| 银杏叶中总黄酮的提取 |
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| 引用本文： | 刘德汞,缑星,刘晶晶,曹书勤.银杏叶中总黄酮的提取[J].信阳师范学院学报(自然科学版),2012,25(3):352-354,420. |
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| 作者姓名： | 刘德汞 缑星 刘晶晶 曹书勤 |
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| 作者单位： | 信阳师范学院化学化工学院,河南信阳,464000 |
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| 基金项目： | 河南省科技攻关项目(112102310579) |
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| 摘 要： | 分别以不同比例的四氢呋喃-乙醇、乙醇-水为溶剂,采用水浴回流和浸泡法提取银杏叶中总黄酮,用分光光度法测定提取率.结果表明:采用水浴回流法时,以体积比为3∶1的四氢呋喃/乙醇为溶剂,银杏叶质量(g)与溶剂体积(mL)比为1∶13.3、水浴温度为50℃、时间为2 h,提取率可达14.7%;采用浸泡法时,以体积比为3∶1的乙醇/水为溶剂,银杏叶质量(g)与溶剂体积(mL)比为1∶10、浸泡时间为24 h,提取率最高达9.3%.
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| 关 键 词： | 银杏叶 黄酮 提取 水浴回流法 浸泡法 |
Extraction of Total Flavones From Ginkgo Leaves |
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| LIU De-Gong
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GOU Xing
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LIU Jing-Jing
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CAO Shu-qin.Extraction of Total Flavones From Ginkgo Leaves[J].Journal of Xinyang Teachers College(Natural Science Edition),2012,25(3):352-354,420. |
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| Authors: | LIU De-Gong GOU Xing LIU Jing-Jing CAO Shu-qin |
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| Institution: | (College of Chemistry and Chemical Engineering,Xinyang Normal University,Xinyang 464000,China) |
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| Abstract: | Total flavone was extracted by using two methods including water bath backflow and soaking with different solvent such as tetrahydrofuran-ethanol and ethanol as solvent,respectively.The extraction percentage was measured by spectrophotometry.The results showed that the extraction percentage of total flavones for water bath backflow reached 14.7% when the volume ratio of tetrahydrofuran to ethanol was 3∶ 1,the ratio of ginkgo leaves mass(g) to solvent volume(mL) was 1∶ 13,water bath temperature was 50 ℃ and extraction time were 2 hours,and the extraction percentage of 9.3% for soaking method could be achieved when a volume ratio of ethanol to water was 3∶ 1,the ratio of ginkgo leaves mass(g) to solvent volume(mL) was 1∶ 10,and the soaking time was 24 hours. |
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| Keywords: | ginkgo leaves flavone extraction water bath backflow soak |
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