Cooking oil refining refers to a series of refining processes that can remove phospholipids, FFA, pigment, off-flavor and other impurities in the oil.The process of removing these impurities is called oil refining. Only in this way,the finally oil will be more palatable and stable .Refined oil product can avoid rancidity and convenience storage.
Cooking oil reifning methods
Usually there are two methods in cooking oil refining plant, one is chemical refining, the other is physical refining. Physical and chemical refining is defined according to the technology used. Physical refining means the removal of gum in oil via the process of degumming, a special method for removing FFA in the process of deodorization by steam. Chemical refining, however, means chemically removing FFA (acid-base neutralization). Gum and soap produced is then separated by centrifuges.
