| 天然紫背天葵红色素的初步研究 |
| |
| 引用本文： | 李红缨,杨海贵,植中强,杨辉荣.天然紫背天葵红色素的初步研究[J].精细化工,2001,18(3):148-150. |
| |
| 作者姓名： | 李红缨 杨海贵 植中强 杨辉荣 |
| |
| 作者单位： | 1. 西江大学 轻工化学系,
2. 广东工业大学 化工系, |
| |
| 摘 要： | 从紫背天葵中提取天然红色素的工艺条件是 :以体积分数是 30 %的乙醇 -水溶液作提取剂 ,温度为 5 0℃ ,时间为 3h ,原料与提取剂配比为 1g∶7mL。对该色素稳定性研究的结果表明 ,紫背天葵红色素在pH≤ 4的条件下对热的稳定性好 ,在此条件下加入果糖、葡萄糖、蔗糖、淀粉或Na+ 、K+ 、Mg2 + 、Zn2 + 、Ca2 + 等金属离子时色素颜色不变 ,但Fe3 + 的存在会使该色素颜色改变。pH≥ 5时 ,色素颜色发生变化。
|
| 关 键 词： | 紫背天葵 天然红色素 提取 稳定性 |
| 文章编号： | 1003-5214(2001)03-0148-03 |
A Primary Research on the Natural Red Pigment from Begonia Fimbristipula Hance |
| |
| LI Hong-ying,YANG Hai-gui,ZHI Zhong-qiang,YANG Hui-rong.A Primary Research on the Natural Red Pigment from Begonia Fimbristipula Hance[J].Fine Chemicals,2001,18(3):148-150. |
| |
| Authors: | LI Hong-ying YANG Hai-gui ZHI Zhong-qiang YANG Hui-rong |
| |
| Affiliation: | LI Hong ying 1,YANG Hai gui 1,ZHI Zhong qiang 1,YANG Hui rong 2 |
| |
| Abstract: | The optimum conditions for extracting the natural red pigment from Begonia fimbristipula Hance were:30%(volume percent) ethanol as extractant,temperature 50 ℃,time 3 h and ratio of material to extractant 1 g∶7 mL.The results showed that the pigment had good thermostability and was stable to fructose,glucose,sucrose,starch and metal ions such as Na+,K+,Mg2+,Zn2+ and Ca2+ under pH≤4 but was unstable to Fe3+.The colour of the pigment changed when pH≥5. |
| |
| Keywords: | Begonia fimbristipula Hance natural red pigment extract stability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
