Dépôt numérique
RECHERCHER

Antimicrobial effects of combined UV-C or gamma radiation with natural antimicrobial formulations against Listeria monocytogenes, Escherichia coli O157: H7, and total yeasts/molds in fresh cut cauliflower

Tawema, Pamphile; Han, Jaejoon; Vu, Khanh Dang; Salmieri, Stéphane; Lacroix, Monique (2016). Antimicrobial effects of combined UV-C or gamma radiation with natural antimicrobial formulations against Listeria monocytogenes, Escherichia coli O157: H7, and total yeasts/molds in fresh cut cauliflower LWT - Food Science and Technology , vol. 65 . p. 451-456. DOI: 10.1016/j.lwt.2015.08.016.

Ce document n'est pas hébergé sur EspaceINRS.

Résumé

The aim of this study was to investigate the utilization of low doses of UV-C (5 and 10 kJ/m2) and gamma irradiation (0.5 and 1 kGy) treatments combined with natural antimicrobial formulations (oregano or lemongrass essential oil plus citrus extract and lactic acid), to inhibit the growth of Listeria monocytogenes, Escherichia coli O157:H7, and total yeasts and molds, on cauliflower. Unlike the usual procedure for this type of combination, irradiation was applied before spraying of natural antimicrobial formulations with 5 ml per 100 g of cauliflower, because this approach had shown better long-term effectiveness. The combination of gamma irradiation at 1 kGy with natural antimicrobials reduced the population of L. monocytogenes as well as E. coli O157:H7 below the detection limits during the storage period. Yeasts and molds were significantly inhibited by gamma irradiation at both 0.5 and 1 kGy. The spraying of natural antimicrobial formulations following application of UV-C led to a significant inhibition of all target microorganisms.

Type de document: Article
Mots-clés libres: Food pathogens; Gamma irradiation; Natural antimicrobials; Shelf life; UV light; Diseases; Essential oils; Food preservation; Gamma rays; Irradiation; Lactic acid; Listeria; Microorganisms; Molds; Oils and fats; Pathogens; Radiation; Radiation effects; Ultraviolet radiation; Yeast; Anti-microbial effects; Escherichia coli O157:H7; Lemongrass essential oil; Listeria monocytogenes; Natural-antimicrobials; Escherichia coli
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 06 oct. 2017 14:25
Dernière modification: 06 oct. 2017 14:25
URI: http://espace.inrs.ca/id/eprint/4589

Actions (Identification requise)

Modifier la notice Modifier la notice