The estimation of viburnum variety by qualitative features and biochemical contents of fruits
The data of complex estimation of perspective varieties of viburnum by selection of All-Russian Research Institute of Genetics and Breeding Fruit Plants (ARRIG&BFP, VNIIG&SPR) named after I.V. Michurin on biochemical contents and qualitative features of their fruit are presented in this paper. Perspective breeding varieties are characterized improved flavor of fruit with lower content of bitterness. Therapeutic features, high antioxidant activity, polyphenol complex and specific components for this non-traditional culture - valeric acid and glycoside vibumin -were characterized. The requirements for new varieties of Viburnum on main biochemical parameters (ascorbic acid content - not less than 100 mg/100 g, P-active compounds - not less than 600 mg/100g) were shown. The aim of this study was to selection the best genotypes that can serve as sources of health-promoting substances, natural vitamins, pigments, etc. Analyses of fruits were carried out in biochemical laboratories by conventional standardized methods. There were allocated varieties as the breeding-valuable sources of large-fruited (Elexir, Iskra), high palatability with higher sugar-acid ratio (Krasnaya grozd - 7,3; Kleymenovka - 8,2), high levels of ascorbic acid (Accord - 61,6 mg/100g), carotene (Elexir -1,65 mg/100g; Accord - 0,91 mg/100g), catechins (Krasnaya grozd - 568 mg/100g), anthocyanins (Kleymenovka - 57,2 mg/100g), pectin substances (Luch - 1,15%), the antioxidant activity of fruits (Iskra - 1,03 mg/dm <sup>3</sup> gallic acid). These varieties are interesting for technological processing and further breeding work on the improvement of biochemical composition of fruits, which expands the prospects of using viburnum in human nutrition at modem conditions.