New integrated refining process for edible oils

Abstract

Summary Dust‐free solvent meal can be produced by pretreating meats with granular soda ash prior to oil extraction, addition of foots from miscella‐refining operation to meal, and screening meal from dryers prior to grinding, then grinding only overs and blending with screened meal. By exclusion of air and light and by properly coordinating the miscella refining procedure, light‐colored, soap‐free oil can be produced, using low Baumé lye. Refined miscella can be winterized in a short enough time to warrant doing it in a continuous plant, giving yields and chill tests comparable to or better than conventionally winterized oil. A continuous deodorizer followed by continuous injection of nitrogen into the deodorized, cooled salad oil protects the oil from oxidation in this integrated, continuous salad‐oil plant.