Effect of gamma irradiation (Co60) in the control of Campylobacter spp. in chilled chicken (Gallus gallus) heart.
Marta Maria Braga Baptista Soares Xavier - Robson Maia Franco - Ana Beatriz Monteiro Fonseca - Edgar Francisco Oliveira de Jesus - Mauro Carlos Lopes Souza - Sheila da Silva Duque - Wagner Thadeu Cardoso Esteves.
- Article Number - 779255D61347
- Vol.10(40), pp. 1715-1719 , October 2016
- African Journal of Microbiology Research
- The present study aimed to evaluate the efficiency of the irradiation process in the control of
Campylobacter spp. in chilled chicken heart samples, since this microorganism is related to the
contamination of meat and chicken giblets and is responsible for enteritis in humans. The methodology
and standards recommended by RDC no. 12 (Brazil, 2001) were applied for the bacteriological analyses.
The chilled chicken heart samples were acquired in an industry that undergoes sanitary inspection,
located in the West Zone of Rio de Janeiro. Samples were divided into two groups, non-contaminated
(NC - originally from the industrial plant) and contaminated (CAMPY– contaminated with C. jejuni ATCC
33291/CCAMP/FIOCRUZ 00262 strains by CCAMP/LABZOO/IOC/FIOCRUZ), subsequently separated into
four groups: NC and CAMPY control groups and samples irradiated at 1.5, 3.0 and 4.5 kGy. The eight
subgroups were analyzed for the presence of Campylobacter spp. No statistically significant difference
was observed between the four groups namely the non-irradiated controls and the 1.5, 3.0 and 4.5 kGy
irradiated samples (p> 0.05). Elimination of Campylobacter spp. was observed, with no bacterial growth
in any of the irradiated, non-contaminated (CN) and infected (CAMPY) samples. Thus, the efficiency of
the Co60 irradiation process of chilled chicken heart for the elimination of the surveyed microorganisms
was proven. The lowest dose applied was sufficient to eliminate the enteric pathogen which is of great
significance in a public health point of view. However, it should be noted that the Brazil legislation
determining the microbiological standards for food does not include a microbiological standard for
Campylobacter spp. This means that any amount of this enteric pathogen may bring public health risks.
- African Journal of Microbiology Research
- The present study aimed to evaluate the efficiency of the irradiation process in the control of Campylobacter spp. in chilled chicken heart samples, since this microorganism is related to the contamination of meat and chicken giblets and is responsible for enteritis in humans. The methodology and standards recommended by RDC no. 12 (Brazil, 2001) were applied for the bacteriological analyses. The chilled chicken heart samples were acquired in an industry that undergoes sanitary inspection, located in the West Zone of Rio de Janeiro. Samples were divided into two groups, non-contaminated (NC - originally from the industrial plant) and contaminated (CAMPY– contaminated with C. jejuni ATCC 33291/CCAMP/FIOCRUZ 00262 strains by CCAMP/LABZOO/IOC/FIOCRUZ), subsequently separated into four groups: NC and CAMPY control groups and samples irradiated at 1.5, 3.0 and 4.5 kGy. The eight subgroups were analyzed for the presence of Campylobacter spp. No statistically significant difference was observed between the four groups namely the non-irradiated controls and the 1.5, 3.0 and 4.5 kGy irradiated samples (p> 0.05). Elimination of Campylobacter spp. was observed, with no bacterial growth in any of the irradiated, non-contaminated (CN) and infected (CAMPY) samples. Thus, the efficiency of the Co60 irradiation process of chilled chicken heart for the elimination of the surveyed microorganisms was proven. The lowest dose applied was sufficient to eliminate the enteric pathogen which is of great significance in a public health point of view. However, it should be noted that the Brazil legislation determining the microbiological standards for food does not include a microbiological standard for Campylobacter spp. This means that any amount of this enteric pathogen may bring public health risks.
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