Limits...
Determination of cadmium, lead and mercury residual levels in meat of canned light tuna (Katsuwonus pelamis and Thunnus albacares) and fresh little tunny (Euthynnus alletteratus) in Libya.

Abolghait SK, Garbaj AM - Open Vet J (2015)

Bottom Line: Surveillance for mercury (Hg), lead (Pb) and cadmium (Cd) contamination in tuna products is crucial for consumer food safety.The results indicated that Hg had the highest concentration level and Cd had the lowest concentration level either in tested canned tuna or fresh little tunny samples.Results of the current surveillance indicated that canned skipjack and yellowfin tuna sold in Tripoli markets show contaminant levels well under the European thresholds adopted for Cd, Pb and Hg.

View Article: PubMed Central - PubMed

Affiliation: Department of Food Hygiene and Control, Faculty of Veterinary Medicine, University of Tripoli, P. O. Box 13662, Tripoli, Libya ; Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Suez Canal University, 41522 Ismailia, Egypt.

ABSTRACT
Surveillance for mercury (Hg), lead (Pb) and cadmium (Cd) contamination in tuna products is crucial for consumer food safety. Hg, Pb and Cd contaminants were monitored in a total of 60 specimens of fresh little tunny (Euthynnus alletteratus) and popular brands of skipjack and yellowfin (Katsuwonus pelamis and Thunnus albacares) canned tuna commercially available in Tripoli, Libya. Direct Mercury Analyzer (DMA-80) was implemented for determination of total Hg level and graphite furnace atomic absorption spectrometry (GFAAS) was employed for determination of Cd and Pb concentrations. The results indicated that Hg had the highest concentration level and Cd had the lowest concentration level either in tested canned tuna or fresh little tunny samples. The average concentration of Hg in fresh little tunny samples was 1.185 ± 0.968 mg kg(-1) wet weight (ww) and often exceeded the standard permissible limit. In addition, canned yellowfin tuna had the lowest levels of Cd (0.027 ± 0.026 mg kg(-1) ww), Pb (0.075 ± 0.071) and Hg (0.163 ± 0.122 mg kg(-1) ww). Results of the current surveillance indicated that canned skipjack and yellowfin tuna sold in Tripoli markets show contaminant levels well under the European thresholds adopted for Cd, Pb and Hg. However, consumption of large quantities of Mediterranean little tunny products significantly increases human exposure to the risk of Hg toxicity.

No MeSH data available.


Related in: MedlinePlus

Graphical representation of box blots show data sets distribution of Cd, Pb and Hg levels in tested tuna samples. Whiskers represent lower and upper quartiles; Cross band inside the box indicates median, the boxes represent the interquartile range, which covers the central 50% of the data. Open circle indicates outlier data. 95% confidence interval.
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Figure 2: Graphical representation of box blots show data sets distribution of Cd, Pb and Hg levels in tested tuna samples. Whiskers represent lower and upper quartiles; Cross band inside the box indicates median, the boxes represent the interquartile range, which covers the central 50% of the data. Open circle indicates outlier data. 95% confidence interval.

Mentions: The maximum range of Cd in the examined fresh little tunny and canned skipjack samples was 0.11 and 0.19 mg kg-1 ww, respectively (Table 1). Among tested samples, only 5% of fresh little tunny and 30% of canned skipjack specimens were barely surpassing the maximum level (0.1 mg kg-1 ww) adopted for Cd in tuna (European-Commission, 2006) (Fig. 2).


Determination of cadmium, lead and mercury residual levels in meat of canned light tuna (Katsuwonus pelamis and Thunnus albacares) and fresh little tunny (Euthynnus alletteratus) in Libya.

Abolghait SK, Garbaj AM - Open Vet J (2015)

Graphical representation of box blots show data sets distribution of Cd, Pb and Hg levels in tested tuna samples. Whiskers represent lower and upper quartiles; Cross band inside the box indicates median, the boxes represent the interquartile range, which covers the central 50% of the data. Open circle indicates outlier data. 95% confidence interval.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4663797&req=5

Figure 2: Graphical representation of box blots show data sets distribution of Cd, Pb and Hg levels in tested tuna samples. Whiskers represent lower and upper quartiles; Cross band inside the box indicates median, the boxes represent the interquartile range, which covers the central 50% of the data. Open circle indicates outlier data. 95% confidence interval.
Mentions: The maximum range of Cd in the examined fresh little tunny and canned skipjack samples was 0.11 and 0.19 mg kg-1 ww, respectively (Table 1). Among tested samples, only 5% of fresh little tunny and 30% of canned skipjack specimens were barely surpassing the maximum level (0.1 mg kg-1 ww) adopted for Cd in tuna (European-Commission, 2006) (Fig. 2).

Bottom Line: Surveillance for mercury (Hg), lead (Pb) and cadmium (Cd) contamination in tuna products is crucial for consumer food safety.The results indicated that Hg had the highest concentration level and Cd had the lowest concentration level either in tested canned tuna or fresh little tunny samples.Results of the current surveillance indicated that canned skipjack and yellowfin tuna sold in Tripoli markets show contaminant levels well under the European thresholds adopted for Cd, Pb and Hg.

View Article: PubMed Central - PubMed

Affiliation: Department of Food Hygiene and Control, Faculty of Veterinary Medicine, University of Tripoli, P. O. Box 13662, Tripoli, Libya ; Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Suez Canal University, 41522 Ismailia, Egypt.

ABSTRACT
Surveillance for mercury (Hg), lead (Pb) and cadmium (Cd) contamination in tuna products is crucial for consumer food safety. Hg, Pb and Cd contaminants were monitored in a total of 60 specimens of fresh little tunny (Euthynnus alletteratus) and popular brands of skipjack and yellowfin (Katsuwonus pelamis and Thunnus albacares) canned tuna commercially available in Tripoli, Libya. Direct Mercury Analyzer (DMA-80) was implemented for determination of total Hg level and graphite furnace atomic absorption spectrometry (GFAAS) was employed for determination of Cd and Pb concentrations. The results indicated that Hg had the highest concentration level and Cd had the lowest concentration level either in tested canned tuna or fresh little tunny samples. The average concentration of Hg in fresh little tunny samples was 1.185 ± 0.968 mg kg(-1) wet weight (ww) and often exceeded the standard permissible limit. In addition, canned yellowfin tuna had the lowest levels of Cd (0.027 ± 0.026 mg kg(-1) ww), Pb (0.075 ± 0.071) and Hg (0.163 ± 0.122 mg kg(-1) ww). Results of the current surveillance indicated that canned skipjack and yellowfin tuna sold in Tripoli markets show contaminant levels well under the European thresholds adopted for Cd, Pb and Hg. However, consumption of large quantities of Mediterranean little tunny products significantly increases human exposure to the risk of Hg toxicity.

No MeSH data available.


Related in: MedlinePlus