Lacroix, Monique 
ORCID: https://orcid.org/0000-0002-2042-4033 et Lafortune, Roxanne
(2004).
Combined effects of gamma irradiation and modified atmosphere packaging on bacterial resistance in grated carrots (Daucus carota)
Radiation Physics and Chemistry
, vol. 71
, nº 1-2.
pp. 77-80.
DOI: 10.1016/j.radphyschem.2004.04.055.
Résumé
The present study was conducted to evaluate the efficiency of gamma irradiation combined with modified atmosphere packaging as an alternative treatment to ensure the innocuity and the shelf life extension of pre-cured vegetables. Grated carrots were inoculated with Escherichia coli (10 6CFU/g) and packed under air or under MAP condition (60% O 2, 30% CO2 and 10% N2). The packages were then, gamma irradiated at doses from 0.15 to 0.9kGy and stored at 4±1°C. E. coli counts were periodically evaluated during 50 days of storage. Results showed that at day 1, an irradiation treatment at a dose of 0.15kGy reduced by 3 and 4 log the microbial level representing a level of 3 and 2 logCFU/g when samples were irradiated under air and under MAP respectively. However, a level of 3 log CFU/g was detected in both treated samples after 7 days of storage. When samples were irradiated at doses ≥0.3kGy no E.coli were detected during the whole storage in samples treated under MAP. However, when samples were treated under air, a level of 1-2 log CFU/g of E.coli was detected after 5 days of storage.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | Irradiation; Grated carrots; E. coli; MAP |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 15 nov. 2024 20:30 |
| Dernière modification: | 15 nov. 2024 20:30 |
| URI: | https://espace.inrs.ca/id/eprint/14827 |
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