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Summary 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. Streszczenie W badaniach przeprowadzonych w Instytucie Włókien Naturalnych i Roślin Zielarskich porównano zawartość lotaustraliny w dwóch gatunkach roślin: Rhodiola kirilowii i Rhodiola rosea, jak również w przygotowanych z tych roślin dwóch wyciągach: wodnym oraz wodnoalkoholowym (50% etanolowy wyciąg). W celu wyznaczenia zawartości lotaustraliny wykorzystano ultrasprawny chromatograf cieczowy sprzężony z tandemowym spektrometrem mas (UPLC-MS/MS, Waters). Wykazano, że zawartość cyjanogennego glukozydu zależna jest od gatunku. Przeprowadzona walidacja metody pozwala na satysfakcjonujące wykorzystanie tej metody w badaniach zawartości lotaustraliny.

Determination of lotaustralin in Rhodiola species