Mk. Dowd et al., LOW-MOLECULAR-WEIGHT ORGANIC COMPOSITION OF ETHANOL STILLAGE FROM SUGARCANE MOLASSES, CITRUS WASTE, AND SWEET WHEY, Journal of agricultural and food chemistry, 42(2), 1994, pp. 283-288
Filtered stillage from the distillation of ethanol made by yeast ferme
ntation of sugarcane molasses, citrus waste, and sweet whey was analyz
ed by gas chromatography/mass spectroscopy and by highperformance liqu
id chromatography. Nearly all of the major peaks representing low mole
cular weight organic components were identified. The major components
in cane stillage were, in decreasing order of concentration, lactic ac
id, glycerol, ethanol, and acetic acid. In citrus stillage they were l
actic acid, glycerol, myo-inositol, acetic acid, chiro-inositol, and p
roline., Finally, in whey stillage the major components were lactose,
lactic acid, glycerol, acetic acid, glucose, arabinitol, and ribitol.