Potential for Improving Cottonseed Quality by Genetic and Agronomic Practices
Potential utilization of cottonseeds as edible food sources accentuated the need for research on their composition. Studies included evaluation of cottonseed composition; e.g., seed grade, protein, amino acids, free fatty acids, oil, fatty acids, cyclopropenoid fatty acids, total gossypol, differential settling as an indicator of potential performance of cottonseed in the liquid cyclone process, and extractability of nonstorage and storage proteins and their gel electrophoretic properties. These extended studies were used to develop a data base on composition of various cottonseed cultivars grown in different locations of Texas that resemble environmentally most of the regions of the United States cotton belt. Tests showed that most constituents of cottonseed vary; statistically significant variables include cultivar, location, and their interaction term, cultivar x location. These data suggest that breeding and agronomic practices could be used to alter cottonseed composition. Although protein quantity of cottonseed from various cultivars differ and can be influenced by agronomic practices, this variability is not reflected in quality of cottonseed protein as detected by gel electrophoretic techniques. Analyses showed that both genetic and agronomic factors influenced formation of edible flour with high protein and low free gossypol content.
KeywordsFree Fatty Acid High Plain Differential Settling Free Gossypol Location Cultivar
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- American Oil Chemists’ Society (1976). Official and tentative methods (third edition-additions and revisions). Aa-4–38, Aa-5–38, Aa-6–38, Ba-7–58, Ba-8–55, Ce 1–62. The Society: Chicago, Ill.Google Scholar
- Berardi, L. C., Martinez, W. H. and Fernandez, C. J. (1969). Cottonseed protein isolates: two step extraction procedure. Food Technol. 23, 75–82.Google Scholar
- Cherry, J. P., Simmons, J. G. and Tallant, J. D. (1977). Cottonseed protein composition and quality of Gossypium species and cultivars. Proc. Beltwide Cotton Conf. 31, 46–49.Google Scholar
- Federal Register. (1973). Title 21, Part 2. Food Additives 39 (159): 22–241.Google Scholar
- Federal Register. (1974). Title 21, Part 2, Food Additives 39 (177): 327 325.Google Scholar
- Gardner, H. K., Hron, R. J. and Vix, H. L. E. (1976). Removal of pigment glands (gossypol) from cottonseed. Cereal Chem. 53, 549–560.Google Scholar
- Hess, D. C. (1976). Prospects for glandless cottonseed. Oil Mill Gaz. 81, 20–26.Google Scholar
- Lowry, O. H., Rosebrough, N., Farr, A. L. and Randall, R. J. (1951). Protein measurement with the Folin phenol reagent. J. Biol. Chem. 193, 265–275.Google Scholar
- National Cottonseed Products Association. (1977–78). Rules of the National Cottonseed Products Association. Ann. Session of the Assoc. 81, 57–61.Google Scholar
- Pope, O. A. (1945). Effect of variety, location, and season on oil, protein, and fuzz of cottonseed and on fiber properties of lint. Tech. Bull. 903, U. S. Dept. Agric. pp. 1–41.Google Scholar
- Rathbone, C. R. (1977). Development of cottonseed products. Proc. Beltwide Cotton Prod.-Mech. Conf. 36, 32–33.Google Scholar
- Sood, D. R., Kumar, V. and Dhindsa, K. S. (1976). Composition of cottonseed as affected by N, P and K application. Agrochimica 20, 77–81.Google Scholar