METHOD OF OBTAINING BIOLOGICALLY ACTIVE SUM OF ACIDS IN COMPLEX EXTRADICTION PROCESSING OF WOOD GREENS OF SIBERIAN FIR (Abies Sibirica) Russian patent published in 2009 - IPC A61K36/15 B01D11/02 A01N3/00 A01P21/00 

FIELD: agriculture.

SUBSTANCE: air-dry crushed wood greens of fir is extracted twice with tret-butylmethyl ester. Extract is separated from needles and treated with 2% NaOH solution with further separation of organic and water layers. Water-alkali layer is acidified and formed organic phase representing sum of triterpene acids is separated. Organic layer is concentrated by extragent distillation, treates with hot water and volatile agents of fir oil are hydrodistilled at under pressure 0.1-0.3 atm and temperature not higher than 50°C. Vat residue is hydrolysed by boiling with water-alcohol alkali and neutral hydrolysate components are separated by solvent distillation at lowered pressure and temperature not higher than 80°C with further double extraction with methyl-tret-butyl ester, 2-3-time washing of obtained layer with water to neutral reaction and evaporation. Water-alcohol solution is acidified with 5-10% solution of hydrochloric acid to pH 2 and extracted with tret-butylmethyl ester. Extract is washed with water to neutral pH and ester is distilled under pressure 0.1-0.3 atm and temperature not higher than 80°C obtaining the product.

EFFECT: invention allows to realise said purpose.

7 ex, 6 tbl