食品科学 ›› 2008, Vol. 29 ›› Issue (12): 339-341.

• 工艺技术 • 上一篇    下一篇

核桃壳棕色素的提取及性质研究

 李维莉, 马银海, 刘增康, 马庆梅   

  1. 昆明学院化学系;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Extraction and Characteristics of Brown Pigment from Walnut Shell

 LI  Wei-Li, MA  Yin-Hai, LIU  Zeng-Kang, MA  Qing-Mei   

  1. Department of Chemistry,Kunming University,Kunming 650031,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 以核桃壳为原料,研究树脂法纯化核桃壳棕色素的方法。结果表明AB-8树脂对核桃壳棕色素有较高的吸附量,用50%乙醇为洗脱剂得到产品质量好,色价高的核桃壳棕色素;该色素水溶性好,在酸性条件下具有较好的稳定性,有一定的耐光性,在适当温度下对热稳定性较好,对低浓度的常用食品添加剂较稳定,是一种价廉宜得、安全可靠,使用方便的天然植物色素,在食品工业中有一定的开发利用潜能。

关键词: 核桃壳, 棕色素, 树脂, 性能

Abstract: The brown pigment from walnut shell was purified with several resins,and its characteristics were studied. The results showed that AB-8 resin has the best performance of absorbing the brown pigment. 50% ethanol is the optimal desorption agent. After being used repeatedly 20 times,the adsorption capcity is only at a loss of 2.63%. The pigment is stable in acid solution,and the light,heat and common food additions also have no evident influences on its stability. So the pigment from walnut shell can be used as a good food additive.

Key words: walnut shell, brown pigment, resin, characteristics