COMPARATIVE STUDY OF PHENOLIC COMPOSITION AND ANTIOXIDANT ACTIVITY OF SEMI-PARASITE VISCUM ALBUM L. AND LEAVES OF PLANT HOSTS MALUS DOMESTICA BORKH., PYRUS COMMUNIS L.

Abstract

Viscum album L. is a hemiparasite and most often parasitic on deciduous trees, and the chemical composition of the semi-parasite plant can vary depending on the time of harvest, the type of host tree. The object of the study was the leaves of mistletoe growing on the domestic apple tree, collected in the vicinity of the city of Stavropol, and the leaves of mistletoe growing on the common pear, collected on the territory of the Belorechensky district of the Krasnodar Territory. The aim of the study was a comparative study of the content of phenolic compounds and the antioxidant activity of the leaves of a semi-parasitic Viscum album L., and the leaves of host plants – Malus domestica Borkh. and Pyrus communis L.. The maximum content of the sum of flavonoids in extracts from white Viscum album, Malus domestica and white Viscum album, Pyrus communis, is observed during the extraction of raw materials with 50% ethyl alcohol, and is 0.926±0.005%; 4.482±0.011% and 0.552±0.004%; 2.63±0.010%, respectively. The highest content of the sum of phenolic compounds is observed in the extract from the leaves of the Malus domestica, obtained by extraction with 50% ethyl alcohol, and is 21.55±0.18%. The amperometric method established the total content of antioxidants in the analyzed extracts from the leaves of white Viscum album, Malus domestica and Pyrus communis. Ethyl alcohol 50% was the optimal extractant. According to the results of the evaluation of the antioxidant properties of the studied extracts in vivo, it was found that the extracts obtained from the leaves of mistletoe and the leaves of carrier plants (Malus domestica and Pyrus communis) are characterized by equivalent antioxidant activity.