Alan J Walters

US Patent:

59809647, Nov 9, 1999

Filed:

Jun 18, 1998

Appl. No.:

9/099540

Inventors:

Alan Walters - Thornton CO
Justin Dodds - Arvada CO

Assignee:

Gilroy Foods, d/b/a/ConAgra Corporation - Arvada CO

International Classification:

A23D 900

US Classification:

426417

Abstract:

A method of extracting from an oil bearing product at below a select temperature. The method includes providing an oil bearing product at a temperature at or below the select temperature. A liquid extraction solvent that is a gas under standard temperature and pressure is provided, with the extraction solvent being maintained at a temperature below its boiling point at ambient pressure and below the select temperature and at substantially ambient pressure. The oil bearing product is contacted with the extraction solvent at ambient pressure for a period sufficient to extract a select amount of the oil from the oil bearing product resulting in a reduced oil content product and an oil bearing extraction solvent. Residual extraction solvent is removed from the reduced oil content product at a removal pressure sufficiently below standard atmospheric pressure that the boiling point of the extraction solvent is below the select temperature and at a temperature between the boiling point of the extraction solvent at the removal pressure and the select temperature.