紫外分光光度法研究β-环糊精与红景天苷的相互作用

上海大学学报(自然科学版) ›› 2010, Vol. 16 ›› Issue (2): 174-176.

紫外分光光度法研究β-环糊精与红景天苷的相互作用

王绮,王田霖

上海大学理学院，上海 200444

收稿日期:2008-07-03 出版日期:2010-04-20 发布日期:2010-04-20
通讯作者: 王绮（1962～），女，讲师，研究方向为分析化学. E-mail:university_wang@163.com

Interaction Between Salidroside and β-Cyclodextrin by UV Spectrometry

WANG Qi, WANG Tian-Lin

College of Sciences, Shanghai University, Shanghai 200444, China

Received:2008-07-03 Online:2010-04-20 Published:2010-04-20

摘要/Abstract

摘要：

根据红景天苷的吸光度随β-环糊精（β-CD）浓度的增加而增加，但其最大吸收波长不变的性质，研究温度对包合形成常数的影响，计算得到某些热力学常数，并讨论了包合过程的驱动力.结果显示，形成常数随温度升高而增大，整个包合过程是焓、熵联合驱动的过程，其中疏水作用为主要驱动力.

关键词: 红景天苷;紫外分光光度法;β-环糊精（β-CD）;包合形成常数

Abstract:

Interaction between salidroside and β-cyclodextrin（β-CD） was studied with UV spectrometry based on the fact that the absorption peak position of salidroside is kept unchanged but the absorbance increased with the increase of β-CD concentration. The formation constants of the inclusion complexes are determined and effects of temperature on equilibrium constants examined, from which the thermodynamic parameters were calculated, and driving forces of formation of inclusion complex are discussed. The results imply that complexation is enthalpically and entropically favourable and driven mainly by hydrophobic interaction.

Key words: salidroside; UV spectrometry; β-cyclodextrin (β-CD); formation constant of inclusion complex

中图分类号:

R 965

王绮,王田霖. 紫外分光光度法研究β-环糊精与红景天苷的相互作用[J]. 上海大学学报(自然科学版), 2010, 16(2): 174-176.

WANG Qi, WANG Tian-Lin. Interaction Between Salidroside and β-Cyclodextrin by UV Spectrometry[J]. Journal of Shanghai University（Natural Science Edition）, 2010, 16(2): 174-176.