| 摘要 |
FIELD: resin industry. SUBSTANCE: invention relates to integrated processing of larch wood to recover native bioflavanoids: dihydroquercitine, dihydrokaempferal, naringenin, wood resins, oils, oligosaccharides, and insoluble wood biopolymer. Integrated processing of wood and needles of larch comprises extracting natural substances from destroyed wood with water-containing organic solvent under conditions promoting fluidized state of extraction material components, namely at temperature 0 to 40 C using, as solvent, emulsion of nonpolar aliphatic hydrocarbon with boiling temperature no higher than 90 C and methyl-tert-butyl ether in deionized water at their weight ratio (0.5-1):(0.6-4.0):(4.0-10.0), respectively, weight ratio of destroyed wood to nonpolar solvent contained in emulsion being between 1.0:0.5 and 1.0: 1.0. Extraction material is separated into extract and solid phase composed of carbon-containing wood polymer. Solid phase is washed with said emulsion and deionized water under fluidization conditions and routed to isolation. Water-hydrocarbon-ether extract is separated into stratifiable hydrocarbon-ether phase containing oils, resins, and bioflavanoids and aqueous oligosaccharide phase. Organic hydrocarbon-ether phase of extract is absorbed by ethanol to form immiscible phases followed by isolation of native oils and resins from hydrocarbon-ether phase, native bioflavanoids from ethanol-ether phase, and oligosaccharides (arabinogalactan) from aqueous phase. EFFECT: simplified and automated production process. 4 cl, 1 dwg |
