Survival of antibiotic resistant and antibiotic sensitive strains of E. coli O157 and E. coli O26 in food matrices

International Journal of Food Microbiology
G DuffyD A McDowell

Abstract

Escherichia coli O157:H7 or E. coli O26, which were AS (antibiotic sensitive), AR (laboratory created antibiotic resistant mutants), or naturally MAR (multi-antibiotic resistant), were inoculated into laboratory media, yoghurt or orange juice and their growth/survival monitored during enrichment at 37 degrees C or storage at 4 degrees C. The strains were also inoculated into minced beef and their thermal inactivation (D-values) examined at 55 degrees C, with and without a prior heat shock at 48 degrees C. The growth kinetics (lag phases, growth rates) of the VTEC (verocytotoxigenic E. coli), incubated over 24 h at 37 degrees C in laboratory media, were similar regardless of the presence or absence of antibiotic resistance. In yoghurt and orange juice, E. coli O157:H7 MAR died off significantly faster (P<0.05) than any of other VTEC strains examined. E. coli O157:H7 MAR was also found to be significantly more heat sensitive (P<0.05) than the other VTEC strains tested. The reasons for the observed differences in survival of the different VTEC strains and the link between antibiotic resistance and survival in VTEC organisms are discussed.

References

Dec 1, 1994·International Journal of Food Microbiology·C D Blackburn, A R Davies
Apr 15, 1997·International Journal of Food Microbiology·V K JunejaB S Marmer
Feb 2, 2002·Applied and Environmental Microbiology·Carl M SchroederJianghong Meng
Oct 22, 2002·Journal of the American Veterinary Medical Association·Susan SanchezMichael P Doyle
Jun 18, 2003·International Journal of Food Microbiology·Carl M SchroederJianghong Meng
Apr 22, 2004·Nature Reviews. Microbiology·Barry G Hall
Nov 6, 2004·Applied and Environmental Microbiology·Lisa M DursoRobert W Hutkins
Apr 22, 2006·International Journal of Food Microbiology·C WalshD A McDowell

❮ Previous
Next ❯

Citations

Jan 1, 2008·Meat Science·G DuffyC Cagney
Feb 6, 2017·International Journal of Food Microbiology·Norton KomoraPaula Teixeira
Dec 6, 2012·Journal of Food Protection·James L Smith, Pina M Fratamico
Nov 1, 2007·Journal of Food Protection·Marilyn C Erickson, Michael P Doyle
Feb 22, 2017·Journal of Food Protection·Amie M Jones-IbarraT Matthew Taylor

❮ Previous
Next ❯

Related Concepts

Related Feeds

Aminoglycosides

Aminoglycoside is a medicinal and bacteriologic category of traditional Gram-negative antibacterial medications that inhibit protein synthesis and contain as a portion of the molecule an amino-modified glycoside. Discover the latest research on aminoglycoside here.

BioHub - Researcher Network

The Chan-Zuckerberg Biohub aims to support the fundamental research and develop the technologies that will enable physicians to cure, prevent, or manage all diseases in our childrens' lifetimes. The CZ Biohub brings together researchers from UC Berkeley, Stanford, and UCSF. Find the latest research from the CZ Biohub researcher network here.

Aminoglycosides (ASM)

Aminoglycoside is a medicinal and bacteriologic category of traditional Gram-negative antibacterial medications that inhibit protein synthesis and contain as a portion of the molecule an amino-modified glycoside. Discover the latest research on aminoglycoside here.

Antimicrobial Resistance (ASM)

Antimicrobial resistance poses a significant threat to the continued successful use of antimicrobial agents for the treatment of bacterial infections.

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antimicrobial Resistance

Antimicrobial resistance poses a significant threat to the continued successful use of antimicrobial agents for the treatment of bacterial infections.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.