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Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Caragana, Fabaceae, phenolic compounds, flavonoids, Caragana; Fabaceae; фенольные соединения; флавоноиды
A study of phenolic compounds of the seven species of Caragana Fabr. genus growing on the territory of Siberia (C. arborescens, C. bungei, C. buryatica, C. frutex, C. jubata, C. pygmaea, C. spinosa) was realized. It is established that phenolic compounds are unevenly distributed in organs of studied species: the highest content of flavonoids in the leaves was observed for C. arborescens (107,78 mg/g) and in the flowers – for C. jubata (47,24 mg/g). The total contents of phenolic compounds in the leaves of the species were 35,00 (C. buryatica) – 112,78 mg/g (C. arborescens) and in the flowers – 36,24 (C. bungei) – 101,07 mg/g (C. jubata). To stem epidermal layers was observed a higher concentration of phenolic compounds than the same for inner bark of the stem. As a result of the chromatographic separation from C. spinosa was isolated and identified myricetin-3-O-rutinoside found in this species and Caragana genus for the first time. The investigation of the flavonoids accumulation in C. spinosa was showed that their maximum accumulation observed at the flowering period (in shoots up to 18,63 mg/g). The environmental growth conditions of C. spinosa affected on the quantitative content of phenolic compounds in the shoots, and the highest concentration was observed for meadow cenopopulations. It was established that the drying process of C. spinosa shoots does not change the composition of flavonoids, but reduced the total phenolic content in 17,3–33,9% and total flavonoids content in 12,6–27,0%.
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