Oil Extraction and Refining

January 27, 2012

Oil extraction involves pressing the oil bearing material to separate crude oil from the solids high in protein or washing flaked or modestly pressed material with solvent, almost always hexane. The defatted solids after pressing are known as cake and after solvent extraction as meal. The oil, crude oil because it contains undesirable components, such […]

Fat and Oil

January 19, 2012

Definition of lipid is “a wide variety of natural products including fatty acids and their derivatives, steroids, terpenes, carotenoids and bile acids, which have in common a ready solubility in organic solvents such as diethyl ether, hexane, benzene, chloroform or methanol.” (Christie, 1982 in O’Keefe, 2002). The terms fats and oils are used interchangeably, and […]