| Abstrakt: |
Grapes and grape products are important sources of fiber, nutrients and minerals to the human body. For example, zinc and copper are two elements that are found in all parts of grapes (seeds, pulp, skins). In optimal concentrations, they are beneficial. If, however, it exceeds the daily dose of zinc (overdose), can occur several adverse reactions in the stomach (heartburn, nausea), tiredness, weakness. Copper overdose can lead to poor absorption of other essential minerals for the body (iron, calcium, magnesium, etc.). The aim of this study is to analyze the level of Zn and Cu in Vitis Vinifera L. grapes fruits and soil from the Murfatlar city, Constanta, Romania. These elements were quantified by flame atomic absorption spectrometry (FAAS) after the chemical mineralization of the samples with nitric acid and hydrogen peroxide in a Digesdahl device. It can be noticed that the values of cooper and zinc concentrations from both kind of samples (grapes and soil) were lower than the recommendable maximum limit of these metals in fruits respectively soil. [ABSTRACT FROM AUTHOR] |
