Determination of the changes in the gastric fluid endurance of O157 and non-O157 Shiga toxin-producing Escherichia coli during storage of experimentally produced beef frankfurter

Simple item page
dc.contributor.authorBozatli S.B.
dc.contributor.authorDikici A.
dc.contributor.authorErgönül B.
dc.date.accessioned2024-07-22T08:05:36Z
dc.date.available2024-07-22T08:05:36Z
dc.date.issued2021
dc.description.abstractResistance of Shiga toxin-producing Escherichia coli (STEC) O157:H7 and serogroups O103, O26 and O145 to synthetic gastric fluid (SGF, pH 1.5) were investigated during frankfurter storage. Pathogens were inoculated (5 ± 1 log10cfu g−1) on frankfurters and frankfurters were stored at 4 °C for 75 days in vacuum packages. Population changes of the competitive flora and STEC, changes in the pH of the frankfurters and resistance of STEC to SGF were monitored on days 0, 15, 30, 45, 60 and 75 of frankfurter storage. Direct synthetic gastric fluid (DSGF) challenges were also conducted to assess pathogen resistance without being effected by frankfurters, by inoculating pathogen cultures directly into SGF. Results showed that acid resistance of O145 and O26 was stronger than that of O103 and O157 during frankfurter storage. Resistance of O103 to SGF was better than that of O157 during frankfurter storage but, was similar to that of O157 during DSGF challenges. Results indicate that acid resistance of some strains of STEC pathogens might differentiate during storage of frankfurters. Different resistance capabilities to SGF were observed in the STEC strains when inoculated and stored on frankfurters than directly inoculated in the SGF. © 2020, Association of Food Scientists & Technologists (India).
dc.identifier.DOI-ID10.1007/s13197-020-04812-9
dc.identifier.issn00221155
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13177
dc.language.isoEnglish
dc.publisherSpringer
dc.rightsAll Open Access; Bronze Open Access; Green Open Access
dc.subjectAcid resistance
dc.subjectEscherichia coli
dc.subjectPathogens
dc.subjectGastric fluids
dc.subjectIn-vacuum
dc.subjectPathogen resistance
dc.subjectPopulation change
dc.subjectSerogroups
dc.subjectShiga toxin-producing Escherichia coli
dc.subjectFood storage
dc.titleDetermination of the changes in the gastric fluid endurance of O157 and non-O157 Shiga toxin-producing Escherichia coli during storage of experimentally produced beef frankfurter
dc.typeArticle

Files

Collections

Scopus Koleksiyonu