Inhibition mechanism of crude lipopeptide from Bacillus subtilis against Aeromonas veronii growth, biofilm formation, and spoilage of channel catfish flesh
文献类型： 外文期刊
作者： Li, Yali 1 ; Wangjiang, Tianqi 1 ; Sun, Zhida 2 ; Shi, Liu 1 ; Chen, Sheng 1 ; Chen, Lang 1 ; Guo, Xiaojia 1 ; Wu, Wenjin 1 ; Xiong, Guangquan 1 ; Wang, Lan 1 ;
作者机构： 1.Hubei Acad Agr Sci, Minist Agr & Rural Affairs, Inst Agroprod Proc & Nucl Agr Technol, Key Lab Agr Prod Cold Chain Logist, Wuhan 430064, Peoples R China
2.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China
3.Anhui Agr Univ, Sch Tea & Food Sci Technol, State Key Lab Tea Plant Biol & Utilizat, Hefei 230036, Peoples R China
关键词： Aeromonas veronii; Bacillus subtilis; Lipopeptides; Inhibition mechanism; Spoil potential; Channel catfish
期刊名称：FOOD MICROBIOLOGY （ 影响因子：5.3； 五年影响因子：5.5 ）
ISSN： 0740-0020
年卷期： 2024 年 120 卷
页码：
收录情况： SCI
摘要： Aeromonas veronii is associated with food spoilage and some human diseases, such as diarrhea, gastroenteritis, hemorrhagic septicemia or asymptomatic and even death. This research investigated the mechanism of the growth, biofilm formation, virulence, stress resistance, and spoilage potential of Bacillus subtilis lipopeptide against Aeromonas veronii. Lipopeptides suppressed the transmembrane transport of Aeromonas veronii by changing the cell membrane's permeability, the structure of membrane proteins, and Na+/K+-ATPase. Lipopeptide significantly reduced the activities of succinate dehydrogenase (SDH) and malate dehydrogenase (MDH) by 86.03% and 56.12%, respectively, ultimately slowing Aeromonas veronii growth. Lipopeptides also restrained biofilm formation by inhibiting Aeromonas veronii motivation and extracellular polysaccharide secretion. Lipopeptides downregulated gene transcriptional levels related to the virulence and stress tolerance of Aeromonas veronii. Furthermore, lipopeptides treatment resulted in a considerable decrease in the extracellular protease activity of Aeromonas veronii, which restrained the decomposing of channel catfish flesh. This research provides new insights into lipopeptides for controlling Aeromonas veronii and improving food safety.
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