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Trends in Chemical Engineering   Volumes    Volume 16 
Purification and identification of sucrose polyesters
M. J. Barrionuevo, N. Samman
Pages: 85 - 95
Number of pages: 11
Trends in Chemical Engineering
Volume 16 

Copyright © 2017 Research Trends. All rights reserved

Sucrose polyesters (SPE) were obtained in the laboratory from methyl oleate, sucrose and an alkaline catalyst. The reaction was performed under reduced pressure at 180 ºC for 6 hours. A product containing 60% SPE was obtained. It was purified by first neutralizing it with acetic acid to a pH of 7, and was subsequently extracted with water. The water-insoluble phase was in turn extracted with methanol, yielding a methanol-insoluble product containing 67% SPE. It was dissolved in 90/10 hexane/ethyl ether mixture and passed through a column of silica gel. SPEf was identified using infrared spectroscopy (IR), gas chromatography (GC), 13C NMR and 1H NMR. Olestra (Ol), a sucrose polyester, extracted from a commercial product, was used as the reference compound. It was concluded that SPEf has sucrose esterified with eight molecules of fatty acid, mainly with oleic acid.
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