Process for preparing 2-acylglycerides or 1,2 or 2,3-diacylglyce

Details Process for preparing 2-acylglycerides or 1,2 or 2,3-diacylglyce Process for preparing 2-acylglycerides or 1,2 or 2,3-diacylglyce

1990-04-20

1992-09-22

Robinson, Douglas W.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing oxygen-containing organic compound

435134, 435198, C12P 764, C12P 762, C12N 920

Patent

active

051496429

ABSTRACT:
A process for the selective hydrolysis of triglycerides to mixtures of 1,3 or 2,3-diacyl glycerides and 2-acyl glycerides is disclosed. This process uses an alkyl alcohol selected from the group consisting of 2-methyl-2-propanol, 2-butanol and the primary, secondary or tertiary branched or straight chain alkyl alcohols having from 5 to 8 carbon atoms, and mixtures thereof, an aqueous buffer system and a 1,3-lipase. The 2-acyl glycerides in the mixture are esterified to make stereospecific 1,2-diacyl glycerides or 2,3-diacyl glycerides with acid anhydrides and a lipase catalyst. Under the reaction conditions, there is little rearrangement of the diacyl glycerides in the mixture and less than 20% triglyceride is formed. Stereospecific 1,2,4-triglycerides can be made from these materials by standard esterification reactions under conditions which control rearrangement.

REFERENCES:
patent: 4865978 (1989-09-01), Serota
El-Nokaly et al., ed., Microemulsions and Emulsions in Foods, Chapter 5, pp. 51-61, American Chemical Society, 1991.
Lazars et al., Proc.-World Conference on Emerging Technologies in the Fats and Oil Industry, "Synthesis of Esters by Liposes", pp. 346-354, 1986.
Grant and Hackh's, Chemical Dictionary, Fifth Edition, p. 40, 1987.
Meusel et al., Chemical Abstracts 109(12), Abstract No. 95091m, p. 102, 1988.

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