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目录 摘要..................................................................................................................................................... 2 paper51.com 关键词................................................................................................................................................. 2 http://www.paper51.com
前言..................................................................................................................................................... 2 内容来自论文无忧网 www.paper51.com 1实验试剂、仪器与材.................................................................................................................... 3 http://www.paper51.com
1.1实验试剂及药品................................................................................................................... 3 http://www.paper51.com 1.2实验主要设备....................................................................................................................... 3 内容来自www.paper51.com 1.3实验材料：........................................................................................................................... 3 内容来自www.paper51.com 2 实验过程......................................................................................................................................... 3 内容来自论文无忧网 www.paper51.com
2．1熊果酸提取的工艺流程................................................................................................... 3 copyright paper51.com
2.1.1简要流程..................................................................................................................... 3 内容来自www.paper51.com 2.1.2具体技术要点............................................................................................................. 3 内容来自论文无忧网 www.paper51.com 2．2提取的熊果酸的分析方法.............................................................................................. 4 copyright paper51.com
2．2．1定性分析方法...................................................................................................... 4 copyright paper51.com 2．2．2定量分析方法...................................................................................................... 4 内容来自论文无忧网 www.paper51.com
2．3熊果酸提取因素的研究................................................................................................... 4 copyright paper51.com 2．3．1枇杷叶粉碎度对熊果酸提取的影响................................................................ 4 http://www.paper51.com 2．3．2超声时间对熊果酸提取的影响........................................................................ 5 内容来自www.paper51.com
2．3．3乙醇浓度对熊果酸提取的影响........................................................................ 5 copyright paper51.com 2．3．4固液比对熊果酸的影响..................................................................................... 5 copyright paper51.com 2．4熊果酸的多因素实验——正交实验............................................................................. 6 http://www.paper51.com
3．实验结果与分析.......................................................................................................................... 6 内容来自论文无忧网 www.paper51.com 3．1熊果酸的定性分析........................................................................................................... 6 http://www.paper51.com 3．2熊果酸的单因子实验结果.............................................................................................. 6 copyright paper51.com 3．2．1紫外分光光度法检测熊果酸标准样的标准曲线........................................... 6 内容来自论文无忧网 www.paper51.com
3．2．2不同的单因素对熊果酸提取率的影响结果................................................... 7 内容来自论文无忧网 www.paper51.com
3.2.2.1枇杷叶粉碎度对熊果酸提取的影响的结果与分析…………………………….8 copyright paper51.com 3.2.2.2超声时间对熊果酸提取的影响的结果与分析………………….……………….8 paper51.com 3.2.2.3乙醇浓度对熊果酸提取的影响的结果与分析…………………………….…….9 paper51.com 3.2.2.4固液比对熊果酸提取影响的结果与分析……………………………..…….……9 内容来自www.paper51.com
4 结论.......................................................................................................................................... …..10 copyright paper51.com 参考文献........................................................................................................................................... 12 paper51.com 致 谢.................................................................................................................................................. 13 http://www.paper51.com 英文摘要........................................................................................................................................... 13 内容来自论文无忧网 www.paper51.com
paper51.com 内容来自www.paper51.com 摘要：本文以枇杷叶为原料，采用超声波辅助手段，结合乙醇热回流提取方法，主要对提取阶段的工艺进行系统研究，实验过程中以紫外分光光度法评价工艺，建立与整体工艺相配套的分析方法，实验得出了最佳的提取参数，此参数是乙醇浓度为95%，固液比为1:10，超声波时间为20min。 内容来自www.paper51.com
关键词：枇杷叶；熊果酸； 提取工艺 copyright paper51.com |