Determination of Heavy Metal Levels and Assessment of L. monocytogenes and Salmonella spp. Presence in Fishery Products and Mussels from the Marmara Region, Türkiye

Esra Akkaya, Karlo Muratoglu, Duygu Tarhan, Nural Pastaci Ozsobaci, Alev Meltem Ercan, Hilal Colak, Hamparsun Hampikyan, Enver Baris Bingol, Mehmet Erman Or, Egon Andoni, Enkeleda Ozuni, Marco Gobbi, Linda Petrucci, Federica Di Cesare, Petra Cagnardi, Giulio Curone, Claudia Maria Balzaretti, Valerio Giaccone, Marta Castrica

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This study evaluated heavy metal levels (Pb, Cd, Hg, As, Cu) and the presence of Salmonella spp. and Listeria monocytogenes in mussels and commonly consumed fishery products from the Marmara region of Türkiye. Health risks were evaluated using total hazard quotient (THQ) and hazard index (HI) values, while microbial risks in fresh and ready-to-eat (RTE) products were estimated via the Risk Ranger tool. Among 625 samples, Hg (36.96%; CI95 = 33.27–48.81), Pb (9.76%; CI95 = 7.67–12.34), and Cd (19.36%; CI95 = 16.45–22.64) exceeded permissible limits, except in crabs, which remained compliant. Anchovy, sardines, bluefish, shrimps, and octopus met EU Cd limits. Shrimps exhibited higher Asin levels than crabs (p < 0.05), while squids had significantly higher Asin than octopus but lower Pb (p < 0.05). Microbiological analysis detected Salmonella spp. in 4.00% of samples (CI95 = 2.50–6.30) and L. monocytogenes in 4.24% (CI95 = 2.70–6.59). Surmullet, bluefish, red mullet, crabs, mussels, and octopus tested negative for both, while anchovy was negative for Salmonella spp. only. THQ and HI assessments emphasized the need for environmental monitoring to mitigate heavy metal contamination. The detection of pathogens highlights the importance of stringent surveillance measures to ensure the safety of fishery products and bivalves.

Original languageEnglish
Article number153
JournalToxics
Volume13
Issue number3
DOIs
Publication statusPublished - Mar 2025

Keywords

  • HI
  • ICP-OES
  • THQ
  • heavy metal
  • pathogenic microorganism
  • risk ranger

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