Summary
Experiments utilizing cottonseed meats of diverse origin and composition were conducted for the purpose of determining the effect of the method of meats preparation on the yields of crude and neutral oil obtainable from differently prepared, comparable meats by solvent extraction. Three methods of meats preparation were employed,i. e., simple flaking of raw meats “as is”, tempering of cracked meats prior to flaking, and cooking by the modified hydraulic method developed for use with the filtration-extraction process. Commercial hexane was used as the extraction solvent. The experiments were carried out by procedures which eliminated the effects of any variables other than the method of preparing the meats for extraction
The results of the studies showed that the method used in preparing cottonseed meats for extraction had a significant effect on the yields of crude oil obtained but that the yields of neutral oil, the valuable constituent of crude oils, were virtually unaffected. Analyses of the crude oils showed that the differences in crude oil yields were caused by the relative amounts of non-neutral oil materials in the crudes from the differently prepared meats. The greatest yields of crude oil were obtained from raw flakes, intermediate yields from tempered flakes, and the smallest yields from cooked flakes. The impurities content in the respective crude oils followed the same order,i. e., crudes from raw flakes were highest in impurities and lowest in neutral oil, crudes from tempered flakes were lower in impurities and higher in neutral oil, and the crudes from the cooked meats were outstandingly low in impurities and high in neutral oil. Virtually equal amounts of neutral oil were obtained from equivalent quantities of comparable meats regardless of the method used in preparing the meats for extraction.
Similar content being viewed by others
References
American Oil Chemists’ Society, “Official and Tentative Methods,” edited by V. C. Mehlenbacher and T. H. Hopper, 2nd ed., rev. to 1955, Chicago, 1946–55.
Brawner, J. H., Fowler, M. H., Norris, F. A., Smith, A. Proc. Cottonseed Processing Clinic (South. Reg. Research Lab., New Orleans),5, 32–38 (1956).
D’Aquin, E. L., Vix, H. L. E., Spadaro, J. J., Graci, A. V. Jr., Eaves, P. H., Reuther, C. G. Jr., Molaison, L. J., McCourtney, E. J., Crovetto, A. J., Gastrock, E. A., and Knoepfler, N. B., Ind. Eng. Chem.,45, 247–254 (1953).
Eaves, P. H., Spadaro, J. J., D’Aquin E. L., Crovetto, A. J., Cirino, V. O., Stansbury, M. F., and Hoffpauir, C. L., “The Difficulty Extractable Lipides of Cottonseed Meats, Their Composition, and Effect on the Refining Characteristics of the Crude Oils,” in press.
Eaves, P. H., Molaison, L. J., and Spadaro, J. J., “Bench-Scale Reaction Vessel and Cooker”, in press.
Knoepfler, N. B., Eaves, P. H., and Vix, H. L. E. Cotton Gin and Oil Mill Press,54, No. 6, 98–100 (1953).
Linteris, L., and Handschumacher, E., J. Am. Oil Chemists’ Soc.,27, 260–263 (1950).
Pons, W. A. Jr., Hoffpauir, C. L., and O’Connor, R. T. J. Am. Oil Chemists’ Soc.,27, 390–393 (1950).
Pons, W. A. Jr., Hoffpauir, C. L., and O’Connor, R. T., J. Am. Oil Chemists’ Soc.,28, 8–12 (1951).
Pons, W. A. Jr., Stansbury, M. F., and Hoffpauir, C. L., J. Asso. Offic. Agr. Chemists,36, 492–504 (1953).
Rewald, B. Biochem. J.36, 822–824 (1942).
Whittecar, W. C., Oil Mill Gaz.,58, No. 2, 22–24 (1953).
Author information
Authors and Affiliations
Additional information
One of the laboratories of the Southern Utilization Research Branch, Agricultural Research Service, U.S. Department of Agriculture.
About this article
Cite this article
Eaves, P.H., Molaison, L.J., Pollard, E.F. et al. Comparative absolute yields of crude and neutral oils from variously prepared cottonseed meats. J Am Oil Chem Soc 34, 156–159 (1957). https://doi.org/10.1007/BF02670938
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02670938