info:eu-repo/semantics/article
Identification of the gamma irradiation dose applied to ground beef that reduces Shiga toxin producing Escherichia coli but has no impact on consumer acceptance
Fecha
2021-04Registro en:
Cap, Mariana; Lires, Carla Maria Laura; Cingolani, Celeste; Mozgovoj, Marina Valeria; Soteras, Trinidad; et al.; Identification of the gamma irradiation dose applied to ground beef that reduces Shiga toxin producing Escherichia coli but has no impact on consumer acceptance; Elsevier; Meat Science; 174; 108414; 4-2021; 1-5
0309-1740
CONICET Digital
CONICET
Autor
Cap, Mariana
Lires, Carla Maria Laura
Cingolani, Celeste
Mozgovoj, Marina Valeria
Soteras, Trinidad
Gentiluomo, Jimena
Principe, F.
Sucari, Adriana
Horak, Celina Ines
Signorini Porchietto, Marcelo Lisandro
Vaudagna, Sergio Ramon
Leotta, Gerardo Anibal
Resumen
The aims of the present study were: a) to estimate the minimal dose of gamma irradiation required to reduce 5 log CFU/g of native O157 and non-O157 Shiga toxin-producing Escherichia coli population in ground beef samples inoculated with high inoculum; b) to assess its effectiveness in samples with low inoculum and 3) to evaluate consumer acceptance. Based on the results, 1 kGy was estimated as the minimal dose of gamma irradiation required to reduce 5 log CFU/g of STEC in ground beef. However, when samples with low inoculum level were subjected to 1 kGy, 3.9% of the samples were positive for stx and eae genes after an enrichment step. Consumer acceptance analysis was carried out with samples subjected to 2.5 kGy and no significant differences were found between irradiated and control samples. Therefore, 2.5 kGy was identified as the gama irradiation dose that reduces STEC but has no impact on consumer acceptance of ground beef.