Fruit and berry crops have a positive effect on human health due to their rich mineral and organic composition. In the Amur region, the range of these crops is limited by unfavorable climatic conditions, which is why pineapple strawberries, felt cherries and Chinese irga are mainly common in household plots. Despite sufÏcient research on the organic composition of fruit and berry products, the issues of mineral composition have been poorly studied. The fruits of the corresponding crops in the biological ripeness phase, harvested in the summer of 2024, were frozen in a household freezer at a temperature of minus 18 оС. The shelf life of the fruit was six months. The concentration of cations and anions was determined by capillary electrophoresis, taking into account the requirements of regulatory and technical documentation. The results showed that felt cherry fruits are rich in magnesium and sodium ions, the concentration of which reaches 5.5 and 25.0 mg/100 g, respectively. The maximum chloride content found in felt cherry fruits is 259.0 mg/100 g. The concentration of sulfate ions varies from 1.60 mg/100 g (Chinese irga) to 121.60 mg/100 g (pineapple strawberries). Pineapple strawberries contain the least amount of nitrates – 2.22 mg/100 g. The data obtained indicate the biological activity of minerals, which may contribute to improving the health of the region's population. Thus, further research is required in the field of nutritional value of local fruit and berry crops.

Chagarova Olga V., Kositsyna Olga A., Osipov Petr E.

1. Pastushkova E. V., Zavorokhina N. V., Vyatkin A. V. Plant raw materials as a source of functional food ingredients. Vestnik Yuzhno-Ural'skogo gosudarstvennogo universiteta. Seriya: Pishchevye i biotekhnologii, 2016;4:105–113. doi: 10.14529/food160412. EDN XCNEOD (in Russ.).
2. Frolova N. A., Reznichenko I. Yu. Investigation of the chemical composition of fruit and berry raw materials in the Far Eastern region as a promising source of food and biologically active substances. Voprosy pitaniya, 2019;88;2:83–90. doi: 10.24411/0042- 8833-2019-10021 (in Russ.).
3. Praskova Yu. A., Frolova N. A., Shkrabtak N. V., Pekov D. B., Guzhel Yu. A. Investigation of the antioxidant potential of fruit and berry raw materials of the Amur region. APK Rossii, 2021;28;1:105–109. EDN YPGOON (in Russ.).
4. Berkal I. V. Floristic zoning of common blueberries growing in natural conditions of the Amur region. Vestnik Krasnoyarskogo gosudarstvennogo agrarnogo universiteta, 2023;4:93–99. doi: 10.36718/1819-4036-2023-4-93-99 (in Russ.).
5. Dimidenok Zh. A., Smirnova S. A. Quantitative assessment of heavy metal content in berry crops of the Amur region. Problemy regional'noi ekologii, 2020;5:17–20. doi: 10.24412/1728-323X-2020-5-17-20 (in Russ.).
6. Petrova S. N., Ivkova A. V. Chemical composition and antioxidant properties of species of the genus Rosa L. Khimiya rastitel'nogo syr'ya, 2014;2:13–19. doi: 10.14258/jcprm.1402013. EDN STGQHD (in Russ.). 
7. Eliseeva T., Mironenko A. Potassium (K, potassium) – description, effect on the body, the best sources. Zhurnal zdorovogo pitaniya i dietologii, 2020;13:59–70. doi: 10.59316/.vi13.84 (in Russ.).
8. Tkacheva N., Eliseeva T. Sodium (Na) – importance for the body and health + 30 best sources. Zhurnal zdorovogo pitaniya i dietologii, 2022;19:43–52. doi: 10.59316/.vi19.158 (in Russ.).
9. Eliseeva T., Mironenko A. Magnesium (Mg, magnesium) – description, effect on the body, the best sources. Zhurnal zdorovogo pitaniya i dietologii, 2020;14:60–71. doi: 10.59316/.vi14.91 (in Russ.).
10. Daminov F. A., Nabieva F. S., Ochilov O. Sh. The biological role of calcium in the human body. ReFocus, 2023;7:56–58. doi: 10.5281/zenodo.8156922 (in Russ.).
11. Zykova E. L., Dovnar A. K., Filippova V. A., Lysenkova A. V. Sanitary and chemical assessment of the content of toxic anions in natural waters of the Gomel region. Problemy zdorov'ya i ekologii, 2014;4(42):125–129. doi: 10.51523/2708-6011.2014-11-4-24. EDN TPWVTX (in Russ.).