NMR Self-diffusion Studies on the Interaction Between α-Cyclodextrin and Fatty Acids

Abstract

Abstract: The association between α-cyclodextrin and three kinds of short chain fatty acids was studied by NMR self-diffusion measurements. Dilute solution condition was adopted to avoid precipitating of the solutes. The diffusion coefficient of fatty acid in the solution, which reflects the strength of association between α-cyclodextrin and fatty acids, was found to decrease with increasing alkyl chain length of fatty acid. Together with 2D-ROESY experiment, therefore, it was demonstrated that in forming inclusion complex, the hydrophobic interaction is predominant among various possible interactions between α-cyclodextrin and fatty acids.

Key words: Cyclodextrin, NMR, Self diffusion, Fatty acid, Hydrophobic interaction, Equilibrium constant

CLC Number:

O631.1

TrendMD:

XU Min, ZHANG Hui-Ping, CHEN Qun . NMR Self-diffusion Studies on the Interaction Between α-Cyclodextrin and Fatty Acids[J]. Chem. J. Chinese Universities, 2004, 25(10): 1901.

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NMR Self-diffusion Studies on the Interaction Between α-Cyclodextrin and Fatty Acids

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