Sl. Johansen et al., LOW-MOLECULAR-WEIGHT ORGANIC COMPOSITIONS OF ACID WATERS FROM VEGETABLE OIL SOAPSTOCKS, Journal of the American Oil Chemists' Society, 73(10), 1996, pp. 1275-1286
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.