Effects of Sublethal Thymol, Carvacrol, and trans -Cinnamaldehyde Adaptation on Virulence Properties of Escherichia coli O157:H7 | Zendy

Wenqian Yuan | Zendy; HyunGyun Yuk | Zendy

Open Access

Effects of Sublethal Thymol, Carvacrol, and trans -Cinnamaldehyde Adaptation on Virulence Properties of Escherichia coli O157:H7

Author(s) -

Wenqian Yuan,

HyunGyun Yuk

Publication year - 2019

Publication title -

applied and environmental microbiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.552

H-Index - 324

eISSN - 1070-6291

pISSN - 0099-2240

DOI - 10.1128/aem.00271-19

Subject(s) - virulence , carvacrol , escherichia coli , biofilm , microbiology and biotechnology , biology , efflux , thymol , virulence factor , bacteria , gene , food science , genetics , antimicrobial , essential oil

The present study was conducted to evaluate changes in virulence properties inEscherichia coli O157:H7 adapted to sublethal essential oils (EOs). The results demonstrated reduced motility, biofilm-forming ability, and efflux pump activities in EO-adaptedE. coli O157:H7, with no induction of antibiotic resistance or infection (adhesion and invasion) on Caco-2 cells. Reverse transcription-quantitative PCR results revealed changes in the expression of related virulence genes. Thus, the present study provides new insights into microbial virulence behavior following EO adaptation and suggests that Thy, Car, and TC sublethal exposure did not constitute a significant risk in inducing microbial virulence.

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