The effect of vegetation period on contents of elements affecting antioxidant capacity of extracts from Ginkgo biloba L.
2009
Kobus, J. | Flaczyk, E. | Krejpcio, Z. | Staniek, H.,Uniwersytet Przyrodniczy, Poznan (Poland). Katedra Technologii Zywienia Czlowieka
The aim of the study was to determine contents of macro- and microelements in extracts from yellow and green leaves of Ginkgo biloba. The following elements: Mg, Cu, Zn, Cr, Fe and Se were determined by atomic absorption spectrophotometry. The concentrations of these elements varied depending on the vegetation period of leaves and extraction solvent. The highest concentration of Mg was observed in water extract. The highest levels of iron and the other microelements were observed in water extracts from green and yellow leaves
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