天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (3): 414-418.

• 开发研究 • 上一篇    下一篇

紫薇花红色素的提取及稳定性的研究

晏丽*   

  1. 吉首大学城乡资源与规划学院 林产化工工程湖南省重点实验室,张家界 427000
  • 出版日期:2014-03-29 发布日期:2014-12-08

Extraction and Stability of Red Pigment from Lagerstroemia indica Flowers

YAN Li*   

  1. Key Laboratory of Hunan Forest Products and Chemical Industry Engineering,College of Resource and Planning Sciences,Jishou University,Zhangjiajie 427000,China
  • Online:2014-03-29 Published:2014-12-08

摘要: 用正交试验对紫薇花红色素的最佳提取条件进行研究,并探讨该色素的稳定性。结果表明,乙醇浓度40%,料液比1:40(g/mL),提取时间90 min。该色素属水溶性色素,耐室内自然光,热稳定性好;在酸性条件下稳定;金属离子Na+、K+、Mg2+对紫薇花色素基本无影响,而Ca2+、Zn2+、Al3+、Cu2+、Pb2+、Fe2+离子对色素有明显影响。

关键词: 紫薇花, 红色素, 提取, 稳定性

Abstract: Orthogonal array design was used to optimize the extraction condition of natural red pigment from Lagerstroemia indica flowers.The stability of the extracted red pigment was also investigated.The results showed that the optimal extraction conditions were as follows:using 40% aqueous ethanol and the ratio of material to liquid of 1:40 (g/mL) to extract raw material under the assistance of ultrasonic treatment for 90 min.The red pigment was soluble in water,and had good resistance to indoor natural light,heat,and had good stability in acidic environment.Except Ca2+, Zn2+, Al3+, Cu2+, Pb2+ and Fe2+, other metal ions including Na+、K+、Mg2+ had no obvious effects on the pigment.

Key words: Lagerstroemia indica flowers, red pigment, extraction, stability

中图分类号: 

TS202.3