Pediococcus Acidilactici Inhibit Biofilm Formation of Food-Borne Pathogens on Abiotic Surfaces  

作　　者：Xiqian Tan Ye Han Huazhi Xiao Zhijiang Zhou 

机构地区：[1]School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

出　　处：《Transactions of Tianjin University》2017年第1期70-77,共8页天津大学学报（英文版）

基　　金：Supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2015BAD16B01);Tianjin Key Technology Research and Development Support Program (13ZCDNC01900)

摘　　要：In this study, we aimed to examine the inhibitory effect of PA003, a Pediococcus acidilactici that produces lactic acid and antimicrobial peptides pediocin, on pathogenic biofilm formation on abiotic surfaces. PA003 and pathogens (Escherichia coli, Salmonella enterica serovar Typhimurium, Staphylococcus aureus and Listeria monocytogenes) were used to evaluate auto-aggregation, hydrophobicity, biofilm formation and biofilm formation inhibition on stainless steel, polyvinyl chloride and glass slides in terms of exclusion, displacement and competition. The results showed the highest auto-aggregation abilities were observed for one of the E. coli strains EAggEC (E58595) and the highest hydrophobic strain was observed with EPEC (E2348/69) (51.9%). The numbers of biofilm cells of E. coli, S. Typhimurium, S. aureus and L. monocytogenes on stainless steel, polyvinyl chloride and glass slide coupons were effectively reduced by approximately 4 log CFU/coupon. These results demonstrate that lactic acid bacteria can be used as an alternative to effectively control the formation of biofilms by food-borne pathogens. © 2016, Tianjin University and Springer-Verlag Berlin Heidelberg.In this study,we aimed to examine the inhibitory effect of PA003,a Pediococcus acidilactici that produces lactic acid and antimicrobial peptides pediocin,on pathogenic biofilm formation on abiotic surfaces.PA003 and pathogens(Escherichia coli,Salmonella enterica serovar Typhimurium,Staphylococcus aureus and Listeria monocytogenes) were used to evaluate auto-aggregation,hydrophobicity,biofilm formation and biofilm formation inhibition on stainless steel,polyvinyl chloride and glass slides in terms of exclusion,displacement and competition.The results showed the highest auto-aggregation abilities were observed for one of the E.coli strains EAggEC(E58595) and the highest hydrophobic strain was observed with EPEC(E2348/69)(51.9%).The numbers of biofilm cells of E.coli,S.Typhimurium,S.aureus and L.monocytogenes on stainless steel,polyvinyl chloride and glass slide coupons were effectively reduced by approximately 4log CFU/coupon.These results demonstrate that lactic acid bacteria can be used as an alternative to effectively control the formation of biofilms by food-borne pathogens.

关 键 词：Bacteria Biofilms Enzyme inhibition Escherichia coli Glass HYDROPHOBICITY Lactic acid LISTERIA PATHOGENS POLYPEPTIDES Polyvinyl chlorides SALMONELLA Stainless steel Strain 

分 类 号：R378[医药卫生—病原生物学]