# US 5,700,509 A · Method of fractionating an edible oil containing 2-palmitoyl-1,3-dioleylglycerol

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- Number: US 5,700,509 A
- Document ID: US5700509A
- Status: Granted
- Kind: A
- Application number: 08/335,125
- Filed: 1994-11-07
- Granted: 1997-12-23
- Earliest claimed: 1993-11-24
- Assignees: Snow Brand Milk Products Co., Ltd.
- Inventors: Mototake Murakami; Seiichiro Aoe; Kiyoshi Tatsumi
- Web page: https://patentgrep.com/patent/US5700509A

## CPC

- A23D 9/00: Other edible oils or fats, e.g. shortenings or cooking oils (preservation of other edible oils A23B20/30)
- C11B 7/0025: {in solvents containing oxygen in their molecule}
- A23D: EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS OR COOKING OILS (preservation thereof A23B20/00; production, refinement or preservation of animal or vegetable fats or oils C11B, C11C)
- C11B: PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES (drying-oils C09F)

## Abstract

The present invention provides a well-digestible and well-absorbable edible oil and fat composition containing 20% by weight or more 2-palmitoyl-1,3-dioleylglycerol. Also a process for production of the above edible oil and fat composition which comprises fractionating the edible oil and fat composition to increase the content of 2-palmitoyl-1,3-dioleylglycerol to 20% by weight or more is disclosed. The edible oil and fat composition of the present invention is useful as a fat material used in diets for infants or for the sick.

## Claims

### Claim 1

A process for producing an easily-digestible and easily-absorbable edible oil or fat composition which contains 20% by weight or more 2-palmitoyl-1,3-dioleylglycerol, said process comprising:
a. providing an edible oil or fat containing at least about 5% by weight, but less than 20% by weight, of 2-palmitoyl-1,3-dioleylglycerol,
b. contacting the oil or fat with an organic solvent at a temperature at which the oil or fat is dissolved in the solvent thereby forming a liquid mixture;
c. cooling the mixture at a rate of not more than about 1.degree. C. per hour to a reduced temperature thereby causing a portion of the oil or fat to solidify and maintaining the mixture at said reduced temperature; and
d. separating the solid oil or fat from the mixture;
wherein the liquid oil or fat remaining after step (d) comprises about 20% by weight or more of2-palmitoyl-1,3-dioleylglycerol.

### Claim 2 (depends on 1)

The process according to claim 1 wherein the oil or fat composition containing at least about 5% by weight but less than 20% by weight, of 2-palmitoyl-1,3-dioleylglycerol is lard, palm oil or a hydrogenated and ester exchanged oil or fat thereof.

### Claim 3 (depends on 2)

The process according to claim 2, wherein the solvent is acetone.

### Claim 4 (depends on 1)

The process of claim 1 wherein step (c) is carried out by cooling the mixture to a temperature of about 25.degree. C. or less, and maintaining the mixture at the temperature for a time sufficient for the oil or fat portion to solidify.

### Claim 5 (depends on 1)

The process of claim 1 wherein the mixture is maintained at the reduced temperature for at least 24 hours.

### Claim 6 (depends on 1)

The process of claim 1 wherein step (d) is carried out by filtering the mixture to remove the solid oil or fat.

### Claim 7 (depends on 1)

The process of claim 1 further comprising after step (d), the step of removing the solvent from the liquid oil or fat.