Summary
In a study of the position-species and fatty-acid compositions of the glyceride fractions of the oils of the seeds ofN. cataria andE. moluccelloides, desorbed from silica gel and fromneutral Al2O3, it was found that on Al2O3 isomerization of the TGs takes place with a change in their fatty acid composition consisting in the migration of acyl groups from positions 1 and 3 to position 2 both within the molecule and between the molecules of the TGs.
These properties exclude the use of this sorbent for the isolation and purification of the glyceride fractions with the aim of establishing their molecular structure.
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Literature cited
R. A. Stein and V. Slawson, Progr. Chem. Fats and Other Lipids,8, No. 3, 380 (1966); C. Litchfield, Analysis of Triglycerides, Academic Press, New York (1972), p. 161; W. W. Christie, Lipid Analysis, Pergamon, Oxford (1976), p. 56.
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Kh. Karshiev, L. A. Shustanova, and S. T. Akramov, Khim. Prirodn. Soedin., 90 (1976); Kh. Karshiev, L. A. Shustanova, and S. T. Akramov, Khim. Prirodn. Soedin., 653 (1976).
T. V. Panekina, S. D. Gusakova, M. Ya. Tabak, and A. U. Umarov, Khim. Prirodn. Soedin., 44 (1978).
T. V. Panekina, S. D. Gusakova, and A. U. Umarov, Khim. Prirodn. Soedin., No. 2 (1978).
Additional information
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 310–313, May–June, 1978.
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Gusakova, S.D., Panekina, T.V. & Umarov, A.U. Acyl isomerization of triglycerides during their chromatography on Al2O3 . Chem Nat Compd 14, 257–259 (1978). https://doi.org/10.1007/BF00713310
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DOI: https://doi.org/10.1007/BF00713310