Ginkgo preparations are mainly used for the treatment of peripheral vascular disease or cerebral insufficiency, especially by elders. Supraoptimal concentration of several metals e.g., Fe, Zn, Cu, Al or Mn have toxic actions on nerve cells and neurobehavioral functioning, which can be expressed either as developmental effects or as an increased risk of neurodegenerative diseases in old age. Element content and composition of ginkgo leaves are important to know exactly by using whole leaves as drug in tea preparations or tinctures. Macro and micro elements of ginkgo (Ginkgo biloba L.) leaves collected from three different sites in Hungary (Europe) were analysed. Leaves were collected from male and female trees of similar age and grown next to each other. Leaf collection took place five times in the vegetation period (from May to September) of three concecutive years. Leaves were dried at 30°C, and pulverized directly before the analysis. Element composition was determined by ICP-OES. Well detectable differences were found among the collection sites in the element concentrations of Al, Ca, Fe, K, Mg, Mn, Na, P, Sr, Zn. However, no significant differences could be detected in the element composition of ginkgo leaves over the three-year period examined. Accumulation dynamism of the elements was quite diverse during the vegetation period. Concentration of the most elements increased continuously in the leaves. Concentrations of Al, B and Ca increased rapidly at the end of summer. During the vegetation period, concentration of Al, Ca, Mg increased by 1,5-2-fold, since content of B and Ba was more than 3-fold higher at the end of the investigation. Element compositions of male and female trees were compared in every sampling time, eliminating the effect of phenophases. Significant differences were obtained between the sexes for some elements. Concentrations of Al, Fe, K, Na, P, Zn were higher in leaves of female trees than those in leaves of male trees. However, concentration of Ca seemed to be higher in the leaves of male ginkgo trees.
|Title of host publication||Ginkgo Biloba|
|Subtitle of host publication||Biology, Uses and Health Benefits|
|Publisher||Nova Science Publishers, Inc.|
|Number of pages||7|
|Publication status||Published - Jan 1 2016|
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)