黄芪中黄酮的提取毕业论文

黄芪提取物化学成分众多,主要含有皂苷、黄酮、多糖以及氨基酸等几类成分。1 皂苷类在黄芪及其同属近缘共分离出四十余种三萜皂苷,其结构为四环三萜及五环三萜苷类,苷的糖多为葡萄糖、半乳糖、鼠李糖,多接于苷元3,6位。有些苷的某些羟基乙酰化,膜荚黄芪中分离出黄芪苷Ⅰ、黄芪苷Ⅱ。在膜荚黄芪中有乙酰黄芪苷Ⅰ(Acetytastragaloside)、黄芪苷(Astragalo side)Ⅰ～Ⅷ、异黄芪苷(Isoastragaloside)Ⅰ～Ⅱ、黄芪皂苷乙(Atramembrannin)、环黄芪醇(Cycloastragenol)(Cyclosiversigenin)和大豆皂苷(ISoyasaponin);膜荚黄芪皂苷呆板厂蒙古黄芪中有黄芪苷1、I、W和大豆皂苷1。2 多糖类从内蒙黄芪中分得4种多糖,其中两种为葡聚糖AG-1和AG-2、另两种为杂多糖AH—1和AH-2,其中AG-1和AH-1具有免疫促进作用。3 黄酮类黄芪所含黄酮主要为黄酮类。异黄酮类,二氢黄酮类,主要有山奈素、槲皮素、异鼠李素、鼠李柠檬素、熊竹素、芝柄花素、毛蕊异黄酮(calycosm),芒柄花黄素(for mononetm)2’,4’-二羟基-5,6-二甲氧基-黄烷(2’,4’-dihydroxv—5,6-dimethoxvisoflavane)L-3-羟基-9-甲氧基紫檀烷-(L-3-hydroxv-9-methoxypterocarpan)及其苷类,其苷类的糖多为葡萄糖,鼠李糖,从膜荚黄芪的茎叶中分出鼠李柠檬素3一葡萄糖苷及槲皮素3一葡萄糖苷。4 氨基酸类黄芪根中测出21种游离氨基酸,其中有天冬酰胺(asparamide)、刀豆氨酸(ca naraine)、脯氨酸(prolin)、精氨酸、天冬氨酸、1氨基丁酸(r-amiinnobutyricacid)等。5 生物碱类从膜荚黄芪中分离出胆碱(eholme)和甜菜碱(betaine)。6 有机酸类黄芪的有机酸主要有香草酸、阿魏酸、异阿魏酸、对羟苯基丙烯酸、咖啡酸、绿原酸及棕榈酸。7 微量元素黄芪中微量元素以铁、锰、锌和铷含量较大,另有报道其富含硒。8其他黄芪中还含有胡萝卜苷(daucostero1)、叶酸(folicacid)、β—谷甾醇(β-sitostero1)。

活性明显降低，羟脯氨酸含量显著减少。根据黄芪提取液对光老化无毛小鼠皮肤组织HYPMDA含量及SOD活力的实验可知，黄芪提取液黄酮对sod活性测定的影响有活性明显降低，羟脯氨酸含量显著减少。黄芪提取物(黄芪多糖,黄芪甲甙)纯度：98%分子式：C41H68O14用途：具有增强免疫力，增强能量，圄疲劳，圄突变，保肝，圄制破骨细胞的作用。

目的：提取分离黄芪桂枝五物汤的总黄酮，然后进行药效学实验,为研制出高效低毒、成分基本清楚、作用明确的新型中药复方制剂奠定基础。方法：采用醇提法飞黄芪桂枝五物汤中的总黄酮进行提取，再将提取的总黄酮用血细胞计数法以小鼠的脾细胞细胞培养活细胞数为指标考察其对小鼠的脾细胞的影响，特点在于首次对黄芪桂枝五物汤单个有效成分群之一总黄酮进行了提取，并进行药效学实验，检验其对脾细胞作用，是否能增强小鼠免疫力的功能。并通过不同的给药剂量，探究量效关系。结果：在实验条件下，实验组脾细胞的增殖活性明显高于对照组，各不同浓度梯度中，给药100μg的效果最显著。结论：黄芪桂枝五物汤在本实验条件下可提高小鼠的脾细胞增殖活性，且在一定范围内促进作用有最大值。Objective: total flavonoids extraction and separation of huangqi guizhi wuwu tang, and then the pharmacodynamics experiments, for developed the risk-benefit ratio, composition of basic clear, clear of new Chinese medicine compound preparations. Methods: alcohol formulation fly to extract total flavonoids in huangqi guizhi wuwu tang, and then extracted flavonoids blood cell counting method in mice spleen cells in cell culture in the index of living cells count its influence on mice spleen cells, characterized by huangqi guizhi wuwu tang for the first time in a single one of the effective components group of flavonoids were extracted, and the pharmacodynamics experiments and test its effect on spleen cells, whether can enhance immunity function in mice. And through different drug dosage, explore the concentration-response relationship. Results: under the condition of experiment, the experimental group and proliferation activity of spleen cells was obviously higher than that of control group, the different concentration gradient of dosing mu 100 g of the most significant effect. Conclusion: huangqi guizhi wuwu tang under this experimental condition can increase the spleen cell proliferation activity of mice, and the promoting effect in certain scope has a maximum value.