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Ge W, Yang Q, Wang H, Pan C, Lv M, Liang L, Ya S, Luo X, Wang W, Ma H. Acid tolerance response of Salmonella during the squid storage and its amine production capacity analysis. Arch Microbiol 2024; 206:139. [PMID: 38436732 DOI: 10.1007/s00203-024-03853-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 03/05/2024]
Abstract
Salmonella exhibits a strong inducible acid tolerance response (ATR) under weak acid conditions, and can also induce high-risk strains that are highly toxic, acid resistant, and osmotic pressure resistant to aquatic products. However, the induction mechanism is not yet clear. Therefore, this study aims to simulate the slightly acidic, low-temperature, and high-protein environment during squid processing and storage. Through λRed gene knockout, exploring the effects of low-acid induction, long-term low-temperature storage, and two-component regulation on Salmonella ATR. In this study, we found the two-component system, PhoP/PhoQ and PmrA/PmrB in Salmonella regulates the amino acid metabolism system and improves bacterial acid tolerance by controlling arginine and lysine. Compared with the two indicators of total biogenic amine and diamine content, biogenic amine index and quality index were more suitable for evaluating the quality of aquatic products. The result showed that low-temperature treatment could inhibit Salmonella-induced ATR, which further explained the ATR mechanism from the amino acid metabolism.
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Affiliation(s)
- Wei Ge
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Qiong Yang
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Hui Wang
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Chuanyan Pan
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Min Lv
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Lingyun Liang
- Aquatic Technology Promotion Station in Jinchengjiang District, Hechi, 547000, China
| | - Shiya Ya
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Xu Luo
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China
| | - Weisheng Wang
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530200, China.
| | - Huawei Ma
- Guangxi Engineering Research Center of Processing and Storage of Characteristic and Advantage Aquatic Products, Guangxi Academy of Fishery Sciences, Nanning, 530021, China.
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