FIELD: pharmaceutical, cosmetic and food processing industry, in particular method for integrated utilization of larch wood.
SUBSTANCE: claimed method includes disintegration of larch wood having certain relative humidity in presence of ethanol up to specific particle size. Obtained ground pulp is extracted with ethanol under specific conditions, then solid and liquid phases are mechanically separated; ethanol with dissolved therein dihydroxyquercitine is mechanically recovered from liquid phase; liquid phase is filtered, boiling down; mixture of essential oils and fat organic acids useful in cosmetic industry is isolated from obtained concentrate. Dihydroxyquercitine is recovered form the rest organic phase. Whole process is carried out at specific temperature.
EFFECT: increased dihydroxyquercitine yield; simplified process; integral utilization of raw materials.
4 cl, 1 dwg, 3 ex
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