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KMID : 0380619930250020148
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Korean Journal of Food Science and Technology
1993 Volume.25 No. 2 p.148 ~ p.153
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Composition and Structure Confirmation of Glucitol Fatty Acid Polyesters
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공운영/Kong, Un Young
김정한/윤희남/정하열/Kim, Jung Han/Yoon, Hee Nam/Chung, Ha Yull
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Abstract
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Composition and structure of synthetic glucitol fatty acid polyesters (GPE)-a potential fat substitute were investigated. Also degree of substitution (D.S) of GPE was determined according to the relative ester distribution within it to evaluate the feasibility of GPE using as a fat substitute. The GPE was separated into single ester group by a normal-phase HPLC and D.S of it was identified to be 6. Absorption band at 1747 cm^(-1) in the IR spectrum of GPE indicated that there were ester bonds within GPE molecules. which link fatty acid moiety to glucitol. Disappearance of the hydroxyl proton signals of glucitol in the H-NMR spectrum of GPE implied that most of hydroxyl groups in glucitol participated in the formation of ester bonds with fatty acids. In addition the D.S estimated from the quantitative proton integration of GPE coincided well with the D.S of GPE determined by hydroxyl value measurement. In conclusion, the GPE synthesized in this study was found to be a glucitol tatty acid hexaester so that it is expected to be used as a fat substitute in the near future.
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