GB1287277A - Method of processing cotton seed - Google Patents

Abstract

1287277 Processing cottonseed DORROLIVER Inc 9 Sept 1969 [13 Sept 1968] 44414/69 Heading A2Q [Also in Division C3] A process of treating cottonseed meats to separate intact pigment glands and to produce a protein-rich concentrate comprises drying cottonseed meats at below 180‹F to a moisture content of less than 4% by wt., flaking said meats, adding a non-polar solvent (e.g. hexane) to the flaked meats to render the mixture sufficiently fluid and to extract some oil, disintegrating the flake/solvent mixture to produce at least a fraction having a particle size which will pass through an 80 mesh (Tyler) screen and in which the intact pigments glands are released from the protein meats, adding further non-polar solvent to the disintegrated flaked material, and separating the intact pigment glands from the protein meats in a liquid cyclone separator to produce an underflow stream containing non-protein substances including the intact pigment glands and an overflow stream containing the protein meats from which the protein-rich concentrate is prepared. The overflow stream may be passed through a series of liquid cyclone separators, filtered, dried and ground. The disintegrated material may be screened prior to the liquid cyclone separation step. The material may be disintegrated in a rotary mill. The protein-rich concentrate may comprise at least 65% by wt. protein, less than 0.3% by wt. gossypol and less than 2% by wt. oil.