食品科学 ›› 2012, Vol. 33 ›› Issue (17): 64-67.

• 基础研究 • 上一篇    下一篇

干燥过程中甘蓝叶绿素降解动力学的研究

王冬梅1,江连洲1,*,赵晓燕2,张 超2,马 越2,郑淑芳2   

  1. 1.东北农业大学食品学院 2.北京市农林科学院蔬菜研究中心
  • 收稿日期:2011-08-12 修回日期:2012-07-16 出版日期:2012-09-15 发布日期:2012-11-09
  • 通讯作者: 江连洲 E-mail:jianglanzhou@nercv.org
  • 基金资助:

    现代农业产业技术体系

Kinetic Model of Chlorophyll Degradation in Cabbage during Drying Process

  • Received:2011-08-12 Revised:2012-07-16 Online:2012-09-15 Published:2012-11-09

摘要: 研究甘蓝叶绿素在干燥过程中的降解规律,建立其降解动力学模型,探讨甘蓝漂烫后在50、60、70、80、90℃干燥过程中颜色和叶绿素含量的变化规律。结果表明:甘蓝叶绿素含量是影响其颜色的主要因素,其叶绿素降解符合一级反应动力学模型,活化能为15391.11J/mol,该模型预测值与实测值的平均相对误差仅为5.58%,证明该模型合理可信。

关键词: 干燥, 动力学, 叶绿素, 颜色变化, 脱水甘蓝, 活化能

Abstract: A kinetic model was proposed for evaluating the degradation of chlorophyll in cabbage during drying process. After blanching, cabbage was dried at 50, 60, 70, 80 ℃ and 90 ℃, respectively. The content of chlorophyll was the major factor affecting the color of cabbage during drying process. The chlorophyll degradation was fitted to a first-order reaction model with an activation energy of 15391.11 J/mol. The kinetic model of chlorophyll degradation in cabbage was validated with a relative error of 5.58% in comparison with the actual values, indicating high reliability and reasonability, which was reliability and reasonable.

Key words: dry, kinetics, chlorophyll, color change, dehydrated cabbage, activation energy

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