METHOD OF DYE PRODUCING FROM ONION HUSK

摘要

FIELD: light and food industry. SUBSTANCE: method involves onion husk extraction with water at 69-79 C under pressure 7.2-10.0 MPa at continuous addition of ammonium hydrocarbonate and/or carbonate and/or semicarbonate and/or carbamate by dispersing in extractive mixture followed by separation of the end product from the grist. EFFECT: improved method of dye producing.