Bielaieva Ya. V., Dziuba O. I., Lyubinska A. V.

BIOLOGY

Scentific article

Abstract. Hydroxycinnamic acids are phenolic compounds that get their name from the general precursor of cinnamic acid. Among plant phenylpropanoids, they occupy an important place in the plant world because they can be are found in almost every higher plant. The group of hydroxycinnamic acids includes cinnamic, coumaric, caffeic, ferulic and mustard acids and their derivatives, including chlorogenic and its isomers, chicory and rosemary. The protective function of phenolic substances against any biotic and abiotic stressors in plant tissues gives grounds to consider them as universal physiological adaptogens to adverse environmental factors. Current work is devoted to the determination of hydroxyscoric acids content in leaves of fifteen begonia species from the collection of Tropical and subtropical plants department of the M.M. Hryshko National Botanical Garden. The amount of hydroxycinnamic acids in plant tissues was determined by a modified method of Kurkin et al. Based on the results of the research, species that may have potential pharmacological activity were selected. The highest content of hydroxycinnamic acids was observed in B. dregei Otto & Dietr. (4,42%), B. dichotoma Jacq. (4,42%), B. venosa Skan ex Hook.f. (4,45%), B. peltata Otto & Dietr. (3,64%) та B. hirtella Link (4,11%). Mean values (2-2.6%) were found in B. heracleifolia Cham. & Schltdl., B. themei C.DC., B. foliosa Kunth, B. goegoensis N.E.Br. та B. mexicana G. Karst. The lowest percentage (1.3-1.6%) was observed in B. cucullata Willd., B. mollicaulis Irmsch., B. solimutata L.B. Sm. & Wassh. and B.× bunchii L.H. Bailey showed the highest content of hydrochicoric acids. The high content of hydroxycinnamic acids can be considered as one of the reasons for the high antibacterial and antifungal activity of studied Begonia species. Species of Begonia genus could be a natural source of chemical compounds that have potential pharmacological activity.

Begonia, leaf blade, hydroxycinnamic acids, antibacterial activity

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«Bulletin of problems biology and medicine» Issue 2 (160), 2021 year, 68-70 pages, index UDK 582.681.61+581.45

10.29254/2077-4214-2021-2-160-68-70