| 以乙醇、乙醇/水为溶剂提取白桦树皮中桦木醇的工艺研究 |
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| 引用本文： | 胡祥正,周宏建,宋光珍.以乙醇、乙醇/水为溶剂提取白桦树皮中桦木醇的工艺研究[J].天津科技大学学报,2011,26(6):48-50,55. |
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| 作者姓名： | 胡祥正 周宏建 宋光珍 |
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| 作者单位： | 1. 天津科技大学理学院,天津,300457
2. 天津科技大学食品工程与生物技术学院,天津,300457 |
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| 基金项目： | 天津市科技计划项目，天津市高校科技发展基金 |
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| 摘 要： | 分别以乙醇、乙醇/水、水为提取剂,研究从白桦树皮中提取桦木醇的工艺,确定了用乙醇作提取剂的最佳提取工艺条件:固液比(g∶mL)为0.083,抽提时间6,h;分别用异丙醇和乙醇作溶剂,通过两步重结晶操作,纯化桦木醇,得到桦木醇产品的产率达19.8%,熔点257.7～258.9,℃,纯度98%.
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| 关 键 词： | 白桦树皮 桦木醇 提取 纯化 重结晶 |
Study on Extraction of Betulin from White Birch Bark With Ethanol and Ethanol/Water as Solvent |
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| HU Xiang-zheng,ZHOU Hong-jian,SONG Guang-zhen.Study on Extraction of Betulin from White Birch Bark With Ethanol and Ethanol/Water as Solvent[J].Journal of Tianjin University of Science & Technology,2011,26(6):48-50,55. |
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| Authors: | HU Xiang-zheng ZHOU Hong-jian SONG Guang-zhen |
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| Institution: | HU Xiang-zheng1,ZHOU Hong-jian2,SONG Guang-zhen2(1.College of Science,Tianjin University of Science & Technology,Tianjin 300457,China,2.College of Food Engineering and Biotechnology,China) |
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| Abstract: | The technological conditions for extraction of betulin from the outer bark of white birch were investigated.Etha-nol,ethanol/water and water were used as extraction solvents.The suitable extraction conditions were determined for extrac-tion of betulin with ethanol as extraction solvent as followsr:atio of solid to liquid was 0.083,extraction time 6 h.Crude betulin was puritied and high purity produce was obtained by two step recrystallization.The yield of betulin reached 19.8%,melting point was 257.7-258.9,... |
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| Keywords: | white brich bark betulin extraction purity recrystallization |
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