Key words: sub — and supercritical fluid extraction, ethanol, tinder mushroom, Fomes fomentarius, polyphenols, antiradical activity
The process of sub- and supercritical fluid extraction with ethanol of the fruiting body biomass of the tinder fungus F. fomentarius was studied. The evaluation of the extraction conditions (temperature, pressure and duration) for the yield of the solid extract, phenolic compounds and steroids was carried out. It was found that sub- and supercritical extraction was more efficient in comparison with traditional methods of biologically active substances isolation (maceration and percolation). The yield of the solid extract reaches 43 wt.%. The content of phenolic compounds in the extract was up to 50 wt. %. It was shown that the extracts have high antiradical activity (up to 350 μmol trolox-equiv/g). The positive correlation between the antiradical activity of the extracts and the content of phenolic compounds in them was established.
doi:10.34984/SCFTP.2021.16.2.002