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Food Science and Biotechnology

, Volume 27, Issue 2, pp 607–615 | Cite as

Assessment of microbiological contamination in saengshik products from the Korean market and identification of the irradiation status

  • Gui-Ran Kim
  • Hafiz Muhammad Shahbaz
  • Hyun-Kyu Kyung
  • Joong-Ho Kwon
Article
  • 103 Downloads

Abstract

This study investigated the prevalence of microbiological contamination in commercial Saengshik products (samples SP-1 to SP-12) from the Korean market, and identified their irradiation status. SP-2, SP-8, and SP-12 showed less than 3.66 and 1.10 log colony forming units (CFU)/g in total plate and coliforms counts, respectively, while the remaining samples showed more than 4.70 and 2.35 log CFU/g, respectively. Four samples were positive on some of foodborne pathogenic bacteria (Clostridium perfringens, Escherichia coli O157:H7, and Bacillus cereus). SP-2, SP-8, and SP-12 contained no pathogenic bacteria and were suspected to have been irradiated. They were confirmed as positive using photostimulated luminescence (PSL) analysis. PSL positive results on samples SP-2, SP-8 and SP-12 were finally confirmed by the authentic thermoluminescence (TL) analysis on the basis of TL glow curve shape, intensity, temperature range of TL peak maxima and TL ratio (TL1/TL2).

Keywords

Saengshik Microbial safety Food irradiation Photostimulated luminescence Thermoluminescence 

Notes

Acknowledgements

This research did not receive any funding from public or private funding organization.

Compliance to ethical standards

Conflict of interest

The authors have no conflict of interest to declare.

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Copyright information

© The Korean Society of Food Science and Technology and Springer Science+Business Media B.V., part of Springer Nature 2017

Authors and Affiliations

  • Gui-Ran Kim
    • 1
  • Hafiz Muhammad Shahbaz
    • 3
  • Hyun-Kyu Kyung
    • 1
  • Joong-Ho Kwon
    • 1
    • 2
  1. 1.School of Food Science and BiotechnologyKyungpook National UniversityDaegu 41566Korea
  2. 2.Food and Bio-industry Research InstituteKyungpook National UniversityDaegu 41566Korea
  3. 3.Department of Food Science and Human NutritionUniversity of Veterinary and Animal SciencesLahore 54000Pakistan

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