盐酸黄连素与β-环糊精在水溶液中的理化性质研究（英文）  

Study of the physicochemical properties of berberine hydrochloride with β-cyclodextrin in aqueous solution

作　　者：熊晓莉[1,2] 李宁[1,2] XIONG Xiao-li;LI Ning(National Experimental Teaching Demonstration Center of Environmental and Resource Chemical Technology,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Key Laboratory on Nature Medicine Research of University,Chongqing Technology and Business University,Chongqing 400067,China)

机构地区：[1]重庆工商大学环境与资源化学技术国家级实验教学示范中心,重庆400067 [2]重庆工商大学天然药物研究重庆市高校重点实验室,重庆400067

出　　处：《化学研究与应用》2018年第8期1303-1309,共7页Chemical Research and Application

基　　金：重庆市科学技术委员会基础科学与前沿技术研究(cstc2016jcyj A2300)资助;中央财政支持地方高校改革发展专项资金环境与能源催化创新团队建设项目(渝财教(2017)91号)资助

摘　　要：对β-环糊精(β-CD)和盐酸黄连素(Berb)之间的包合作用进行了研究。在水相介质中,用紫外光谱和相溶解度法测定了二者之间的表观稳定常数K。用差示扫描量热法(DSC)、傅立叶变换红外光谱(FT-IR)和X射线衍射(XRD)研究了包合物的物理化学性质。相溶解度曲线表明,Berb的溶解度随β-CD浓度的增加而增加,为AL型曲线,表明二者之间形成1∶1的化学计量比的包合物。利用相溶解度曲线,计算了在293K和310K时包合过程的热力学参数。标准的吉布斯自由能变化值在298K、310 K时分别为-10.3 k J mol-1、-10.6k J mol-1,表明包合过程是自发进行的。利用分子模型程序,探讨了β-CD和Berb间的包合机理,并结合FT-IR分析结果,推测Berb的二甲氧基基团通过β-CD尾区进入CD的空穴中。该研究为β-CD和Berb包合物的工业化生产提供了实验依据。he inclusion interactions ofβ-cyclodextrin(β-CD)and berberine hydrochloride(Berb)were investigated in the present study.In aqueous solution,apparent stability constant was determined by UV spectroscopy and phase-solubility technique.The physicochemical characterization of inclusion complex was investigated by differential scanning calorimetry(DSC),Fourier transform-infrared(FT-IR)and X-ray diffraction(XRD).Phase-solubility profile indicated that the solubility of Berb was significantly increased in the presence ofβ-CD and classified as A L-type that indicated the 1∶1 stoichiometric inclusion complex.Thermodynamic parameters of the complex process were determined from the phase solubility diagram.The standard Gibbs energy changes were-10.3 kJ mol^-1 at 298K and-10.6 kJ mol^-1 at 310 K,respectively,which indicated that the complex process was spontaneous.Mechanism of the complex ofβ-CD with Berb was further discussed by the molecular model program,and combined with the results of FT-IR analysis,which showed that the dimethoxy groups of Berb were introduced through the tail region of the cavity ofβ-CD.This study could provide experimental data for industrial production ofβ-CD and Berb complex.

关 键 词：盐酸黄连素 Β-环糊精 包合物 相互作用 

分 类 号：O636[理学—高分子化学] O64[理学—化学]