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Effects of phenyllactic acid as sanitizing agent for inactivation of Listeria monocytogenes biofilms

文献类型： 外文期刊

作者： Liu, Fang 1 ; Du, Lihui 2 ; Zhao, Tong 3 ; Zhao, Ping 3 ; Doyle, Michael P. 3 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Jiangsu, Peoples R China

2.Nanjing Univ Finance & Econ, Coll Food Sci & Engn, Collaborat Innovat Ctr Modern Grain Circulat & Sa, Key Lab Grains & Oils Qual Control & Proc, Nanjing 210023, Jiangsu, Peoples R China

3.Univ Georgia, Ctr Food Safety, Coll Agr & Environm Sci, 1109 Expt St, Griffin, GA 30223 USA

关键词： Listeria monocytogenes;Biofilm;Phenyllactic acid;Lactic acid;Levulinic acid;Sodium dodecyl sulfate

期刊名称：FOOD CONTROL （ 影响因子：5.548； 五年影响因子：5.498 ）

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收录情况： SCI

摘要： 3-Phenyllactic acid (PLA) has been reported as an antimicrobial compound with broad-spectrum activity, and it can be produced by food-grade microorganisms, including a wide range of lactic acid bacteria species. In this study, the efficacy of PIA to inactivate Listeria monocytogenes planktonic cells and biofilms was determined and compared with the killing effects of lactic acid (LA), and levulinic acid (LVA) with sodium dodecyl sulfate (SDS). L monocytogenes biofilms of different maturities, i.e., 37 degrees C for 3 and 7 d and 15 degrees C for 4 and 7 d, were produced on 24-well flat-bottom polystyrene plates and treated with PLA (0.25%-3%), LA (1% and 3%), and 3% LVA plus 2% SDS for 5,10, 30, 60 min, respectively. The results of pure culture assays revealed that 1% PLA reduced the population of L. monocytogenes by 7 log CFU/ml within 1 min. The biofilms assays revealed that L. monocytogenes biofilms could be inactivated to different degrees by the sanitizer treatments. The killing effect of PLA treatment was increased as exposure time and PIA concentrations were increased. The sanitizers of 3% PLA and 1% PLA effectively inactivated the early mature biofilm after a 5-min treatment, whereas 3% PLA was better than all the other sanitizers, including 1% PLA, 3% LA, 3% LVA and 2% SDS for inactivation of the late mature biofilm after a 5-min treatment. Confocal laser scanning microscopy analysis revealed that bacterial cell damages in the biofilm were enhanced as the PLA concentrations and exposure times were increased. These results suggested that PLA was effective in inactivating L monocytogenes and its biofilm, even for the late mature biofilm. (C) 2017 Elsevier Ltd. All rights reserved.

  • 相关文献

[1]Antibacterial and antibiofilm activity of phenyllactic acid against Enterobacter cloacae. Liu, Fang,Wang, Fengting,Wang, Daoying,Zhang, Xinxiao,Sun, Zhilan,Xu, Weimin,Du, Lihui,Zhao, Tong,Doyle, Michael P.. 2018

[2]Bacteriocinogenic Enterococcus faecium inhibits the virulence property of Listeria monocytogenes. Ye, Keping,Huang, Yan,Liu, Jia,Liu, Mei,Zhou, Guanghong,Zhang, Xinxiao. 2018

[3]Characterization of Enterococcus durans 152 bacteriocins and their inhibition of Listeria monocytogenes in ham. Du, Lihui,Liu, Fang,Zhao, Ping,Zhao, Tong,Doyle, Michael P..

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[5]The lytic activity of recombinant phage lysin LysK Delta amidase against staphylococcal strains associated with bovine and human infections in the Jiangsu province of China. Zhou, Yan,Zhang, Hui,Bao, Hongduo,Wang, Ran,Wang, Xiaomeng.

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