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Cereal Chem 53:549 - 560.  |  VIEW ARTICLE
Removal of Pigment Glands (Gossypol) from Cottonseed.

H. K. Gardner, Jr., R. H. Hron, Sr., and H. L. E. Vix. Copyright 1976 by the American Association of Cereal Chemists, Inc. 

Gossypol in pigment glands of cottonseed kernels is toxic to most monogastric animals and imparts desirable color to oil and protein products produced from the seed. To produce a food-grade protein product from glanded cottonseed, a workable process for the removal of the pigment glands is prerequisite. The Liquid Cyclone Process (LCP) is the first economical and workable process capable of removing pigment glands from cottonseed to consistently produce high-protein, edible flour. Approximately 9000 lb of cottonseed flour containing 0.04% or less of free gossypol and more than 65% protein have been produced in the Southern Regional Research Center's pilot plant during the last 4 years. Evaluation of the flour in food applications was very successful. Flour produced by the LCP was approved as a food additive by the FDA as of July 13, 1972. Development of the LCP has led to construction of a plant to produce deglanded, high-protein cottonseed flour of edible grade at Plains Cooperative Oil Mill, Lubbock, Tex.

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