| 从L-阿拉伯胶提取L-阿拉伯糖 |
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| 引用本文： | 冯亚青,刘燕,张晓东,张安训,张卫红.从L-阿拉伯胶提取L-阿拉伯糖[J].精细化工,2003,20(5):288-290. |
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| 作者姓名： | 冯亚青 刘燕 张晓东 张安训 张卫红 |
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| 作者单位： | 天津大学,化工学院,精细化工系C1化学与化工国家重点实验室,天津,300072 |
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| 摘 要： | 阿拉伯胶在硫酸作用下水解得到含L 阿拉伯糖的混合液,经w(C2H5OH)=90%的乙醇萃取,再经工业乙酸沉淀,可得粗L 阿拉伯糖。正交实验确定了酸性水解反应的影响因素和最佳条件为:水解温度90～100℃,w(H2SO4)=1 0%,L 阿拉伯糖的粗收率为85%,质量分数为66 7%。经双柱色谱分离提纯L 阿拉伯糖,所用洗脱剂分别为:V(正丁醇)∶V(乙酸乙酯)∶V(异丙醇)∶V(乙酸)∶V(水)=3 5∶10∶6 5∶3∶3和V(乙酸乙酯)∶V(异丙醇)∶V(水)=5∶2 2∶1 1,得到收率大于50%,质量分数为99%的L 阿拉伯糖。
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| 关 键 词： | L阿拉伯糖 阿拉伯胶 提取 双柱色谱分离 |
| 文章编号： | 1003-5214(2003)05-0288-03 |
Extraction and Purification of L-Arabinose from Arabic Gum |
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| FENG Ya-qing,LIU Yan,ZHANG Xiao-dong,ZHANG An-xun,ZHANG Wei-hong e Chemicals,School of Chemical Engineering,Tianjin University,Tianjin ,China.Extraction and Purification of L-Arabinose from Arabic Gum[J].Fine Chemicals,2003,20(5):288-290. |
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| Authors: | FENG Ya-qing LIU Yan ZHANG Xiao-dong ZHANG An-xun ZHANG Wei-hong e Chemicals School of Chemical Engineering Tianjin University Tianjin China |
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| Affiliation: | FENG Ya-qing,LIU Yan,ZHANG Xiao-dong,ZHANG An-xun,ZHANG Wei-hong e Chemicals,School of Chemical Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Arabic gum was hydrolyzed with sulfuric acid solution to give the mixed solution containing L-arabinose,which was concentrated and extracted with 90% alcohol and precipitated by industrial acetic acid to give the crude L-arabinose.The influencing factors were studied by orthogonal test to get the optimum conditions for acidic hydrolysis,i.e.,hydrolyzing temperature 90-100 ℃ and w(H2SO4)=1.0%.Yield of crude L-arabinose was 85% and the purity was 66.7%.After chromatographic separation with double column,purified L-arabinose was obtained.Two eluting reagent systems were chosen,i.e.,V(n-butanol)∶V(ethyl acetate)∶V(iso-butanol)∶V(acetic acid)∶V(water)=3.5∶10∶6.5∶3∶3 and V(ethyl acetate)∶V(iso-butanol)∶V(water)= 5∶2.2∶1.1.The yield was more than 50% and the purity was 99%. |
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| Keywords: | L-arabinose arabic gum extraction double column chromatographic separation purification |
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