石榴汁色素纯化工艺及稳定性研究  

STUDY ON PURIFICATION AND STABILITY OF POMEGRANATE JUICE PIGMENT

作　　者：杨兆艳[1] 

机构地区：[1]运城学院生命科学系,山西运城044000

出　　处：《河南工业大学学报（自然科学版）》2011年第2期80-84,共5页Journal of Henan University of Technology：Natural Science Edition

基　　金：运城学院2009年度院级基础研究项目(JC-2009007)

摘　　要：以石榴汁为原料,通过大孔吸附树脂的静态试验和动态试验确定纯化色素的工艺.试验结果表明:最佳试验吸附树脂为AB-8;吸附条件在室温25℃、pH3.0、体积浓度70%、吸附流速为1 BV/h时,吸附效果较佳;用75%乙醇、室温25℃、pH1.0、解吸流速为1 BV/h时,洗脱作用较好.石榴汁色素在三氯甲烷、石油醚中不溶,而能溶于乙醇和水,微溶于丙酮;对热较稳定,65℃加热1 h,色素的残余率为95.87%;日光灯处、黑暗处较稳定;在pH≤2时颜色较好.产品得率为2.04%,色价为28.9.树脂纯化后的石榴汁色素杂质含量少、纯度高.Taking pomegranate juice as raw material,we studied the purification process of pomegranate juice pigment through the static test and dynamic test using macroporous adsorbing resin.The results showed that the best adsorbing resin was AB-8;the optimal adsorption conditions were as follows： temperature 25 ℃,pH 1.0,volume concentration 70%,adsorption flow rate 1 BV/h;and the optimal desorption conditions were as follows： 75% ethanol,temperature 25 ℃,pH 1.0,and desorption flow rate 1 BV/h.The pomegranate juice pigment was insoluble in chloroform and petroleum ether,but soluble in ethanol and water,and slightly soluble in acetone.The pomegranate juice pigment was thermally stable,and the residual rate of the pigment was 95.87% after the pigment was heated at 65 ℃ for 1 hour.The pigment was stable in the fluorescent light and at the dark,and had good color when pH is equal to or less than 2.Under the purification conditions,the yield of the product was 2.04%,and the color value was 28.9.The purified pigment had less impurities and high purity.

关 键 词：石榴汁 色素 纯化 稳定性 

分 类 号：TS201.2[轻工技术与工程—食品科学]