期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 134, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2020.109979
关键词
Grasshopper sub-shrimp paste; Biogenic amines; Microbial diversity; Halophilic bacteria; Correlation analysis
资金
- National Key R&D Program of China [2017YFC1600403]
- Liaoning Province's Program for Promoting Liaoning Talents [XLYC1808034]
- Natural Science Foundation of Liaoning Province [20180550157]
The presence of biogenic amines (BAs) in fermented foods represents a health risk for consumers. Therefore, understanding how BAs are accumulated would enable better control of their content in fermented foods. In this study, the BA profiles of grasshopper sub shrimp pastes produced in different typical regions (Panjin, Rongcheng, Shouguang, Dalian, Tangshan, Qinhuangdao and Yantai) around the Bohai Sea were evaluated. Among the microbial diversity found in the shrimp pastes, Tetragenococcus, Lactobacillus, Aspergillus and unclassified k Fungi were the predominant genera. The results of RDA correlations between physicochemical-microbial indexes and BAs suggested that the high BAs content in shrimp paste might be linked to the salinity of products and halophilic bacteria present in shrimp paste. A total of 442 strains of halophilic bacteria were identified and the five most abundant genera were Bacillus, Staphylococcus, Tetragenococcus, Virgibacillus and Oceanobacillus. Among these, 95.10% of species could produce BAs although their production appeared to vary greatly, with 30 strains considered as high producers, achieving a BA concentration of 787.54 +/- 20.87 mg/kg. Thus, controlling these bacteria might be the key to controlling the BA content in the shrimp paste.
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