Production of fats and oils from vegetable and animal products

Details Production of fats and oils from vegetable and animal products Production of fats and oils from vegetable and animal products

1977-02-16

1982-05-25

Naff, David M.

Food or edible material: processes, compositions, and products

Processes

Extraction utilizing liquid as extracting medium

426417, 426429, 2604124, 2604128, A23L 120, C09F 502, C11B 110

Patent

active

043316956

ABSTRACT:
Fats or oils are extracted from animal or vegetable products by a process of contacting the product with a solvent in the liquid phase and at a temperature below the critical temperature of the solvent to extract fat or oil from the product, separating the solvent containing extracted fat or oil from the residue of the product, and precipitating the extracted fat or oil from the solvent by heating the solvent to above the critical temperature of the solvent without taking up heat of vaporization. The resultant precipitated fat or oil contains no more than 3 ppm of solvent which makes the fat or oil suitable for use in foodstuffs without further processing to remove solvent. The temperatures of the solvent may be 0.degree.-100.degree. C. during extraction and 50.degree.-200.degree. C. during precipitation, and the pressure may be the same during extraction and precipitation.

REFERENCES:
patent: 2548434 (1951-04-01), Leaders
patent: 2560935 (1951-07-01), Dickinson
patent: 2682551 (1954-06-01), Miller
patent: 3843824 (1974-10-01), Roselins et al.
patent: 3939281 (1976-02-01), Schwengers

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