Affinity of Cyclodextrins to Hydroperoxides

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Abstract
Inclusion complexes of α-, β-, and γ-cyclodextrins with tetralin, methyl oleate, methyl linoleate, and methyl linolenate were prepared, and their molar ratios of cyclodextrins to substrates of the inclusion complexes were determined. The affinity of cyclodextrins to the hydroperoxides of the substrates is discussed. Small amounts of aqueous cyclodextrin solutions were added to autoxidized substrates with stirring to obtain the inclusion complexes. POV of the remaining substrates was found to be less than that of the initial POV. This indicates the cyclodextrins to encase hydroperoxides preferentially from autoxidized substrates. To lessen the POV of tetralin, treatment with β-, or γ-cyclodextrins was much more effective than α-cyclodextrin. The most noticeable effect was obtained on using β-cyclodextrin as the host. γ-cyclodextrin was the most potent for lowering the POV of methyl oleate and methyllinolenate, and α-cyclodextrin for methyl linoleate.

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