METHOD FOR COMPLEX REPROCESSING OF FIRNEEDLE, BARK AND WASTE FROM LARCH WOOD REPROCESSING AND LOGGING Russian patent published in 2005 - IPC

FIELD: complex reprocessing of waste from larch wood to produce native bioflavonoids, oils, wood resins oligosacharides, and insoluble wood biopolymers for organic synthesis, food processing industry, agriculture, veterinary, medicine, etc.

SUBSTANCE: claimed method includes isolation from firneedle, bark and waste of larch wood native dihydroquercetin containing 98 % of main ingredient and other bioflavonoids; powdery arabinogalactan containing 98 % of main ingredient; and active carbohydrate-lignin biopolymer by raw material destruction and extraction soluble substances therefrom with mixture of hydrocarbon solvent, ethanol, and water, followed by separation of solid and liquid phases and isolation of natural wood resins and oils and bioflavonoid (dihydroquercetin) from liquid phase; and oligosacharid (arabinogalactan) and carbohydrate-lignin wood biopolymer from solid phase.

EFFECT: method if improved effectiveness and yield; value products of high purity.

6 cl, 2 ex