Comparison of Antioxidant, Antiradical and Antibacterial Activities of Mistletoe (Viscum album L.) Fruits and Leaves Growing on Different Host Tree Genus

Mistletoe is a hemi-parasitic shrub and grows on different host trees and used as a remedy for some disease therapies. In this study, mistletoe fruits and leaves growing on different host tree genera were compared in terms bioactivity and antibacterial efficiency. For this purpose, mistletoe samples were collected from seven different tree genera (black locust, wild pear, pine, hawthorn, willow, apricot and almond) and removed their fruits and leaves. At the beginning, the most suitable solvent for the extraction was determined using optimization procedure of simplex lattice mixture design. The most effective solvent showing the highest total phenolic content (TPC) and antiradical activity (ARA) was determined as ethanol:water (92.5:7.5) for the fruit and ethanol:water (30:70) for the leaf extraction. TPC values of the leaf and fruit samples ranged between 7 and 21.2 and 3.2-6.9 mg GAE/g, respectively. The results showed significant differences based on the tree genus and the highest antioxidant and antiradical activities were monitored for the black locust tree while the lowest values were in willow tree. For antibacterial activity, the highest inhibition zone was obtained from wild pear leaf extract for Salmonella Typhimurium. Mistletoe leave extracts showed a remarkable superiority bioactive performance than those of the mistletoe fruits for all tree genus. [GRAPHICS]