Abstract
The paper presents the results of studying fruits antioxidant properties of several species, previously combined into the genus Sorbus L. (Rosaceae family). Ripe fruits were collected in September 2020 from the plants of Cormus domestica (L.) Spach, Sorbus aucuparia L., Karpatiosorbus latifolia (Lam.) Sennikov & Kurtto and Torminalis glaberrima (Gand.) Sennikov & Kurtto from the collection of the Botanical Garden of the Oles Honchar Dnipro National University. Total phenolic content (TPC), total flavonoids content (TFC), ferric reducing antioxidant power (FRAP) and total antioxidant capacity (TAC) were determined both in the fruits peel and pulp. In the fruits of all species, higher values of the determined indicators were found in the fruit peel than in the pulp. Moderate and strong positive correlation was found between FRAP and TPC as well between FRAP and TFC both in peel and pulp of all studied species. At the same time, notable interspecific differences of the phytochemical traits were established, indirectly confirming the ambiguity of the taxonomy of the genus Sorbus L. According to the fruits antioxidant properties and secondary metabolites accumulation, species K. latifolia (broad-leaved whitebeam) and T. glaberrima (wild service-tree) are the most promising for cultivation in arid conditions of the central steppe of Ukraine.
Highlights
Fruit plants have always been one of the most important nutrition sources for humans
The purpose of our work was to study the antioxidant properties of the fruits Sorbus aucuparia L., Cormus domestica (L.) Spach, Karpatiosorbus latifolia (Lam.) Sennikov & Kurtto and Torminalis glaberrima (Gand.) Sennikov & Kurtto, growing in the arid conditions of the steppe zone of Ukraine, and to assess the prospects of different species for distribution in the region
Fruits of different species previously assigned to the genus Sorbus L., namely, Cormus domestica (L.) Spach, Sorbus aucuparia L., Karpatiosorbus latifolia (Lam.) Sennikov & Kurtto, and Torminalis glaberrima (Gand.) Sennikov & Kurtto, were used for a comparative assessment of the plants antioxidant potential
Summary
Fruit plants have always been one of the most important nutrition sources for humans. The most valuable are the extracts of medicinal plants, which, in addition to compounds with antioxidant properties, contain other biologically important substances (Dragonyuk et al, 2012). The steppe zone of Ukraine is characterized by a limited species composition and insufficient distribution of autochthonous fruit plants. In this regard, the introduction of productive cultivated species from other geographic regions can enrich the spectrum of fruit species. (Grynyk et al, 2019) Plants of this genus have unique medicinal properties due to the high content of biologically active secondary metabolites in both vegetative and generative organs (Gaivelyte et al, 2013; Zymone et al, 2018). The beginning of species of the genus Sorbus cultivation in Ukraine dates back to 1809, and by 1999, 14 species were introduced into the culture (Melnichenko, 1999)
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