Determination of lotaustralin in Rhodiola species
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In our research, the concentration of lotaustralin in the roots of two species Rhodiola kirilowii and Rhodiola rosea were compared. Aqueous and hydroalcoholic extracts from those plants were analyzed too. To determine the content of this compound the ultra performance liquid chromatography – tandem mass spectrometry (UPLC-MS/MS, Waters) was used. The obtained results showed that the content of measured lotaustralin depends on the species of Rhodiola. R. rosea roots are the richer source of lotaustralin then R. kirilowii. The same situation was observed in the extracts. A hydroalcoholic extract from R. rosea contains up to 135.276 mg of lotaustralin in 100 g of dry powdered material. In the case of R. kirilowii extracts, an aqueous extract contained more lotaustralin (74.791 mg/100 g of dry powdered material) then a hydroalcoholic extract.
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