The flavonoids content in the fruits of some woody introduced species grown in the Botanical Garden of Samara University

Abstract

This paper discusses the features of the flavonoid complexes accumulation in the fruits of some fruit and berry crops that have been grown in the conditions of the Botanical Garden of Samara University. The objects of this study are the fruits of such crops as Ampelopsis glandulosa Elegans, Morus alba L., Mahonia aquifolium (Pursh) Nutt.), Sambucus nigra L. Mature fruits were collected in the autumn of 2021 by the staff of the Botanical Garden to study the fruits of these plants for flavonoids. They were kept frozen, the samples were used to prepare an alcoholic extract with the addition of acid according to the appropriate method. This extract was further used for spectrum recording and for the quantitative determination of phenolic compounds by the conventional method using the FolinCiocalteu reagent to estimate the content of the substances of phenolic nature in a particular sample. An approximate estimate of the amount of phenolic compounds in the studied extracts showed that the objects differed in the amount of extracted phenolic compounds. Magonia was in the first place both in fresh and dry mass, the second place was shared by ampelopsis and elderberry. And the least amount of phenolic compounds was found in mulberry fruits.