Effects of benzalkonium chloride and ethanol on dual-species biofilms of Serratia liquefaciens S1 and Shewanella putrefaciens S4

被引：24

作者：

Liu, Jingjing ^{[1
]}

Yu, Shuyue ^{[1
]}

Han, Beizhong ^{[1
]}

Chen, Jingyu ^{[1
]}

机构：

[1] China Agr Univ, Coll Food Sci & Nutr Engn, Beijing Lab Food Qual & Safety, Beijing 100083, Peoples R China

来源：

FOOD CONTROL | 2017年 / 78卷

基金：

中国国家自然科学基金;

关键词：

Dual-species biofilm; Chemical disinfection; Serratia liquefaciens S1; Shewanella putrefaciens S4; Raw-chicken-processing environment; LISTERIA-MONOCYTOGENES; PROCESSING ENVIRONMENT; PSEUDOMONAS-FLUORESCENS; ESCHERICHIA-COLI; BACILLUS-CEREUS; SALMONELLA; FOOD; INHIBITION; RESISTANCE; STRAINS;

D O I：

10.1016/j.foodcont.2017.02.063

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Biofilm formation on food-contact surfaces represents a significant risk to public health. To evaluate the effects of chemical disinfections on foodborne biofilms, Serratia liquefaciens S1 and Shewanella putrefadens S4, which were isolated from the same site in a raw-chicken-processing environment, were selected to establish a dual-species biofilm model. Two disinfectants, benzalkonium chloride (BC) and ethanol, were used to treat mono-species and dual-species biofilms formed by S. liquefaciens S1 and S. putrefaciens S4. The results show that the removal effect of ethanol on the biofilms was more significant than that of BC, but there was no significant difference between the two disinfectants on the killing effect. The S. liquefaciens 51 and S. putrefaciens S4 dual-species biofilms showed stronger resistance to disinfectants than the mono-species biofilms. Moreover, structural observation of biofilms indicates that the extra cellular polymeric substance (EPS) plays an important role in the protection of dual-species biofilm. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：196 / 202

页数：7

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