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Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Rhododendron, flavonoids, flavonols, quercetin, kaempferol, myricetin, dihydroquercetin, Rhododendron, флавоноиды, флавонолы, кверцетин, кемпферол, мирицетин, дигидрокверцетин
The composition and content of flavonoids glycosides and aglycones in the leaves of Rhododendron adamsii, Rh. parvifolium, Rh. impeditum, and the closely related species of the subsection Rhodorastra (Rh. dauricum, Rh. ledebourii, Rh. sichotense, Rh. mucronulatum) from populations of  the Altai, Yakutia, Tuva, the Amur region and Primorsky Krai, Buryatia, China were studied by HPLC. The aglycones content in hydrolysates of the majority of the species is about 1%, and quercetin and dihydroquercetin prevail in  aglycones composition. In Rh. adamsii and Rh. parvifolium aglycones are found predominantly in the free state, and in the species of the subsection Rhodorastra – in a bound one. Values of paired affinity of the investigated species on composition of phenolic compounds of extracts and hydrolysates vary from 30 to 90%, maximums are in pairs Rh. sichotense-Rh. dauricum, Rh. adamsii-Rh. ledebourii. As a result of the analysis of affinity of flavonoids composition of the species relation with D. Chamberlain’s anatomo-morphological classification is not exposed. Significant value of affinity Rh.  adamsii and Rh.  parvifolium is revealed. The minimum value of group affinity on flavonoids composition of extracts and hydrolysates of Rh. impeditum casts doubt on his position equally with Rh. parvifolium in the subsection Lapponica.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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    • Received March 14, 2012
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