV stability of Bt formulation. Our study provides a green method for the utilization of SMS biowaste and increased the UV stability of Bt formulation.

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