苍术中功能性寡糖的分离纯化与定量分析毕业论文
2022-04-07 20:45:37
论文总字数:18264字
摘 要
关键词:寡糖;HPLC;TLC;苍术; 除色素
The purification and quantification of functional oligosaccharide in Rhizome Atractylodis
Abstract: Modern pharmacological studies have demonstrated that oligosaccharides and polysaccharides process multiple pharmacological activities such as immunoregulation of gastrointestinal system, improvement of metabolic disorder and liver protection, etc. Rhizome Atractylodis origins from Maoshan, Jiangsu province have high quality and used as geoherbs. In recent years, due to the mountain reclamation and excessive excavation, the resources of geoherbs are increasing exhausted; it has been listed as endangered plants inJiangsu province. In order to relieve the current situation of endangered wild Rhizome Atractylodis, Rhizome Atractylodis has been introduced and cultivated by surrounding areas. Studies have verified there are significant differences in volatile components between Rhizome Atractylodis cultivar from different regions. However, sugars components especially oligosaccharide has not been studied. In this study ethanol heating reflux and ethanol ultrasound methods were used for extracting oligosaccharides from Rhizome Atractylodis and macroporous resin was applied to remove pigment from the extracts. The extracts were concentrated by rotary evaporator. The samples from different origins finally analyzed by thin layer chromatography (TLC) and high performance liquid phase chromatography (HPLC) coupled with evaporative light scattering detector (ELSD). The results showed that ethanol heating reflux was better than that of ethanol ultrasound for extraction of oligosaccharide from Rhizome Atractylodis. Macroporous resin is a good choice for pigment removment. Oligosaccharide is an important ingredient in Rhizome Atractylodis and sample from Anhui province contained most abundant oligosaccharides.
Keywords: oligosaccharide; HPLC; TLC; Rhizome Atractylodis;pigment removment
目录
第一章 文献综述 1
1.1 寡糖简介及性质 1
1.1.1 寡糖简介 1
1.1.2 寡糖性质 2
1.2 常用功能性寡糖分离纯化的方法 3
1.2.1 柱分离法 3
1.2.2 膜分离法 4
1.2.3 色谱法 4
1.2.4 电泳法 5
1.3 对寡糖进行表征的方法 5
1.3.1 气相色谱法(GC) 5
1.3.2 高效液相色谱法(HPLC) 5
1.3.3 液相色谱-质谱联用法(LC-MS) 6
1.3.4 其他色谱方法 6
1.3.5 核磁共振法(NMR) 7
1.4 中药材的选择 7
1.5 寡糖国内外研究现状 7
1.6本课题的研究的意义和主要内容 8
第二章 实验材料与方法 9
2.1 实验材料 9
2.1.1 实验仪器 9
2.1.2 实验试剂 10
2.2 实验方法 10
2.2.1 实验样品制备 10
2.2.2 提取溶剂的配制 11
2.2.3 乙醇回流提取样品 11
2.2.4 乙醇超声提取样品 11
2.2.5 薄层色谱法检验 11
2.2.6 高效液相色谱检测 12
2.2.7 大量提取方法 13
2.2.8 过大孔树脂柱脱色 14
2.2.9 蒸发浓缩 14
第三章 结果与讨论 15
3.1 提取方法的选择 15
3.1.1薄层色谱法检测结果 15
3.2 四种样品的选择 16
3.2.1 薄层色谱法检测结果 16
3.2.2 高效液相色谱法检测结果 16
第四章 结论与展望 28
4.1 结论 28
4.2 展望 28
参考文献 29
致谢 31
第一章 文献综述
1.1 寡糖简介及性质
1.1.1 寡糖简介
寡糖( oligosaccharide )又称低聚糖,为两个或两个以上(一般为2-10个)单糖单位以糖甘键相连形成的糖分子。寡糖与多糖之间没有严格的界限,含有两个单糖单位的寡糖叫双糖,含有三个单糖单位的寡糖叫三糖。寡糖不仅是储存能量的载体,更是生物体内一种重要的信息物质,在生命过程中具有重要的功能。它以复合物的形式存在于多种生物组织中,在细胞之间的识别及其相互作用中起着重要作用。[1-2]
功能性低聚糖类型 | 组成 |
大豆低聚糖[3] | 果糖和葡萄糖16%、蔗糖39%、水苏糖24%、棉子糖8%、其他 糖13% |
低聚异麦芽糖[4] | 葡萄糖40.5%、麦芽糖6.7%、麦芽四糖0.8%、异麦芽糖16.9%、潘糖12.5%、异麦芽三糖3.4%、其他分枝糖19.2% |
低聚蔗果糖[5] | 葡萄糖33%、蔗糖12%、蔗果三糖25%、蔗果四糖25%、蔗果 请支付后下载全文,论文总字数:18264字
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