Production of fats and oils from vegetable and animal products
US4331695A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1977 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Feb 16, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B1/104
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.