The Antibacterial Activity and Mechanism of Chlorogenic Acid Against Foodborne Pathogen Pseudomonas aeruginosa
文献类型： 外文期刊
作者： Su, Mengmeng 1 ; Liu, Fang 1 ; Luo, Zhang 2 ; Wu, Haihong 1 ; Zhang, Xinxiao 1 ; Wang, Daoying 1 ; Zhu, Yongzhi 1 ; Sun, 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Jiangsu, Peoples R China
2.Tibet Univ, Coll Agr & Anim Husb, Linzhi, Peoples R China
3.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang, Jiangsu, Peoples R China; Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base, Nanjing, Jiangsu, Peoples R China
4.Jiangsu PICE Serv Co Ltd, Nanjing, Jiangsu, Peoples R China
关键词： Pseudomonas aeruginosa; chlorogenic acid; intracellular membrane; lipopolysaccharide
期刊名称：FOODBORNE PATHOGENS AND DISEASE （ 影响因子：3.171； 五年影响因子：3.235 ）
ISSN： 1535-3141
年卷期：
页码：
收录情况： SCI
摘要： Chlorogenic acid (CA), an ester of caffeic acid, is a major phenolic compound in herbs. The antimicrobial activity of CA against Pseudomonas aeruginosa P1, a foodborne pathogen, was investigated in this study. To understand how CA injured target cells, the influence of CA on cell morphology was assessed. A sunken cell surface and detachment of outer membrane components in P. aeruginosa P1 were observed after being treated by CA. Following this, the intracellular membrane permeability and the content of lipopolysaccharide (LPS), a main component of outer membrane, were determined. The release of intracellular protein and ATP from P. aeruginosa P1 indicated that CA increased intracellular membrane permeability and resulted in the leakage of intracellular materials. The uptake of propidium iodide, a compromised cell membrane nucleic acid stain, further demonstrated that CA acted on the intracellular membrane. CA resulted in the decrease of LPS contents of P. aeruginosa P1, which supported the detachment of outer membrane. CA also downregulated the expression of major genes in LPS biosynthesis, suggesting that CA may inhibit intracellular metabolism of P. aeruginosa P1 cells. Thus, CA increased the intracellular membrane permeability, induced the exfoliation of outer membrane, and disturbed the intracellular metabolism. Damage of intracellular and outer membranes as well as disruption of cell metabolism resulted in cell death eventually. The finding suggested that CA has the potential to be developed as a preservative to control P. aeruginosa-associated foodborne diseases.
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