Summary
The relationship between tocopherol content, fatty acid composition, and autoxidative stability has been investigated for a series of three cottonseed oils representing a commercially refined and bleached oil, the same oil after winterization, and the corresponding stearine press cake. The results indicate that an increase occurs in unsaturation of the glycerides, which is accompanied by an increase in the tocopherol content of the winterized, compared to the unwinterized oil. The reverse is true of the stearine press cake fraction. The changes in fatty acid composition and tocopherol content are such that they tend to counterbalance one another and lead to the same final autoxidative stability in each product. The red and yellow color components of the products are unaffected by the winterization process.
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One of the laboratories of the Bureau of Agricultural and Industrial Chemistry, Agricultural Research Administration, U. S. Department of Agriculture.
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Mack, C.H., Moore, R.N. & Bickford, W.G. Effect of winterization on the composition and stability of cottonseed oil. J Am Oil Chem Soc 29, 14–16 (1952). https://doi.org/10.1007/BF02640172
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DOI: https://doi.org/10.1007/BF02640172