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Enzymes and microorganisms jointly promote the fermentation of rapeseed cake

文献类型： 外文期刊

作者： Song, Yujie 1 ; Sun, Litao 2 ; Zhang, Shuning 1 ; Fan, Kai 1 ; Wang, Huan 1 ; Shi, Yujie 1 ; Shen, Yaozong 1 ; Wang, Wenmei 3 ; Zhang, Jie 1 ; Han, Xiao 1 ; Mao, Yilin 1 ; Wang, Yu 1 ; Ding, Zhaotang 1 ;

作者机构： 1.Qingdao Agr Univ, Tea Res Inst, Qingdao, Peoples R China

2.Shandong Acad Agr Sci, Tea Res Inst, Jinan, Peoples R China

3.Coconstruct Serv Ctr Three Dist Taolin Town, Jinan, Shandong, Peoples R China

关键词： rapeseed cake; enzymatic fermentation; bacillus; Lysinibacillus; organic acid; amino acid; fatty acid

期刊名称：FRONTIERS IN NUTRITION （ 影响因子：6.59； 五年影响因子：6.873 ）

ISSN： 2296-861X

年卷期： 2022 年 9 卷

页码：

收录情况： SCI

摘要： Rapeseed cake is a by-product of rapeseed oil separation. The nutritional components of rapeseed cake mainly include a variety of carbohydrates, proteins, and minerals. In order to improve the conversion rate of rapeseed cake, we studied the physicochemical properties, the structure of microbial communities, and the composition of metabolites in rapeseed cake after enzymatic fermentation. The results showed that the addition of enzymatic preparation increased microbial diversity. The relative abundance of Bacillus, Lysinibacillus, Empedobacter, Debaryomyces, Hyphopichia, and Komagataella in enzymatic fermentation was significantly higher than that in natural fermentation. Unlike natural fermentation, microbial diversity during enzymatic fermentation is specific, which improves the efficiency of fermentation. Otherwise, enzymatic fermentation promotes the conversion of macromolecular substances in rapeseed cake, which increases small metabolites, such as fatty acids, organic acids, amino acids and their derivatives. The metabolite enrichment pathway is mostly concentrated in sugar metabolism and fatty acid metabolism. In conclusion, after adding enzymatic preparation, enzymes and microorganisms jointly promote the transformation of macromolecules during the fermentation of rapeseed cake, which laid a good foundation for further utilization of rapeseed cake.

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