食品科学 ›› 2009, Vol. 30 ›› Issue (9): 62-65.doi: 10.7506/spkx1002-6630-200909014

• 基础研究 • 上一篇    下一篇

ADS-8树脂静态吸附儿茶素的研究

李慧星,许 彬,肖连冬,杨 杰   

  1. 南阳理工学院生物与化学工程学院
  • 收稿日期:2008-07-02 出版日期:2009-05-01 发布日期:2010-12-29
  • 通讯作者: 李慧星 E-mail:comet686@163.com

Study on Static Adsorption of Resin ADS-8 to Catechins

LI Hui-xing XU Bin XIAO Lian-dong YANG Jie   

  1. Institute of Biology and Chemical Engineering, Nanyang Institute of Technology, Nanyang 473004, China
  • Received:2008-07-02 Online:2009-05-01 Published:2010-12-29
  • Contact: LI Hui-xing E-mail:comet686@163.com

摘要:

目的:以信阳毛尖茶叶的浸提液为原料,研究ADS-8树脂吸附儿茶素的特性。方法:在静态条件下,考察吸附时间、温度、pH值对吸附量的影响。结果:ADS-8树脂吸附儿茶素的等温线方程为qe=9.5486 Ce1/1.207;吸附速率与粒扩散控制的半经验公式能较好拟合,方程为ln(1-α)=-0.0534t;温度对吸附量的影响达显著水平(F=95.753>F0.05=3.48),选择30℃最佳;pH值对吸附量的影响不显著(F=0.754<F0.05=3.48)。结论:儿茶素在ADS-8树脂上的吸附服从于Freundlich方程,吸附速率常数Kp=0.0534,温度是显著因素,而pH值是不显著因素。

关键词: 儿茶素, ADS-8树脂, 吸附

Abstract:

Objective: To study the static adsorption characteristics of resin ADS-8 to catechins from Xinyang Maojian tea extract. Methods: The adsorption isotherm and adsorption rate constant of resin ADS-8 to catechins were determined, and the effects of pH value and temperature on adsorption quantity of ADS-8 resin to catechins were investigated. Results: The adsorption isotherm equation is qe=9.5486 Ce1/1.207, obeying Freundlich equation. The equation of adsorption rate is ln(1-α)= -0.0534t; Temperature affects significantly the adsorption quantity (F=95.753 > F0.05=3.48), and 30 ℃ is the best. pH value is an inapparent affecting factor (F=0.754 < F0.05 =3.48).

Key words: catechins, resin ADS-8, adsorption

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