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US 4,357,353 AGranted
Process for the production of an emulsifier based on lecithin and product thereof
AssigneeLucas Meyer GmbH & Co.
InventorsKuno Strauss, Alice Nasner
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Abstract
The invention relates to a process for the preparation of an emulsifier from lecithin base by solvent extraction followed by precipitation.
Claims12
A process for producing an emulsifier from lecithin base by solvent extraction, comprising treating a phospholipid mixture which contains phosphatidylcholine (Pc) and phosphatidylethanolamine (Pe) dissolved in alcohol with sufficient water to cause the partial precipitation of undissolved components of the phospholipid mixture whereafter said components are separated and dried.
An emulsifier having the following physico-chemical parameters:
- (1) ratio between Pc and Pe from 7:3 to 6:1, preferably 4:1,
- (2) Pc content from 65 to 85% by weight, preferably from 75 to 80% by weight,
- (3) residual fat content less than 2%,
- (4) pyrogen-free in the rabbit test according to the European Pharmacopoeia (1975) vol. 2, page 56 et seqq.,
- (5) clearly soluble in ethanol at 5% concentration,
- (6) clearly soluble in chloroform at 10% concentration,
- (7) maximum water content 2.5%, preferred maximum 1%,
- (8) maximum peroxide number 5, preferred maximum 1 (determined according to the DGF standard method F-1 3b (68).
5 more elements
Dependencies are inferred from the claim text.