Survie de Listeria innocua, Salmonella salford et Escherichia coli sur la surface des fruits à peau non comestible.
Survival of Listeria innocua, Salmonella salford and Escherichia coli on the surface of fruit with inedible skins.
Auteurs : BEHRSING J., JAEGER J., HORLOCK F., et al.
Type d'article : Article
Résumé
The survival and growth of Salmonella salford, Escherichia coli and Listeria innocua on the surface of fruit with inedible skins was investigated. Passionfruit, banana, cantaloupe (rock melon) and honeydew melon were inoculated by immersion in solutions containing two inoculum levels and then stored under normal storage and distribution temperature regimes. A low and high inoculum concentration was used for each organism. Bananas were stored for 13 days at 18 °C, passionfruit for 6 days at 10 °C, cantaloupes for 7 days at 8 °C and honeydew melons for 1 day at 12 °C then 5 days at 8 °C. Generally, the fruit did not support growth under the conditions employed, although test organisms could usually be recovered either directly or after an enrichment step. The exception was L. innocua on the skin of cantaloupe. Significant growth was observed for both the low and high inoculum levels during storage at 8 °C. For the low inoculum, levels that could only be detected by enrichment initially increased to 1.4×102 cfu cm-2.
Détails
- Titre original : Survival of Listeria innocua, Salmonella salford and Escherichia coli on the surface of fruit with inedible skins.
- Identifiant de la fiche : 2004-1812
- Langues : Anglais
- Source : Postharvest Biol. Technol. - vol. 29 - n. 3
- Date d'édition : 09/2003
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