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Changes in bacterial community structure and quality characteristics during fermentation of stinky variegated carp (Aristichthys nobilis)

文献类型： 外文期刊

作者： Pang, Chunxia 1 ; Li, Yi 1 ; Yu, Renying 1 ; Wang, Junhao 1 ; Li, Xuerui 2 ; Chen, Yuru 1 ; Yu, Lijuan 2 ; Luo, Haibo 1 ;

作者机构： 1.Nanjing Normal Univ, Sch Food Sci & Pharmaceut Engn, Nanjing 210023, Jiangsu, Peoples R China

2.Yunnan Acad Agr Sci, Agroprod Proc Res Inst, Kunming 650221, Yunnan, Peoples R China

期刊名称：JOURNAL OF FOOD PROCESSING AND PRESERVATION （ 影响因子：2.609； 五年影响因子：2.61 ）

ISSN： 0145-8892

年卷期：

页码：

收录情况： SCI

摘要： Bacterial metabolism greatly affects the quality and flavor of traditional, low-salt fermented fish. We assessed changes in the bacterial community structure and quality characteristics of "stinky" variegated carp (Aristichthys nobilis) during fermentation at 20 degrees C. The total viable count (TVC), firmness, chewiness, tackiness, total volatile base nitrogen (TVB-N) and thiobarbituric acid-reactive substance (TBARS) levels, and relative peak area of volatile compounds significantly (p < .05) increased, while the pH, weight, and elasticity dramatically decreased, during fermentation. The total free amino acid (FAA) content decreased early during fermentation (from 0-2 d) and then significantly (p < .05) increased (from 3-5 d). The levels of flavorful AAs (aspartic acid, glutamate, phenylalanine, tyrosine, alanine, and glycine) increased markedly after 4 d of fermentation. Solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) revealed that the levels of ketones, ethers, and nitrogenous compounds increased significantly (p < .05) during fermentation. Illumina MiSeq sequencing identified Plesiomonas as the dominant bacterial genus during fermentation, followed by Aeromonas, Cetobacterium, Vibrio, and Hathewaya. These bacteria may contribute to the flavor and aroma of stinky variegated carp. The association between bacterial succession and the flavor and taste of stinky fish was also discussed. Practical applications Variegated carp could be processed to create stinky fish. In this study, bacterial community structure and quality characteristics analysis were assessed. FAAs and volatile compounds related to flavor and aroma were found. A potential starter culture that could improve the quality of stinky variegated carp was identified. Our findings provide a theoretical basis for the industrial production of fermented stinky fish.

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