不同方法干燥的核桃外果皮中棕褐色色素稳定性测试  

Testing of the stability of the Dark Brown Pigment of the walnut hust by hydroextr act from different means dry walnut epicarp

作　　者：吕俊芳[1] 刘启瑞[1] 陈小利[1] 张美丽[1] 王鑫艳[1] 梁昕[1] 

机构地区：[1]延安大学化学与化工学院,陕西延安716000

出　　处：《延安大学学报（自然科学版）》2003年第1期52-55,共4页Journal of Yan'an University：Natural Science Edition

基　　金：陕西省教育厅科学研究计划项目(2001JK072)。

摘　　要：以水为萃取剂,提取不同方法干燥的核桃外果皮中棕褐色色素,并对其稳定性进行了测试。结果表明:该色素水溶性好,耐氧化——还原性能较强,耐热性、耐光性很好。盐、蔗糖、金属离子对色素的色泽无不良影响,乙醇有增色效应。水提取棕褐色色素,工艺简单、无污染。Use water to distill the Dark Brown Pigment in the differently dried walnut epicarp. We have tested the stability of the dark brown pigment. The results show that the pigment can be better solved by H2O. At the same time,it has good resistance to oxidation and is stable in hot and light.Salt、C12H22O11 and metal ions have little effect on it.Using water to distill the Dark Brown Pigment has many advantages,such as simple technologg and low pollution.

关 键 词：水萃取 核桃外果皮 棕褐色色素 稳定性 

分 类 号：S654.1[农业科学—果树学] O529.9[农业科学—园艺学]