E.V. Vetrova, E.V. Maksimenko, S.N. Borisenko, A.V. Lekar, N.I. Borisenko, V.I. Minkin
Extraction of Antioxidants Rutin and Quercetin from the Buds of Sophora Japanese (Sophora japonica L.) by Subcritical Water
The environmentally friendly method of rutin and quercetin extraction from the flower
buds of Sophora japonica L. by subcritical water in the static mode is developed.
Concentrations of the target compounds in extracts are determined using the HPLC
method. The developed method demonstrates a high efficiency compared to the
traditional one: similar yields of the target compounds can be obtained for a 10 times
shorter time of extraction.
Key words: subcritical water, extraction, antioxidant, rutin, quercetin, Sophora japonica L.