Assessment of contamination of Salmonella spp. in imported black pepper and sesame seed and salmonella inactivation by gamma irradiation

  • Maria Cristina D'Oca | mariacristina.doca@unipa.it Department of Physics and Chemistry, University of Palermo, Italy.
  • Anna Maria Di Noto Experimental Zooprophylactic Institute of Palermo “A. Mirri", Italy.
  • Antonio Bartolotta Department of Physics and Chemistry, University of Palermo, Italy.
  • Aldo Parlato Department of Energy, Engineering of the information and Mathematical Models, University of Palermo, Italy.
  • Luisa Nicastro Experimental Zooprophylactic Institute of Palermo “A. Mirri", Italy.
  • Sonia Sciortino Experimental Zooprophylactic Institute of Palermo “A. Mirri", Italy.
  • Cinzia Cardamone Experimental Zooprophylactic Institute of Palermo “A. Mirri", Italy.

Abstract

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.

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Published
2021-04-07
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Original Articles
Keywords:
Food irradiation, Pepper and Sesame seed, Microbial quality, Salmonella
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How to Cite
1.
D’Oca MC, Di Noto AM, Bartolotta A, Parlato A, Nicastro L, Sciortino S, Cardamone C. Assessment of contamination of <em>Salmonella</em&gt; spp. in imported black pepper and sesame seed and salmonella inactivation by gamma irradiation. Ital J Food Safety [Internet]. 2021Apr.7 [cited 2021Apr.22];10(1). Available from: https://pagepressjournals.org/index.php/ijfs/article/view/8914