Abstract
Cottonseed flakes were extracted with mixtures of n-hexane and acetone, with the concentration of acetone varying between 10 and 75%. Adding small amounts of acetone (≤25%) to n-hexane significantly increased the extraction of free and total gossypol from cottonseed flakes. Sensory testing detected no difference in the odor of cottonseed meals produced either by extraction with 100% n-hexane or by extraction with a 10∶90 (vol/vol) mixture of acetone/hexane. More than 80% of the free gossypol was removed by the 10∶90 mixture of acetone/hexane, whereas pure n-hexane extracted about 47% of the free gossypol from cottonseed flakes. A solvent mixture containing 25% acetone removed nearly 90% of the free gossypol that was removable by extraction with pure acetone; the residual meal had only a minimal increase in odor. In contrast, cottonseed meals produced by extraction with pure acetone had a much higher odor intensity. The composition of the cottonseed crude oil was insignificantly affected by the acetone concentration of the extraction solvent. The results indicate that mixtures of acetone and n-hexane can be used as extraction solvents to produce cottonseed crude oil without the concomitant development of odorous meals.
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References
Fine, S.D., Food Additives Permitted in Food for Human Consumption, Fed. Regis. 37:13713 (1972).
Lusas, E.W., L.R. Watkin, S.S. Koseoglu, K.C. Rhee, and E. Hernandez, Replacing Hexane with Isopropyl Alcohol as an Oil Extraction Solvent, INFORM 5:525 (1994).
Kuk, M.S., and R.J. Hron, Jr., Cottonseed Extraction with a New Solvent System: Isohexane and Alcohol Mixtures, J. Am. Oil Chem. Soc. 75:927–930 (1998).
Abraham, G., K.M. Decossas, R.J. Hron, Jr., and M.S. Kuk, Process Engineering Economic Evaluation of Ethanol Extraction of Cottonseed: Preliminary Analysis, 68:418–421 (1991).
Vaccarino, C., A New Process for Cottonseed, 38:143–147 (1961).
Hron, R.J., Jr., and M.S. Kuk, Acetone Extracted Cottonseed Meals Without Catty Odor, J. Food Sci. 54:1088–1089 (1989).
Official Methods and Recommended Practices of the American Oil Chemists' Society, 4th edn., AOCS Press, Champaign, 1993.
ASTM, Annual Book of ASTM Standards, American Society for Testing and Materials, Philadelphia, 1992, Sections 05.05 and 15.05.
Kuk, M.S., and M.K. Dowd, Supercritical CO2 Extraction of Rice Bran, J. Am. Oil Chem. Soc. 75:623–628 (1998).
Kuk, M.S., Use of Hildebrand's Solubility Parameter in Oilseed Lipid Extraction, in Advances in Oils and Fats, Antioxidants, and Oilseed By-Products, Vol. II of Proceedings of the World Conference on Oilseed and Edible Oils Processing, edited by S.S. Koseoglu, K.C. Rhee, and R.F. Wilson, AOCS Press, Champaign, 1998, pp. 9–14.
Markman, A.L., and V.P. Rzhekhin, Gossypol and Its Derivatives, USDA and National Science Foundation, Washington, DC, 1968, Chapter 2.
Sensory Evaluation Techniques, 3rd edn., edited by M.C. Meilgaard, G.V. Civille, and B.T. Carr, CRC Press, Boca Raton, Florida, 1999, 387 pp.
Marmer, W.N., Traditional and Novel Approaches to the Analysis of Plant Phospholipids, in Lecithins, edited by B.F. Szuhaj and G.E. List, American Oil Chemists' Society, Champaign, 1985, p. 259.
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Kuk, M.S., Tetlow, R. & Dowd, M.K. Cottonseed extraction with mixtures of acetone and hexane. J Amer Oil Chem Soc 82, 609–612 (2005). https://doi.org/10.1007/s11746-005-1117-y
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DOI: https://doi.org/10.1007/s11746-005-1117-y