QUERCETIN FROM LARCH WOOD AT "EXPLOSIVE" AUTOHYDROLYSIS CONDITIONS IN THE PRESENCE OF BISULFITE MAGNESIUM
The influence of temperature and time of treatment of larch sawdust by overheated steam at conditions of «explosive» autohydrolysis in the presence of bisulfite magnesium on the yields of quercetin and quercetin dihydrate was studied. It was established that the highest degree of quercetin dihydrate conversion into quercetin was reached with larch sawdust preliminary impregnated by bisulfite magnesium and following treatments by steam at temperature 210-220 °С, pressure 3,4 МПа, during 200-250 s.