Mechanism of patulin biodegradation by a reductase from Saccharomyces cerevisiae and its potential application to apple juice
文献类型： 外文期刊
作者： Yang, Chao 1 ; Hu, Chen 1 ; Huang, Lingxuan 1 ; Peng, Bangzhu 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China
2.Huazhong Agr Univ, Shenzhen Inst Nutr & Hlth, Wuhan 430070, Peoples R China
3.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Guangdong Lab Lingnan Modern Agr, Shenzhen Branch,Genome Anal Lab,Minist Agr, Shenzhen 518000, Peoples R China
关键词： PAT; Enzyme; Biodegradation; Apple juice
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：8.0； 五年影响因子：8.5 ）
ISSN： 0963-9969
年卷期： 2025 年 206 卷
页码：
收录情况： SCI
摘要： Bioenzymatic degradation exhibits great potential for mycotoxins removal. So far, little is known about patulin (PAT) degrading enzymes from Saccharomyces cerevisiae. Here, the degradation mechanism of PAT by a free methionine-R-sulfoxide reductase (FRMSR) from S. cerevisiae was investigated. The results showed that purified FRMSR had high degradability without cofactor and displayed strong substrate specificity. The optimal degradation conditions in aqueous solution were 37 degrees C and pH 7.0. Isothermal titration calorimetry and molecular docking suggested that the PAT degradation by FRMSR was related to the hydrogen bonds formed between amino acids with PAT. Site-specific mutagenesis indicated that the mutation of Asp151 had the most significant effect on the degradation rate. Furthermore, the addition of FRMSR successfully degraded 88.16 % of PAT in apple juice without affecting its soluble solids content, pH value, titrable acidity and total phenols. These findings could provide valuable insights into the development of PAT-degrading enzymes in apple products and their industrial applications.
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