Abstract
The concentrations of 13 elements (Al, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn) were determined in several samples of native (wild) naturally growing and cultivated blueberry fruits. The total metal contents after mineralization were analyzed by inductively coupled plasma optical emission spectrometry. Reliability of the procedure was checked by the analysis of the certified reference materials Mixed Polish Herbs (INGT-MPH-2) and Leaves of Poplar (NCS DC 73350). In the fruits collected in the forest (wild blueberries), higher contents of Ca, Na, and Mg as well as Mn and Zn were observed. Similar levels of Cu, Cr, Fe, and Ni were detected in both wild-growing and cultivated plants. The significantly higher content of Fe and Cd in cultivated blueberries was connected with the content of these metals in soil samples collected from the same places. The metal extraction efficiency by hot water varied widely for the different blueberries (wild or cultivated) as well as their form (fresh or dried).
Highlights
Among the colorful berries, Vaccinium corymbosum, called American the blueberry, and the wild-growing blueberry Vaccinium myrtillus L. are popularly used in the human diet either fresh or in processed forms
It was found that the consumption of wild blueberry drink for 6 weeks significantly reduced the levels of oxidized DNA bases and increased the resistance to oxidatively induced DNA damage [5]
In order to validate the analytical protocol, linearity of the calibration curve range for each element generated by injection of standard solutions as well as limit of quantification (LOQ) were evaluated
Summary
Vaccinium corymbosum, called American the blueberry, and the wild-growing blueberry Vaccinium myrtillus L. (called bilberry) are popularly used in the human diet either fresh or in processed forms. Vaccinium corymbosum, called American the blueberry, and the wild-growing blueberry Vaccinium myrtillus L. There has been a growing trend in the use of blueberry extracts as ingredients in functional foods and dietary supplements. They are a rich source of flavonoids, phenolic acids, anthocyanins, stilbenes, and tannins, as well as nutritive compounds such as sugars, essential oils, carotenoids, vitamins, and minerals [1]. It was found that the consumption of wild blueberry drink for 6 weeks significantly reduced the levels of oxidized DNA bases and increased the resistance to oxidatively induced DNA damage [5]
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