title: Study on vitamin K3-cyclodextrin inclusion complex and analytical application.
abstract: The inclusion interaction of the complexes between Vitamin K(3) (VK(3)) and beta-cyclodextrin (beta-CD), hydroxypropyl-beta-cyclodextrin (HP-beta-CD) and sulfobutylether-beta-cyclodextrin (SBE-beta-CD) were studied by using steady-state fluorescence measurements. The various factors affecting the inclusion process were examined in detail. The formation constants and inclusion stoichiometry for VK(3)-CDs were determined. The results showed that the inclusion ability of beta-CD and its derivatives was the order: SBE-beta-CD>HP-beta-CD>beta-CD. The related inclusion mechanism is proposed to explain the inclusion process. A method of determining VK(3) was established with the linear range was 2.5 x 10(-6)-5.0 x 10(-4) M, and was used to determine the VK(3) tablets. The recoveries were in the range of 97.52-103.5%. The results were satisfactory.
authors.affiliation: Department of Chemistry, Shanxi University, Taiyuan 030006, PR China.
authors.forename: Dong
authors.initials: D
authors.lastname: Zhenming
authors.forename: Liu
authors.initials: L
authors.lastname: Xiuping
authors.forename: Zhang
authors.initials: Z
authors.lastname: Guomei
authors.forename: Shuang
authors.initials: S
authors.lastname: Shaomin
authors.forename: Pan
authors.initials: P
authors.lastname: Jinghao
mesh_terms: D003505:Cyclodextrins / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D013050:Spectrometry, Fluorescence; D024483:Vitamin K 3 / Q000737:chemistry*
chemical_list: D003505:Cyclodextrins; D024483:Vitamin K 3