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The influence of MAP condition and active compounds on the radiosensitization of Escherichia coli and Salmonella typhi present in chicken breast

Monique Lacroix 1, * F. Chiasson 1
* Corresponding author
Abstract : The efficiency of carvacrol, thymol, trans-cinnamaldehyde (Tc) and tetrasodium pyrophosphate (Tp) on the radiosensitization of Escherichia coli and Salmonella typhi in chicken breast was determined. Chicken breast were dipped in a bath of working cultures of E. coli or S. typhi (5×107 CFU/ml). Active compounds were added at the concentration corresponding to of the minimal inhibitory concentration. Samples were packed under air and gamma irradiation was done at doses from 0.1 to 0.7 kGy. The efficiencies of the active compounds against E. coli were 32%, 10%, 3% and 0% for thymol, Tp and carvacrol, respectively. For S. typhi, the efficiencies in the chicken breast were 47%, 19%, 17% and 11% for Tc, Tp, carvacrol and thymol, respectively. Without active compounds, D10 values were 0.145 kGy for E. coli and 0.64 kGy for S. typhi as compared to 0.098 kGy for E. coli and 0.341 kGy for S. typhi in presence of Tc. Under modified atmospheric packaging condition and in presence of Tc, D10 values were reduced to 0.046 for E. coli and to 0.110 for S. typhi.
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https://hal-riip.archives-ouvertes.fr/pasteur-00820049
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Submitted on : Friday, May 3, 2013 - 4:49:50 AM
Last modification on : Monday, October 8, 2018 - 5:44:04 PM

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Monique Lacroix, F. Chiasson. The influence of MAP condition and active compounds on the radiosensitization of Escherichia coli and Salmonella typhi present in chicken breast. Radiation Physics and Chemistry, Elsevier, 2004, 71 (1-2), pp.69-72. ⟨10.1016/j.radphyschem.2004.04.059⟩. ⟨pasteur-00820049⟩

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