| [Bmim]BF4-Na2SO4双水相体系萃取葡萄皮渣中齐墩果酸 |
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| 引用本文： | 张挺峰,张喜峰,张芬琴.[Bmim]BF4-Na2SO4双水相体系萃取葡萄皮渣中齐墩果酸[J].中国酿造,2015,34(7):93. |
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| 作者姓名： | 张挺峰 张喜峰 张芬琴 |
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| 作者单位： | 河西学院 农业与生物技术学院，甘肃张掖734000 |
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| 基金项目： | 甘肃省中小企业创新基金项目（1047GCCG001）；河西学院校长基金项目（XZ2014-29） |
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| 摘 要： | 利用1-丁基-3-甲基咪唑四氟硼酸盐(Bmim]BF4)和硫酸钠(Na2SO4)离子液体双水相萃取分离葡萄皮中齐墩果酸，分别对Bmim]BF4、Na2SO4、齐墩果酸质量分数、萃取温度、pH值、低级醇进行了研究，确定双水相体系组成为18%Bmim]BF4-16%Na2SO4，在25 ℃条件下，加入质量分数10%齐墩果酸、体积分数2%无水乙醇，调节pH 4.0，齐墩果酸萃取率可达97.9%，分配系数为16.58。利用这项技术有望为从天然植物中提取有效药用成分开辟一条崭新的思路。
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| 关 键 词： | 离子液体 双水相萃取 齐墩果酸 |
Extraction of oleanolic acid in grape skin residues based on [Bmim]BF4/Na2SO4 aqueous two-phase system |
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| ZHANG Tingfeng,ZHANG Xifeng,ZHANG Fenqin.Extraction of oleanolic acid in grape skin residues based on [Bmim]BF4/Na2SO4 aqueous two-phase system[J].China Brewing,2015,34(7):93. |
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| Authors: | ZHANG Tingfeng ZHANG Xifeng ZHANG Fenqin |
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| Affiliation: | College of Agriculture and Biotechnology, Hexi University, Zhangye 734000, China |
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| Abstract: | The potential use of Bmim]BF4 and Na2SO4 ionic liquid-aqueous two phase system (IL-ATPS) for the extraction of oleanolic acid from grape skin residues was evaluated and optimized. The effects of independent variables (Bmim]BF4 concentration, Na2SO4 concentration, oleanolic acid concentration, extraction temperature, pH, and short-chain alcohol) were evaluated by single factor analysis. Under the optimal aqueous two-phase system composition of Bmim]BF4 18%-Na2SO4 16%, at 25 ℃, oleanolic acid 10%, pH 4.0 and absolute ethanol 2%, the extraction efficiency of oleanolic acid was 97.9%, and the partition coefficient was 16.58. The results indicated that the technology was expected to open up new ideas for extracting effective medical ingredients from natural plants. |
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| Keywords: | ionic liquid aqueous two-phase system extraction oleanolic acid |
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