Phytochemical analysis and antioxidant properties of plant extracts of the Rosaceae family

The article presents data on the content of biologically active compounds and total antioxidant capacity of extracts of plants of the family Rosaceae - Crataegus dahurica Koehne ex Scheid., Sanguisorba officinalis L., Rosa acicularis Lindl. growing in Yakutia. The quantitative content of flavonoids, phenylpropanoids, and the total content of phenolic compounds was analyzed in water-ethanol extracts of leaves from the studied plants, according to Folin-Chokalteu. It was shown that among the plants, a high content of flavonoids (2.51 mg%) and total phenolic compounds (42.34 mg%) were found in Rosa acicularis extracts, while phenylpropanoids (2.26 mg%) were predominant in Sanguisorba officinalis leaves. To evaluate the total antioxidant capacity, the chemiluminescence assay method was used in a horseradish peroxidase, hydrogen peroxide, and luminol system. The highest antioxidant capacity values were found in Rosa acicularis leaf extracts (9.77 units), which correlates with the increased content of phenolic compounds in this plant. Rosa acicularis leaves are more promising for searching for sources of antioxidants. Keywords: plant extracts, antioxidants, total antioxidant capacity, phenolic compounds, phenylpropaniodes, flavonoids, chemiluminescence.