Combination of ultrasound and chlorogenic acid for inactivation of planktonic and biofilm cells of Pseudomonas fluorescens
文献类型： 外文期刊
作者： Sun, Jinyue 1 ; Huang, Lihan 3 ; Sun, Zhilan 1 ; Wang, Debao 1 ; Liu, Fang 1 ; Du, Lihui 4 ; Wang, Daoying 1 ;
作者机构： 1.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base, Nanjing 210014, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Peoples R China
3.ARS, Eastern Reg Res Ctr, USDA, 600 E Mermaid Lane, Wyndmoor, PA 19038 USA
4.Nanjing Univ Finance & Econ, Key Lab Grains & Oils Qual Control & Proc, Collaborat Innovat Ctr Modern Grain Circulat & Sa, Coll Food Sci & Engn, Nanjing 210023, Peoples R China
关键词： Ultrasound; Chlorogenic acid; Pseudomonas fluorescens; Biofilm
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：7.425； 五年影响因子：7.716 ）
ISSN： 0963-9969
年卷期： 2022 年 155 卷
页码：
收录情况： SCI
摘要： This study investigated the synergistic efficacy of ultrasound (US, 50 kHz, 400 W) in combination with chlorogenic acid (CA; 0, 0.5, 1, and 2%) to inactivate Pseudomonas fluorescens planktonic and biofilm cells. The P. fluorescens planktonic and biofilm cells were treated with CA with and without US for 5, 10, 20, 30, or 60 min. Results showed that US enhanced the efficacy of CA for inactivation of both P. fluorescens planktonic and biofilm cells. Treatment with 2% CA and US could completely inactivate P. fluorescens planktonic cells within 10 min and the biofilm cells within 30 min. Confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM), ATP, and nucleic acid release assays indicated that the combination of US and CA could quickly damage the integrity of P. fluorescens planktonic and biofilm cell membranes. The combined treatment effectively inactivates P. fluorescens planktonic and biofilm cells via the synergetic destruction of the biofilm structure and bacterial cell integrity.
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