Novel insight into physicochemical and flavor formation in naturally fermented tilapia sausage based on microbial metabolic network
文献类型： 外文期刊
作者： Zhao, Yue 1 ; Wang, Yueqi 1 ; Li, Chunsheng 1 ; Li, Laihao 1 ; Yang, Xianqing 1 ; Wu, Yanyan 1 ; Chen, Shengjun 1 ; Zhao, 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab Aquat Prod Proc, Minist Agr & Rural Affairs, Natl R&D Ctr Aquat Prod Proc,South China Sea Fish, Guangzhou 510300, Peoples R China
2.Jiangsu Ocean Univ, Coinnovat Ctr Jiangsu Marine Bioind Technol, Lianyungang 222005, Peoples R China
关键词： Lactococcus; Pediococcus; Volatile compounds; Free amino acids; Biogenic amines; Correlation
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：6.475； 五年影响因子：6.508 ）
ISSN： 0963-9969
年卷期： 2021 年 141 卷
页码：
收录情况： SCI
摘要： The quality and flavor formation in fermented fish sausages are based on the complex metabolism of microbial community. In this study, the dynamic changes of physicochemical characteristics, volatile compounds, and microbial communities in the naturally fermented tilapia sausage were studied during the fermentation process. The main physical indexes (gel strength, whiteness, and hardness), dominant flavor free amino acids (glycine, alanine, and glutamic acid) and characteristic volatile flavor compounds (hexanal, heptanal, octanal, benzaldehyde, (E)-2-octenal, 4-ethylbenzaldehyde, (E)-2-heptenal, (E,E)-2,4-decadienal, 1-octen-3-ol, 2-pentylfuran, and 2-ethyl-furan) were significantly enhanced after fermentation, and were positively correlated with Lactococcus, Pediococcus, Enterococcus, and Lactobacillus. The microbial metabolic network showed that Lactococcus, Pediococcus, and Enterococcus played a significant role in the formation of physicochemical and flavor characteristics, while the accumulation of biogenic amines might result from the metabolism of Enterococcus, Enterobacter, and Citrobacter. Isolation of lactic acid bacteria in Lactococcus and Pediococcus might be suitable to improve the fermented tilapia sausage. Microbial metabolic network has revealed the physicochemical and flavor formation of tilapia sausage and can provide guidance for future research on screening of starters.
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