FIELD: technological processes; chemistry.
SUBSTANCE: method of cedar bark integrated processing is described, which includes extraction of bark with nonpolar dissolvent with extraction of coniferous wax, further extraction of anthocyanidin colouring agent from bark and processing of bark remains into active coal, at that after preparation of anthocyanidin colouring agent bark remains are subjected to extraction with 0.4-1.0% aqueous solution of ammonium oxalate at the temperature of 95-100°C with extraction of pectin.
EFFECT: suggested method provides achievement of practically complete utilisation of cedar bark with preparation of coniferous wax; anthocyanidin colouring agent; pectin and active coal and makes it possible to increase pectin output and its quality.
1 dwg, 3 tbl, 6 ex
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