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- Title
Determination of the concentrations of essential and toxic metals in UHT milk produced in Mato Grosso State, Brazil.
- Authors
Santos, C. B. G.; Oliveira, A. P.; Martins, D. L.; Oliveira, J. C.; Pedro, F. G. G.; Villa, R. D.
- Abstract
The aim of this study was to determine the Na, K, Ca, Mg, Cu, Cr, Zn, Fe, Mn, Pb, and Cd in UHT milk produced in Mato Grosso State, Brazil. Three lots of whole, skimmed, and semi-skimmed UHT milk from four different producers were collected in the Cuiabá city. The samples were prepared by wet decomposition and quantification was performed using FAAS. The linear correlation coefficients were greater than 0.99 and the LOD and LOQ ranged from 1.8 x 10-3 to 2.4 x 10-1 mg/100 g, and from 5.4 x 10-3 to 7.2 x 10-1 mg/100 g, respectively. The precision and accuracy of the method were evaluated in addition and recovery tests. For the fortification levels evaluated, recoveries were in the range 71-112%, with RSD values lower than 12%. The concentrations of Na, K, Ca, Mg, Cu, and Zn varied according to the type of milk, and in some cases did not comply with the recommended values given in the Table of Food Composition. In the case of the toxic metals, some samples showed concentrations of Pb and Cr that exceeded the maximum values allowed by Legislation. The results indicated a need for improved quality control in milk production.
- Subjects
MATO Grosso (Brazil : State); METAL toxicology; MILK yield; COMPOSITION of milk; MILK quality; POLLUTANTS; QUALITY control
- Publication
International Food Research Journal, 2015, Vol 22, Issue 3, p981
- ISSN
1985-4668
- Publication type
Article