Jamileh Pazooki; Faezeh Ghaffar Haddadi; Behrooz Abtahi
Volume 9, Issue 1 , October 2011
Abstract
Metal concentrations in commercial and non-commercial fish were surveyed to assess risks of fish consumption to human health and importantly, assess contamination in the food chain. In this study, lead (Pb), Zinc (Zn) and Copper (Cu) concentrations were determined in muscle and skin tissues of wild and ...
Read More
Metal concentrations in commercial and non-commercial fish were surveyed to assess risks of fish consumption to human health and importantly, assess contamination in the food chain. In this study, lead (Pb), Zinc (Zn) and Copper (Cu) concentrations were determined in muscle and skin tissues of wild and cultured Cyprinus carpio (common carp) from the southeastern Caspian Sea area and a nearby fish farm in November 2007. Metal concentrations were determined by atomic absorption. Pb and Cu concentrations in all of the samples were below detection limits and there were no statistically significant differences of Zn concentrations in muscle and skin tissue between wild and cultured carp. But Zn concentrations in the skin tissue were significantly higher than in muscle tissue in both groups; this suggests that more studies about skin tissue as a site of bioaccumulation are necessary. None of the concentrations exceeded WHO safety standards. Our results have suggested that heavy metal contents in carp are negligible and that its consumption should pose no health problems for consumers of either the wild or farmed fish.
Jamileh Pazooki,; Behrooz Abtahi; Farnaz Rezaei
Volume 7, Issue 1 , October 2009
Abstract
During this study, concentrations of Cd and Cr were determined in the muscle and skin of Lizaauratafrom Bandar Anzali. Forty-eight specimens (male:female ration of 24:24) were seined in October 2006 and their tissues were separated according to UNEP’s method (1984). Oven-dried and homogenized samples ...
Read More
During this study, concentrations of Cd and Cr were determined in the muscle and skin of Lizaauratafrom Bandar Anzali. Forty-eight specimens (male:female ration of 24:24) were seined in October 2006 and their tissues were separated according to UNEP’s method (1984). Oven-dried and homogenized samples were digested as per the standard method of AOAC (1995). Concentrations were determined using a flame atomic absorption spectrophotometer. The data analysis by a paired t-test showed significant differences between concentrations of Cd and Cr in the muscle and skin of Lizaaurata, with skin showing elevated metal levels. Linear regression analysis showed a significant negative relationship between fish size and the Cr levels in muscle. There was a significant increase in Cr and Cd levels in skin with increased size of the fish. Independent t-test analysis showed that average metal levels in the tissues of female fish were higher than in male fish. This study concludes that the concentrations of Cd and Cr in tissues of Lizaaurata are low and do not constitute a risk to human health.
Mojdeh Saeidi; Behrooz Abtahi; Mohammad Seddiq Mortazavi; Naser Aghajery; Mehdi Ghodrati Shojaeii
Volume 6, Issue 1 , October 2008
Abstract
Concentrations of zinc were determined in liver, muscle as an edible tissue and skin of a demersal fish, Spangled emperor (Lethrinus nebulosus) from fisheries stations in Bandar Abbas and Bandar Lengeh (Northern part of Persian Gulf) during autumn 2007 and spring 2008. After preparation of the samples ...
Read More
Concentrations of zinc were determined in liver, muscle as an edible tissue and skin of a demersal fish, Spangled emperor (Lethrinus nebulosus) from fisheries stations in Bandar Abbas and Bandar Lengeh (Northern part of Persian Gulf) during autumn 2007 and spring 2008. After preparation of the samples and digestion with microwave, concentrations of zinc were determined using Flameless Atomic Absorption Spectrophotometer (THERMO FS95). The mean of fish weights were 1320.7g (308-3054) and the mean Zn levels in the liver, muscle and skin of all samples were 0.326 (0.039-0.856), 0.084 (0.041-0.265) and 0.0228 (0.0011-0.0508) μg/g dry weight, respectively.The positive correlations between liver weight and concentrations of Znin the liver (μg/g dw) were observed (p<0.05).There were significant differences between concentrations of zinc in the skin in regions, moreover between concentrations of zinc in muscle and skin in seasons (p<0.05). The mean Zn in different tissues was less than those reported from other regions of the Persian Gulf (Qatar, Oman and UAE). Based on the results, the Zn content found in the studied fish samples is no sufficient to cause toxic effects on human health when these fish are included in the diet.
