A method to measure cottenseed oil and oily seed-coat fragments in raw cotton and waste residues has been developed. Carbon tetrachloride is used to extract cottonseed oil from the Shirley analyzer waste of a known amount of cotton or from a waste residue. The amount of cottonseed oil is determined by quantitative infrared analysis, and can be related to seed-coat fragment content. Results of tests on cottons from several ginning studies show that both cottonseed oil content and seed-coat fragment content vary with ginning treatment. Excess cottonseed oil in cotton contributes to sticking problems in yarn manufacturing, with the problem being particularly acute at the card crush rolls.
A. S. T. M.Standards on Textile Materials, Seed Coat Fragments and Funiculi in Cotton Fiber Samples (D2496-69), 1969.
2.
Mangialardi, G.J., Jr., and Shepherd , J.V.Effect of Lint Cleaning at Cotton Gins on Speed Coat Fragments and Funiculus Distribution, Textile Res. J.39, 11-14 (1969).
3.
Moore, V.P., and Shaw, C.S., Mechanical Damage to Cottonseed, The Cotton Gin and Oil Mill Press, 10-12 (March 11. 1967).
4.
Perkin-Elmer Instruction Manual, Vol. 2, Infrared Sampling and Techniques, the Perkin-Elmer Corporation, Norwalk, Connecticut, 1952.
5.
Rollins, M.L. , The Cotton Fiber, in "The American Cotton Handbook," Vol. 1, D. S. Hamby, Ed., New York, Interscience, 1965, p. 73.
6.
Watson, H., and Helmer, J.D., Cottonseed Quality as Affected by the Ginning Process, Progress Report, ARS 42-107, Agricultural Research Service, Beltsville, Maryland, 1964.
