The inclusion interactions between flavonoids and β cyclodextrin( β CD) and its derivatives have been studied by a phase solubility method. The phase solubility graphs showed that the 1∶1 inclusion compounds were f...The inclusion interactions between flavonoids and β cyclodextrin( β CD) and its derivatives have been studied by a phase solubility method. The phase solubility graphs showed that the 1∶1 inclusion compounds were formed beween β CD and rutin, qucertin and morin respectively. The compounds appeared to be a type of A L inclusion. β CD derivatives have stronger binding capacity than β CD. The enhanced solubility of compounds decreased in the order methyl β CD>hydroxypropyl β CD> β CD. The highest solubility was obtained in methyl β CD inclusion complex with qucertin in level of 50 times than that in water.展开更多
The stability constants of inclusion complexes of some benzene derivations with β cyclodextrin (β CD) in aqueous solution were studied by ultraviolet spectrophotometry at 20℃,30℃,40℃ and 50℃,respectively.The app...The stability constants of inclusion complexes of some benzene derivations with β cyclodextrin (β CD) in aqueous solution were studied by ultraviolet spectrophotometry at 20℃,30℃,40℃ and 50℃,respectively.The apparent thermodynamic parameters were also obtained.The results demonstrated that van der Waals force (Δ H <0,Δ S <0,governed by Δ H ) is the major driving force of inclusion systems of benzene derivations with β CD.On the other hand,in the case of inclusion complex of vanillin,the hydrogen bonding may also play a role in complexation.展开更多
Catalytic determination of glucose with β-Cyclodextrin derivant was constructed by the reaction of β CD,maleic anhydride with iron trichloride in hydrogen peroxide.The method is simple and convenient.The sensitivity...Catalytic determination of glucose with β-Cyclodextrin derivant was constructed by the reaction of β CD,maleic anhydride with iron trichloride in hydrogen peroxide.The method is simple and convenient.The sensitivity and reproducibility is ideal.The linear range is 30～160mg·L -1 ,the RSD is 0 404%(n=8).展开更多
文摘The inclusion interactions between flavonoids and β cyclodextrin( β CD) and its derivatives have been studied by a phase solubility method. The phase solubility graphs showed that the 1∶1 inclusion compounds were formed beween β CD and rutin, qucertin and morin respectively. The compounds appeared to be a type of A L inclusion. β CD derivatives have stronger binding capacity than β CD. The enhanced solubility of compounds decreased in the order methyl β CD>hydroxypropyl β CD> β CD. The highest solubility was obtained in methyl β CD inclusion complex with qucertin in level of 50 times than that in water.
文摘The stability constants of inclusion complexes of some benzene derivations with β cyclodextrin (β CD) in aqueous solution were studied by ultraviolet spectrophotometry at 20℃,30℃,40℃ and 50℃,respectively.The apparent thermodynamic parameters were also obtained.The results demonstrated that van der Waals force (Δ H <0,Δ S <0,governed by Δ H ) is the major driving force of inclusion systems of benzene derivations with β CD.On the other hand,in the case of inclusion complex of vanillin,the hydrogen bonding may also play a role in complexation.
文摘Catalytic determination of glucose with β-Cyclodextrin derivant was constructed by the reaction of β CD,maleic anhydride with iron trichloride in hydrogen peroxide.The method is simple and convenient.The sensitivity and reproducibility is ideal.The linear range is 30～160mg·L -1 ,the RSD is 0 404%(n=8).
