Summary
The glyceride composition of soybean oil has been calculated according to even and random distribution patterns and has been compared with experimental fractionations obtained by adsorption analysis, liquid-liquid extraction, and crystallization. Evidence is presented which indicates that soybean oil does not follow the elementary conception of even distribution. Fractions have been isolated by these three methods with iodine values lower than that permitted under the rule of even distribution. Further data indicate the occurrence of di-saturates and dilinolenin, neither of which is permitted under the rule of even distribution.
The ultimate proof of the distribution pattern existing in soybean oil, whether random or partial random, must await the development and application of more efficient methods of fractionation. At the present time separation of soybean triglycerides appears limited by the efficiency of fractionation procedures rather than by the pattern of fat acid distribution.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Hilditch, T. P., Chemical Constitution of Natural Fats, p. 15, John Wiley and Sons, Inc., New York, 1941.
Hilditch, T. P., J. Am. Oil Chem. Soc.,26, 41 (1949).
Norris, F. O., and Mattil, K. F., J. Am. Oil Chem. Soc.,24, 274 (1947).
Longenecker, H. E., Chem. Rev.,29, 201 (1941).
Riemenschneider, R. W., Luddy, F. E., Swain, Margaret, and Ault, W. C., Oil and Soap,23, 276 (1946).
Doerschuk, A. P., and Daubert, B. F., J. Am. Oil Chem. Soc.,25, 425 (1948).
Golumbic, C. O., Martin, C. J., and Daubert, B. F., Oil and Soap,23, 187 (1946).
Gloyer, S. W., Ind. Eng. Chem.,40, 228 (1948).
Hilditch, T. P., Meara, M. L., and Holmberg, J., J. Am. Oil Chem. Soc.,24, 321 (1947).
M. W. Kellogg Co., Prescription for Glycerides, 1947.
Bailey, A. E., Industrial Oil and Fat Products, p. 683, Interscience Publisher, Inc., N. Y., 1945.
Bernstein, J. M., J. Polymer Sci.,1, 495 (1946).
Reinbold, Catherine, L., and Dutton, H. J., J. Am. Oil Chem. Soc.,25, 117 (1948).
Edeleanu, G. m. b. H., German Patent 69, p. 620 (1940).
Freeman, S. E., U. S. Patent 2,200, pp. 390–91 (1940).
Kleinsmith, A. W., and Kraybill, H. R., Ind. Eng. Chem.,35, 674 (1943).
Craig, L. C., J. Biol. Chem.,155, 519 (1944).
Earle, F. R., and Milner, R. T., Oil and Soap17, 106 (1940).
Yamada, T., J. Soc. Chem. Ind. Japan, Suppl. Binding,37, 190 (1934).
Bull, W. C., and Wheeler, D. H., Oil and Soap,20, 137 (1943).
Hilditch, T. P., and Jones, E. C., J. Soc. Chem. Ind.,53, 13T (1934).
Goss, W. H., Ind. Eng. Chem.,40, 2247 (1948).
Author information
Authors and Affiliations
Additional information
One of the laboratories of the Bureau of Agricultural and Industrial Chemistry, Agricultural Research Administration. U. S. Department of Agriculture. This paper reports results obtained from a project financed principally by the Research and Marketing Act of 1946.
About this article
Cite this article
Dutton, H.J., Lancaster, C.R. & Brekke, O.L. Fractionation and structure of soybean glycerides. J Am Oil Chem Soc 27, 25–30 (1950). https://doi.org/10.1007/BF02634894
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02634894