[Investigation of the chemical composition of fruit and berry raw materials of the Far Eastern Region as a perspective source of nutrients and bioactive compounds].

The Far Eastern region is rich in fruit and berry raw materials with a high content of bioactive substances. of the work is to study the chemical composition of wild berries of the Amur region of the Far Eastern region. . The objects of the research were the berries of Sargent viburnum (Viburnum sargentii Koechne), Chinese Schisandra [Schisandra chinensis (Turcz.) Baill], and Amursky grapes (Vitis amurensis Rupr) harvested from 2011 to 2016. The content of organic acids and tannins was determined by titration, anthocyanins - spectrophotometrically, polyphenolic substances and β-carotene - photoelectrocolo rimetrically, vitamins B, B - fluorometrically, vitamins B and E - by HPLC, hydroxycinnamine acids - by direct spectrophotometry. . The maximum amount of polyphenolic substances and vitamin C was found in V. sargentii berries, the average value of which was 1.01±0.04% and 85.2±2.4 mg/100 g, respectively. A high content of potassium was found in V. amurensis (an average of 188.5±2.2 mg/100 g) and V. sargentii (176.6±1.2 mg/100 g). The highest content of vitamins B1, B2, B6 was found in the berries of V. amurensis, the average content of which was, respectively, 0.071±0.002 mg/100 g, 0.065±0.002 mg/100 g and 0.081±0.004 mg/100 g. It was also found that in V. sargentii berries the level of all minerals and trace elements was the highest: calcium content in 100 g of berries was 41.4±0.8 mg, magnesium - 17.3±0.4 mg, phosphorus - 227.7±4.6 mg, manganese - 0.69±0.08 mg, iron - 0.60±0.08 mg, zinc - 0.90±0.08 mg. When consumed 100 g of V. sargentii berries, practically fully satisfies the need of an adult in vitamin C, in phosphorus and manganese - by about a quarter; in potassium, iron, and zinc, by 4-8%. 100 g of Sch. chinensis contains about 50% of the recommended daily intake of vitamin C, and 100 g of V. amurensis - about 10% of vitamin C and β-carotene, 7% of potassium, about 4% of group B vitamins. The studied berries can serve as a source of hydroxycinnamic acids and pectins. . Studies of the chemical composition of the berries V. sargentii, Sch. chinensis, V. amurensis harvested in 2011-2016 indicates a wide range of bioactive compounds, the proportion of each of which varies.