Adaptation of O157:H7 and non-O157 Escherichia coli strains in orange juice and subsequent resistance to UV-C radiation

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorOteiza, Juan M.-
Autor(es): dc.creatorCaturla, Magdevis Y. R.-
Autor(es): dc.creatorPrado-Silva, Leonardo do-
Autor(es): dc.creatorCâmara, Antonio A.-
Autor(es): dc.creatorBarril, Patricia A.-
Autor(es): dc.creatorSant’Ana, Anderson S.-
Autor(es): dc.creatorGiannuzzi, Leda-
Autor(es): dc.creatorZaritzky, Noemi-
Data de aceite: dc.date.accessioned2026-02-09T12:26:13Z-
Data de disponibilização: dc.date.available2026-02-09T12:26:13Z-
Data de envio: dc.date.issued2022-09-01-
Data de envio: dc.date.issued2022-09-01-
Data de envio: dc.date.issued2022-03-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/54428-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0023643822000421-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1161297-
Descrição: dc.descriptionThis study assessed the acid-adaptation of pathogenic and non-pathogenic strains of Escherichia coli in orange juice and the microbial resistance to the subsequent UV-C radiation treatment. Nine Shiga toxin-producing E. coli (STEC) and one strain of a non-pathogenic surrogate E. coli were used in this study. Each E. coli strain was inoculated in orange juice, following pre-exposure during 0, 1, 2, and 3 h at 10 °C. Then, the inoculated juices with the ten different strains separately were exposed to 0 and 2 J/cm2 of UV-C radiation. The D value (i.e., the UV-C dose in J/cm2 required to cause a one-log reduction in the target microorganism) was calculated. Further, the resistance coefficient [RC; i.e., the ratio between the D-values for the control condition (D0h) and each pre-exposure tested time (D1h, D2h, D3h)] were determined. The results indicated that the resistance of E. coli was influenced by the pre-exposure period in the orange juice, with increased resistance to UV-C observed for periods >2 h. Furthermore, the sensitivity of cells to subsequent UV-C treatment was found to be strain-dependent. The results may allow the development of more reliable UV-C radiation processes for orange juice processing aiming the inactivation of pathogenic E. coli.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
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Palavras-chave: dc.subjectFoodborne pathogens-
Palavras-chave: dc.subjectFruit juices-
Palavras-chave: dc.subjectEmerging technologies-
Palavras-chave: dc.subjectAcid adaptation-
Palavras-chave: dc.subjectIrradiation-
Título: dc.titleAdaptation of O157:H7 and non-O157 Escherichia coli strains in orange juice and subsequent resistance to UV-C radiation-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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