大孔树脂对八月瓜果皮总三萜的吸附特性研究  

Adsorption Characteristic of Total Triterpenes in Akebia Trifoliata Pericarp by Macroporous Resin

作　　者：李雪峰[1] 符智荣[1] 张晓旭[2] 欧阳玉祝[2] 

机构地区：[1]吉首大学师范学院 [2]吉首大学化学化工学院,吉首416000

出　　处：《天然产物研究与开发》2017年第12期1999-2003,共5页Natural Product Research and Development

基　　金：湖南省湘西自治州科技计划(2013-7)

摘　　要：研究XDA-1型大孔树脂对八月瓜果皮总三萜的吸附特性。采用准一级动力学方程、准二级动力学方程、Van't Hoff方程和吸附等温方程研究吸附动力学与吸附热力学参数。结果表明,XDA-1大孔树脂对八月瓜果皮中总三萜的吸附符合准二级动力学方程描述;吸附等温线符合Freundlich等温吸附方程;吸附焓变ΔH=-1.2792 kJ/mol,为物理吸附;吉布斯自由能ΔG<0,吸附过程是自发过程;吸附熵变ΔS>0,表明吸附是熵值增加的过程。The adsorption characteristic of total triterpenes in Akebia Trifoliata pericarp was researched by XDA-1 macro- porous resin. Adsorption dynamics and thermodynamic parameters were investigated by pseudo-first-order, pseudo-sec- ond-order model, Van＇ t Hoff equation and adsorption isoatherms. The results showed that adsorption of total triterpenes by XDA-1 macroporous resin is pseudo-second-order kinetics equation. The adsorption isotherm is freundlich adsorption isotherm equation. Its enthalpy changes AH = -1. 2792 kJ/mol, and is physical adsorption process. Gibbs free energy changes AG 〈 0 indicated that the absorption is a spontaneous process. The entropy changes AS 〉 0 demonstrated that the absorption process is the process of entropy increase.

关 键 词：八月瓜 总三萜 大孔树脂 动力学 热力学 

分 类 号：TS202.3[轻工技术与工程—食品科学] TQ28[轻工技术与工程—食品科学与工程]