Open AccessAssessment of contamination of Salmonella spp. in imported black pepper and sesame seed and salmonella inactivation by gamma irradiation
Author(s) -
Maria Cristina D’Oca,
A.M. Di Noto,
A. Bartolotta,
Aldo Parlato,
Luisa Nicastro,
Sonia Sciortino,
Cinzia Cardamone
Publication year - 2021
Publication title -
italian journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.359
H-Index - 13
ISSN - 2239-7132
DOI - 10.4081/ijfs.2021.8914
Subject(s) - pepper , salmonella , contamination , gamma irradiation , serotype , biology , food science , veterinary medicine , irradiation , microbiology and biotechnology , medicine , bacteria , physics , ecology , genetics , nuclear physics
This study shows the frequency of seeds samples contaminated by Salmonella spp. collected randomly from local markets; on 30 black pepper sample no contaminated sample was found while Salmonella spp. was detected in 3 of 36 (8.3%) analyzed sesame samples; three different serotypes were identified: S. Montevideo, S. Stanleyville e S. Tilene. The efficacy of gamma irradiation to inactivate Salmonella Montevideo in black pepper and sesame irradiated between 1 and 5 kGy was evaluated. 3 kGy is sufficient to reduce of 3-4 log CFU/g; whereas 5 kGy have been need to reduce 5.5-6 log CFU/g for samples of black pepper and sesame. No statistically significant differences were found between black pepper and sesame.