Process for recovering symmetrical diglycerides from glyceride m

Details Process for recovering symmetrical diglycerides from glyceride m Process for recovering symmetrical diglycerides from glyceride m

1975-10-06

1977-04-19

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604107, 260426, 426429, 426601, 426607, C11B 700, C07C 6930

Patent

active

040188060

ABSTRACT:
A process for recovering symmetrical diglycerides from mixtures of mono-, di- and triglycerides is disclosed. The process comprises forming a solution of a glyceride mixture having from 5% to 60% triglyceride, from 15% to 70% symmetrical diglyceride, from 1% to 40% asymmetrical diglyceride and from 8% to 50% monoglyceride in a mixture of non-polar and polar organic solvents in a ratio of 2:1 to 20:1; inducing and maintaining crystallization of the symmetrical diglyceride, e.g., by cooling, while maintaining the temperature of the mixture below the saturation temperature of the symmetrical diglyceride and above the saturation temperature of the remaining components of the glyceride mixture; and recovering solid symmetrical diglyceride product. The process permits recovery of symmetrical diglyceride in a single crystallization step and in high purity.

REFERENCES:
patent: 2626952 (1953-01-01), Lange et al.
patent: 2682550 (1954-06-01), Young et al.
patent: 2740799 (1956-04-01), Young et al.
patent: 3012890 (1961-12-01), Sutton et al.
Journal of American Oil Chemists Society, vol. 48, No. 3, Mar., 1971, pp. 116-120--N. V. Lovegrem et al.

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