Novel insight into the formation mechanism of umami peptides based on microbial metabolism in Chouguiyu, a traditional Chinese fermented fish
文献类型： 外文期刊
作者： Yang, Daqiao 1 ; Li, Chunsheng 2 ; Li, Laihao 2 ; Wang, Yueqi 2 ; Wu, Yanyan 2 ; Chen, Shengjun 2 ; Zhao, Yongqiang 2 ; Wei, Ya 2 ; Wang, Di 2 ;
作者机构： 1.Ocean Univ China, Coll Food Sci & Engn, Qingdao 266003, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Natl R&D Ctr Aquat Prod Proc, Key Lab Aquat Prod Proc, Guangzhou 510300, Peoples R China
3.Jiangsu Ocean Univ, Coinnovat Ctr Jiangsu Marine Bioind Technol, Lianyungang 222005, Peoples R China
4.Dalian Polytech Univ, Collaborat Innovat Ctr Seafood Deep Proc, Dalian 116034, Peoples R China
关键词： Chouguiyu; Umami peptide; Protease; Microbiome; Interaction network
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：7.425； 五年影响因子：7.716 ）
ISSN： 0963-9969
年卷期： 2022 年 157 卷
页码：
收录情况： SCI
摘要： Umami peptides formed by microbial metabolism play an important role in the umami taste of Chouguiyu. In this study, 138 umami peptides and 6 kinds of proteases in two categories from 35 microbial genera were identified from Chouguiyu during the fermentation process by peptidomics and metagenomics analysis, respectively. The interaction network maps between the umami peptides and protease-producing microbial genera in each pro-tease classification were constructed based on Pearson's correlation coefficient after a two-way orthogonal partial least squares (O2PLS) evaluation. The proteases classified in 34 clusters of orthologous groups (COG) from Vagococcus, Peptostreptococcus, Acinetobacter, Psychrobacter, and Enterococcus played a major role in the formation of umami peptides. The core umami peptides with the highest abundance and correlation were mainly derived from troponin and myosin in mandarin fish. The lactic acid bacteria contributed most to the hydrolysis preparation of these umami peptides. This study is beneficial to screen the proteases and related microbial strains to improve the umami taste of Chouguiyu.
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