学术
摘 要:
本文研究了木槿花红色素的提取条件和理化性质，结果表明，用料液比1：30（g／mL）、pH1（10％盐酸调）的95％乙醇作提取剂，在80℃恒温浸提60min，提取效率较好。木槿花红色素属花青素类色素，pH值对色素影响明显，在酸性条件下色泽稳定且具有热稳定性。光照能加快色素降解。金属离子Na^＋、Ca^2＋、Al^3＋、Cu^2＋、Zn^2＋对色素色泽无影响，而Fe^3＋、Pb^2＋有不良影响。色素抗氧化能力较差而耐还原性能稍好。蔗糖、葡葡糖和盐等添加剂对色素无影响。[著者文摘]
文章出处:
《中国食品添加剂》-2006年4期,52 -86-90,52页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1006-2513（2006）04-0086-05
Study on extraction and characterization of red pigment from Hibiscus syriacus L.
JIANG Yi-hua JIANG Xin-long （Department of Medical, Lishui College1 ; Department of Applied Biological, Lishui College2, Lishui 323000）
Abstract:
Physico - chemical properties and extractions of the red pigment in flowers of Hibiscus syriacus L, were investigated. Results showed that good yield of pigment could be obtained by 95% C2HsOH solution （with 10% HCI） of pH 1 at 80℃ for 60min with the solid - liquid ratio 1 ： 30 g/mL. The Hibiscus syriacus L. red pigment is classified to anthocyanins, for which pH had significant effect on the tone of pigment. The pigment is suitable to acid environment while its good heat resistance. Under sunlight, degradation of the pigment could be accelerated. Metallic ions Na^2＋, Ca^2＋ , Zn^2＋ , Al^3＋, Cu^2＋ had no effect on the tone of pigment, but Fe^3＋, Pb^2＋ had severe disadvantageous effect. T This kind of pigment has better endurance capability against reducing agent, but it has less resistance capability against oxidizing agent. Addition of glucose, sucrose had no effect on the pigment.[著者文摘]
Key words:
Hibiscus syriacus L. ; pigment; extraction; physico -chemical property
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