Raspberry is a crop, characterized by a valuable chemical composition, which determines the wide spectrum of its utilization not only as a fresh fruit, but also as a plant raw material for the food industry. The purpose of the paper is to make an integrated assessment for the fruit of promising raspberry varieties from genetic pool of FSSI “I.V. Michurin FSC” for nutrient and biologically active substances content and mineral elements. The object of investigation was 18 raspberry fruit varieties. The varieties are promising for cultivation in the Central Black Soil region of Russia. Chemical analyses of fruit were carried out with the use of spectrophotometric, chromatographic (HPLC), atomic absorption methods. As it was found, the significant variation in chemical composition indicators turned to be dependent on varietal features. The raspberry fruit accumulated 2.9–3.9% of dietary fibre, 0.34–1.3% of protein, 13.6–31.1 mg/100g of vitamin C, 0.2–83.6 mg/100g of anthocyanins, 0.14–0.90 mg/100g of niacin, 0.1–0.9 mg/100g of resveratrol, 0.2–3.1 mg/100g of piceid, 118.8–388.0 mg/100g of potassium, 0.29–0.97 mg/100g of iron. A high level accumulation of ascorbic acid was found in Gerakl, Evrazia, Zhar-ptitsa, Peresvet varieties; anthocyanins–in Evrazia, Gerakl, Polka, Rubinovoe ozherel’e; resveratrol and piceid–in “Zhelty gigant” and “Rubinovoe ozherel’e” varieties. The studied varieties are recommended as edible fresh fruit and for the consumption in the frozen form. Preventive food production is also appropriate.

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Seeds are the by-product in the cultivation of pumpkin. They are characterized by a high level of mineral substances and essential oils. However, the level of accumulation of biologically active components of seed kernel varies greatly among pumpkin varieties depending on climatic cultivation zones. Pumpkin varieties – Vitaminnayanaya, Michurinskaya sladkaya, Kubyshka, Muskatnayanaya, Aport – are taken as the objects of study. The chemical analysis of pumpkin seed kernels was carried out in accordance with generally accepted methodological recommendations. It was found that the sodium content in pumpkin seed kernel in the varietal section varies within the range of 5.07-17.6 mg/100 g, potassium – 554.8-767.1 ml/100g, calcium – 156.6-989.0 ml/100g, magnesium – 125.5-323.8 ml/100g, iron – 2.31-6.92 ml/100g, copper – 0.384-0.697 ml/100g, zinc – 4.80-7.43 ml/100g. The kernels of pumpkin seeds of the Michurinskaya sladkaya variety are characterized by high level of calcium – 989 ml/100g. Pumpkin seed kernels zoned in Tambov Region are rich in essential linoleic acid (52.59-63.87%), polyunsaturated oleic acid (11.70-27.35%), tocopherol (90-140 ml/100g). According to the content of linoleic acids, the highest indicators were found in seeds of Aport varieties – 63.87%, oleic acids – Muskatnayanaya (27.35%). The high content of tocopherol is typical for seeds of the Michurinskaya sladkaya variety – 140 ml/100 g. The obtained data on the chemical composition of pumpkin seed kernels indicate their promising use in the creation of functional food products and biologically active additives.

Background. Blue honeysuckle (Lonicera caerulea L.) is a valuable source of bioactive compounds (BAC) of polyphenolic nature and rare for horticultural berries iridoids, which have antioxidant, anti-inflammatory, antimicrobial and other properties and are widely used in the food, medical and cosmetic industries.Materials and methods. The berries of 20 released honeysuckle cultivars of Russian, Canadian and U.S. origin, reproduced at the I.V. Michurin Federal Science Center in Tambov Province, were studied for the content of the main BAC groups using modern methods (spectrophotometry, HPLC-UV, HPLC-RID, and HPLC-DAD-MS).Results and discussion. The main BAC groups (the content and profile of anthocyanins, proanthocyanidins, flavonols and flavones, hydroxycinnamic acids (HCA), iridoids, and organic acids) as well as mono- and disaccharides were studied in detail. A comparative study of the biological value of domestic and foreign honeysuckle cultivars was carried out.Conclusions. The study resulted in identifying the most promising cultivars of honeysuckle according to the content of the main BAC groups.