食品科学 ›› 2010, Vol. 31 ›› Issue (15): 107-111.doi: 10.7506/spkx1002-6630-201015024

• 基础研究 • 上一篇    下一篇

微波辅助萃取柠檬皮中果胶动力学及热力学研究

章 凯,黄国林* ,陈中胜,黄德娟,傅哪哪   

  1. 东华理工大学化学生物与材料科学学院
  • 收稿日期:2010-01-05 修回日期:2010-05-19 出版日期:2010-08-15 发布日期:2010-12-29
  • 通讯作者: 黄国林 E-mail:guolinhuang@sina.com
  • 基金资助:

    江西省自然科学基金项目(2009GZH0004);江西省教育厅青年基金(GJJ09527)

Microwave-assisted Extraction Kinetics and Thermodynamics of Pectin from Lemon Peel

ZHANG Kai,HUANG Guo-lin*,CHEN Zhong-sheng,HUANG De-juan,FU Na-na   

  1. College of Chemistry, Biology and Material Science, East China Institute of Technology, Fuzhou 344000, China
  • Received:2010-01-05 Revised:2010-05-19 Online:2010-08-15 Published:2010-12-29
  • Contact: HUANG Guo-lin*, E-mail:guolinhuang@sina.com

摘要:

采用离子液体氯化1- 丁基-3- 甲基咪唑水溶液为萃取剂,对微波辅助萃取柠檬皮中果胶的动力学及热力学进行研究。以Fick 扩散第二定律为理论基础,采用分离变量法建立果胶提取动力学方程,并推算出速率常数k、活化能Ea、焓变ΔH0、熵变ΔS0 和自由能变ΔG0 等动力学和热力学函数值。

关键词: 微波辅助萃取, 果胶, 动力学, 热力学

Abstract:

The kinetic and thermodynamic mechanisms of the extraction process of pectin from lemon peel using 1-butyl-3- methylimidazolium chloride aqueous solution as extractant under microwave assistance were investigated. Based on the theory of Fick s second law, a dynamic model of pectin extraction was deduced by using the method of isolated variables and rate constantk, activation energy Ea, enthalpy change ΔH0, entropy change ΔS0 and free energy change ΔG0 were calculated. This model provides a valuable theory basis for the selection of optimum technological conditions for pectin extraction.

Key words: microwave-assisted extraction, pectin, kinetic, thermodynamic

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