LOW-MOLECULAR-WEIGHT ORGANIC COMPOSITIONS OF ACID WATERS FROM VEGETABLE OIL SOAPSTOCKS

Alkaline extracts (soapstocks) from canola, corn, cottonseed, peanut, soybean, and sunflower oil refining were acidified, and identities and concentrations of the low-molecular weight organic components of the resulting acid waters were determined by gas chromatography, followed by mass spectroscopy, and by high-performance liquid chromatography. T he main components of each acid water sample, in order of decreasing c oncentration and after omitting the fermentation product lactic acid, were phosphoric acid, alpha-glycerophosphate, and glycerol from canola ; myo-inositol, phosphoric acid, alpha-glycerophosphate, and myo-inosi tol-1-phosphate from corn; glycerol, alpha-glycerophosphate, myo-inosi tol-1-phosphate, and beta-glycerophosphate from cottonseed; phosphoric acid, glycerol, and myo-inositol from peanut; alpha-glycerophospho-1- myo-inositol, myo-inositol-1-phosphate, alpha-glycerophosphate, and gl ycerol from soybean; and alpha-glycerophosphate, glycerol, myo-inosito l-1-phosphate, and beta-glycerophosphate from sunflower.