Biofilm Formation Ability of Escherichia coli O157:H7 on Stainless Steel Surface and Its Relationship with Bacterial Characteristics

doi:10.7506/spkx1002-6630-20190912-154

FOOD SCIENCE ›› 2020, Vol. 41 ›› Issue (22): 127-132.doi: 10.7506/spkx1002-6630-20190912-154

• Bioengineering • Previous Articles Next Articles

Biofilm Formation Ability of Escherichia coli O157:H7 on Stainless Steel Surface and Its Relationship with Bacterial Characteristics

WU Lina, DONG Pengcheng, ZHANG Yimin, MAO Yanwei, LIANG Rongrong, YANG Xiaoyin, ZHU Lixian, LUO Xin

(1. College of Food Science and Engineering, Shandong Agricultural University, Tai’an 271018, China;2. Jiangsu Collaborative Innovation Center of Meat Production and Processing, Nanjing 210095, China)

Online:2020-11-25 Published:2020-11-26

Abstract

Abstract: This study aimed to investigate the effect of two different media: tryptic soy broth (TSB) and beef extract (BE) on the biofilm formation ability of Escherichia coli O157:H7 on a stainless steel surface and the correlation between the biofilm formation ability and the bacterial characteristics. The results showed biofilm formation capability was significantly influenced by interactions among the strain, the media used, and incubation time (P < 0.05). Significant differences in cell surface hydrophobicity, autoaggregation ability and motility were observed among the strains tested (P < 0.05). Biofilm formation ability was significantly positively correlated with swarming motility upon culture in TSB (P < 0.05) while it was significantly positively correlated with hydrophobicity (P < 0.05) upon culture in BE. In addition, there was no correlation of the biofilm formation ability between two culture media of the strains. In conclusion, this study provides useful information for developing effective biofilm removal techniques to control the hazard of E. coli O157:H7 biofilms in the beef industry.

Key words: Escherichia coli O157:H7; biofilm; strain characteristics; stainless steel

CLC Number:

TS251.5

WU Lina, DONG Pengcheng, ZHANG Yimin, MAO Yanwei, LIANG Rongrong, YANG Xiaoyin, ZHU Lixian, LUO Xin. Biofilm Formation Ability of Escherichia coli O157:H7 on Stainless Steel Surface and Its Relationship with Bacterial Characteristics[J]. FOOD SCIENCE, 2020, 41(22): 127-132.

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Biofilm Formation Ability of Escherichia coli O157:H7 on Stainless Steel Surface and Its Relationship with Bacterial Characteristics

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