Abstract
The association constant K for the host-guest complex comprised of sanguinarine/dansyl-glycine-β-cyclodextrin was found to be 5.75 × 105 M. The sensitivity factor(γ), which is defined as the ratio of the change of the fluorescence intensity after complex formation to the intensity of free, uncomplexed dansyl-glycine-β-cyclodextrin, showed an almost linear dependence on analyte concentration up to 50μM sanguinarine. This molecular recognition system can be exploited to rapidly estimate the total concentration of benzophenanthridine alkaloids in suspension cultures of Eschscholtzia californica. © Rapid Science Ltd. 1998
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