Turgis, Melanie; Millette, Mathieu; Salmieri, Stephane et Lacroix, Monique 
ORCID: https://orcid.org/0000-0002-2042-4033
(2012).
Elimination of Listeria inoculated in ready-to-eat carrots by combination of antimicrobial coating and γ-irradiation
Radiation Physics and Chemistry
, vol. 81
, nº 8.
pp. 1170-1172.
DOI: 10.1016/j.radphyschem.2011.11.023.
Résumé
A combined treatment of an edible coating composed of trans-cinnamaldehyde (TCN; 0.5% p/p) with γ-irradn. was investigated against Listeria inoculated in peeled mini-carrots. First, the D10 value (γ-irradn. dose required to eliminate 90% of the bacterial population) of TCN was evaluated under air. This treatment resulted in a 3.66-fold increase in relative bacterial radiosensitivity (RBR) as compared to the control without antimicrobial coating. Secondly, the shelf life of mini-carrots during 21 day of storage at 4 °C was studied. Antimicrobial coating contg. TCN was assayed in combination with two irradn. doses (0.25 and 0.5 kGy). Results suggested that the inactive coating did not have any antimicrobial effect against Listeria while the coating contg. TCN resulted in a 1.29 log redn. in carrots packed under air after 21 days of storage. Hence, these observations indicated that the combination of irradn. with antimicrobial coating played an important role in enhancing the radiosensitization of Listeria to γ-irradn.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | γ-irradiation; Antimicrobial; Listeria; Food preservation; Trans-cinnamaldehyde |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 09 mars 2024 21:38 |
| Dernière modification: | 09 mars 2024 21:38 |
| URI: | https://espace.inrs.ca/id/eprint/14099 |
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