Heavy metals in foods from the Paraíba do Sul River valley, Brazil

Mauricio, José; Azcue, P.; Pfeiffer, Wolfgang C.; Donangelo, Carmen M.; Fiszman, M.; Malm, Olaf

doi:10.1016/0889-1575(88)90006-3

Cited by 11 publications

(2 citation statements)

References 5 publications

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“…In previous studies, Al concentration was reported to vary between 2.518 and 9.130 mg/L in milk (Akın et al., 2003; Algan et al., 2003; Maurício et al., 1988; Özrenk, 2002). In our study, Al concentrations of the control samples were found to be 1.53 mg/L on average.…”

Section: Discussionmentioning

confidence: 93%

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Effects of different heat treatment and radiation (microwave and infrared) sources on minerals and heavy metal contents of cow's milk

Güney

Gökmen

2020

J Food Process Preserv

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Milk is an animal‐origin food with high nutritional value. After the milk is obtained, its composition is affected by the tools and equipment used (such as filter, holding tank) its environment and heat treatments applied to milk. This study was conducted to investigate the effects of different heat treatments on the concentration of certain minerals and heavy metals in milk. Raw cow's milk, pasteurized milk (control, microwave, and infrared‐assisted microwave), and UHT milk samples were used in the study. Al, As, Ca, Cr, Cu, Fr, Mg, Na, Ni, P, Pb, Se, and Zn concentrations were investigated in these samples. Al and Ni concentrations of whole samples were statistically significant (p < .05). No significant differences have been found in terms of other heavy metal concentrations. Furthermore, there was no statistical difference between the pH values of the samples (p > .05). Both Al and Ni concentrations were found to be very low in infrared‐assisted microwave applications. As a result, infrared‐assisted microwave application revealed that the level of Al and Ni concentrations in milk was low. Besides, heavy metal toxicity can cause a variety of diseases in humans. Therefore, the effects of heavy metal levels below or above permitted limits in milk on human health were discussed in this study. Practical applications In our study, it was found that both Al and Ni concentrations were found to be very low in infrared‐assisted microwave applications. There was no significant difference between applications in terms of the contents of other heavy metals and minerals. For all these reasons, it was concluded that infrared‐assisted microwave application may be capable of reducing the danger of heavy metals such as Al and Ni concentrations in milk. Further research is needed on the subject.

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Section: Discussionmentioning

confidence: 93%

“…In previous studies, Al concentration was reported to vary between 2.518 and 9.130 mg/L in milk (Akın et al, 2003;Algan et al, 2003;Maurício et al, 1988;Özrenk, 2002). In our study, Al Likewise, at high temperatures, calcium and phosphate turn into an insoluble form (De La Fuente et al, 1999;Ünver & Şerafettin, 2017).…”

Section: Discussionmentioning

confidence: 93%

Effects of different heat treatment and radiation (microwave and infrared) sources on minerals and heavy metal contents of cow's milk

Güney

Gökmen

2020

J Food Process Preserv

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Evaluation of Heavy Metals in Fish of the Sepetiba and Ilha Grande Bays, Rio de Janeiro, Brazil

Lima

Araújo

Maia

et al. 2002

Environmental Research

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Accumulation of metals in three fish species from the Yaounde Municipal Lake in Cameroon

Léopold

Jung

Emmanuel

2015

Environ Monit Assess

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Metals are dangerous to aquatic organisms and they can bioaccumulate in the food chain and represent risk for humans. In order to appraise their levels in fish species, concentrations of various elements including Na, Mg, K, Ca, Al, Fe, Mn, Cr, Ni, Co, Cd, Cu, Pb, Zn, Ba, and Sr were determined in the muscles and gills of three fish species (Oreochromis niloticus, Sarotherodon galilaeus, and Clarias sp.) which are more fished and consumed in the Yaounde Municipal Lake, Cameroon. According to chemical results of the fish samples analyzed by ICP-AES, the concentrations of metals (mg kg(-1), wet tissues) in those fish tissues varied as follows for the muscle (and gill) Na 1480-3780 (4180-9310), Mg 897-1250 (843-1450), K 9600-18,500 (6020-10,400), Ca 430-3900 (22,200-62,400), Al 8.10-615 (113-951), Fe 12.0-725 (307-1160), Mn 1.61-30.1 (14.3-433), Cr 1.58-267 (0.31-35.4), Ni 0.16-1.85 (1.06-2.82), Co 0.10-0.47 (0.07-0.16), Cd 0.11-0.23 (0.10-0.22), Cu 0.59-5.13 (1.31-5.13), Pb 1.11-5.12 (2.56-5.74), Zn 15.4-47.2 (45.3-69.2), Ba 0.61-51.15 (0.35-83.2), and Sr 2.31-5.74 (2.09-5.75). The results revealed that Na, Ca, Zn, Fe, and Mn were higher concentrated in the gills than in the muscles, while K, Cr, Ni, Co, and Cd were more concentrated in the muscles of the species. In addition, all the elements were bioaccumulated in the fish species and the bioaccumulation factors (BAFs) were decreased in the following order: Cr > Ni > Zn > Al > Ca > Pb > Mn > Ba > K > Fe > Mg > Cu > Na > Sr > Co > Cd. Compared to international standards, Pb, Cd, Cr, Ni, and Zn were over the recommendations of the European Community, WHO, and Norwegian guidance values for human health. Therefore, fishes from the Yaounde Municipal Lake are not advised for human consumption as toxic elements might be taken above the recommended levels.

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Heavy metals in foods from the Paraíba do Sul River valley, Brazil

Cited by 11 publications

References 5 publications

Effects of different heat treatment and radiation (microwave and infrared) sources on minerals and heavy metal contents of cow's milk

Effects of different heat treatment and radiation (microwave and infrared) sources on minerals and heavy metal contents of cow's milk

Evaluation of Heavy Metals in Fish of the Sepetiba and Ilha Grande Bays, Rio de Janeiro, Brazil

Accumulation of metals in three fish species from the Yaounde Municipal Lake in Cameroon

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