Levels of heavy metals, total petroleum hydrocarbons, and microbial load in commercially valuable fish from the marine a
- PDF / 368,808 Bytes
- 13 Pages / 547.087 x 737.008 pts Page_size
- 111 Downloads / 245 Views
Levels of heavy metals, total petroleum hydrocarbons, and microbial load in commercially valuable fish from the marine area of Tripoli, Lebanon Nazek Jisr & Ghassan Younes & Khaled El Omari & Monzer Hamze & Carol Sukhn & Mohammad H. El-Dakdouki
Received: 6 July 2020 / Accepted: 11 October 2020 # Springer Nature Switzerland AG 2020
Abstract The present study aimed at evaluating the levels of microbiological contamination, total petroleum hydrocarbons (TPHs), and heavy metals (As, Cd, Hg, and Pb) in the edible tissues of commonly consumed fish (8 species) collected from the marine area of Tripoli, Northern Lebanon. Total coliform levels in all sampled fish, and Escherichia coli levels in Liza ramada only, exceeded the permissible limits set by FAO/WHO 2002. Staphylococcus aureus counts were within the recommended thresholds, while sulfate-reducing bacteria levels were the highest in fish of the genus Liza. Salmonella species and Listeria monocytogenes were not detected in all fish analyzed. Analysis of heavy metals levels showed that arsenic exhibited the highest levels among the assessed metals in all genera. Levels of As in Epinephelus, Diplodus, Oblada, and Liza were above the acceptable limits, while Cd levels were below the
permissible limits set by the European Commission. Significant negative correlation was found between levels of As and Hg in muscle tissues and fish size (length). Levels of TPHs were the highest in fish of the genus Epinephelus. Significant difference in TPHs contamination was found within three fish genera, with Epinephelus being the most contaminated. Keywords Muscle tissue . Bioaccumulation . THP . Fat content . Cancer risk
Introduction Fish are vital constituent of the human diet because of its high nutritional value and health benefits. The worldwide demand for seafood consumption has increased
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10661-020-08672-w) contains supplementary material, which is available to authorized users. N. Jisr Department of Biological Sciences, Beirut Arab University, P. O. Box 11-5020, Riad El Solh 11072809, Beirut, Lebanon G. Younes : M. H. El-Dakdouki (*) Department of Chemistry, Beirut Arab University, P.O. Box 11-5020, Riad El Solh 11072809, Beirut, Lebanon e-mail: [email protected] K. El Omari Quality Control Laboratory, Chamber of Commerce, Industry, and Agriculture of Tripoli and North Lebanon, Tripoli, Lebanon
K. El Omari : M. Hamze Laboratoire Microbiologie Santé et Environnement (LMSE), Ecole Doctorale des Sciences et de Technologie, Faculté de Santé Publique, Lebanese University, Tripoli, Lebanon C. Sukhn Department of Pathology and Laboratory Medicine, American University of Lebanon, Beirut, Lebanon
705
Page 2 of 13
following the improvement of living standards and the increased awareness about the health benefits of seafood consumption (He et al. 2010). The continuously growing global demand for marine resources necessitates the enforcement of two fundamental management strategies.
Data Loading...
