杜鹃红山茶花色色素提取及其性质  

Extraction and Characterization of the Flower Pigment of Camellia azalea

作　　者：李辛雷[1] 李纪元[1] 范正琪[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,富阳311400

出　　处：《林业科学》2011年第1期79-84,共6页Scientia Silvae Sinicae

基　　金：浙江省科技计划项目(2007C32035);林业公益性行业科研专项(200704028);国家林业局"948"项目(2007-4-04)

摘　　要：以杜鹃红山茶花瓣为材料,对其花色色素提取条件及理化性质进行研究。结果表明,杜鹃红山茶花色色素提取的最佳条件为:20%的乙醇、料液比1∶5、浸提温度30℃、浸提时间1h;杜鹃红山茶花色色素具光、热不稳定性,在低pH时稳定,微酸近中性时变色;色素抗氧化、还原能力差,对螯合剂、苯甲酸钠敏感;葡萄糖、蔗糖对色素无明显影响,食盐、柠檬酸、维生素C具增色作用;金属离子Co2+,Cu2+,Mg2+,Ca2+,Zn2+,Mn2+,K+,A13+,Sn2+等具增色作用,Fe2+,Fe3+,Pb2+影响色素稳定性。Physical-chemical properties and extraction protocol of the flower pigments of Camellia azalea Wei were studied in this article.The results showed that the best extraction conditions of the flower pigments were 20% ethanol solution at 30 ℃ for 1 h with the solid-liquid ratio 1∶ 5.Light and reduced stability of the flower pigments.The pigments were stable with in lower pH,but the color changed at weak acid level which closing to neutrality.The pigments had less resistance capability against oxidizing or reducing agents and they were sensitive to chelating agents and or sodium beneoate.Glucose and sucrose almost had no effects on the pigments,but table salt,citric acid or vitamin C had hyperchromic effect.Metal ions of Co^2＋ ,Cu^2＋ ,Mg^2＋ ,Ca^2＋ ,Zn^2＋ ,Mn^2＋ ,K^＋ ,Al^3＋ ,Sn^2＋ also had hyperchromic effect,but Fe^2＋ ,Fe^3＋ ,Pb^2＋ reduced the stability of the pigment.

关 键 词：杜鹃红山茶 花色色素 提取 理化性质 

分 类 号：S718.43[农业科学—林学]