芍药苷论文：从白芍中提取及分离芍药苷和芍药内酯苷

芍药苷论文：从白芍中提取及分离芍药苷和芍药内酯苷
【中文摘要】白芍是我国传统中药,芍药苷和芍药内酯苷是白芍中的重要活性成分,具有各自独特的药理价值。

本文用溶剂提取法从白芍原料药中获得粗提物,通过正交设计法、均匀设计法和球面对称设计法优化提取有效成分的提取液料比例、提取溶剂、提取时间、提取温度;用大孔吸附树脂层析法从白芍粗提物中提取芍药苷和芍药内酯苷混合物,比较两种树脂AB-8、D101的提取效果,并考察洗脱液的比例和洗脱体积;用模拟移动床色谱(SMBC)精细分离芍药苷和芍药内酯苷,主要进行切换时间、流动相、洗脱流速的选择,并考察了模拟移动床分离运行的稳定性。

实验结果表明:白芍中有效成分的溶剂提取的最佳条件为:甲醇浓度为90%,提取液料比为10～12倍,提取时间为180min,提取温度为40℃;用D101树脂对白芍粗提物中芍药苷和芍药内酯苷进一步提取,梯度洗脱方案为:去离子水(2170mL)-20%甲醇水溶液(1250mL)-60%甲醇水溶液(980mL)-纯甲醇(700mL);模拟移动床分离芍药苷和芍药内酯苷的工作参数为:分离柱为4根色谱分离柱(ID×L=1.0×20.0cm),固定相为ODS(20μm),工作模式1-1-2,洗脱流动相甲醇:水=30:70(v/v),切换时间25min,进样浓度0.1g/mL,进样流速0.1 mL/min,洗脱流速2.0mL/min,冲洗流速4.0mL/min,室温下实验,得到的产品芍药苷的含量大于92%,芍药内酯苷的含量大于90%,该SMB分离过程能够稳定运行。

【英文摘要】Radix Paeoniae Rubra is one kind of Chinese
traditional medicine. Peaoniflorin and Albiflorin are important active components in Radix Paeoniae Rubra, each of which has unique pharmacological value. In this paper, the crude extract was firstly obtained from Radix Paeoniae Rubra by solvent extraction. The extract conditions including liquid-solid ratio, extraction solvent, extraction time and extraction temperature were optimized by orthogonal design, uniform design and spherical symmetric design, respectively. Then, the mixture of Paeoniflorin and albiflorin was separated by macroporous resin from the crude extract, the separation results were compared using two types of resin, AB-8 and D101. The eluent and elution volume were also selected. Paeoniflorin and albiflorin were further purified by simulated moving bed chromatography(SMBC). Switching time, the mobile phase, elution flow rate, and other parameters were selected, and the operation stability of SMB was investigated. Experimental results showed that the optimized extracting conditions were as follows: methanol concentration 90%, liquid-solid ratio 10～12, extraction time 180min, extraction temperature 40℃. The gradient elution was used in the separation of the two components by D101 resin, elution program was deionized water (2170mL) -20% methanol in water (1250mL) -60% methanol in water
(980mL) - Pure methanol (700mL). The mixture of Paeoniflorin and Albiflorin was finally separated by simulated moving bed, and the main process parameters were as follows: four chromatographic column (ID×L = 1.0×20.0cm), stationary phase was 20μm ODS packing; mobile phase was methanol: water
=3:7(V/V); eluent flow rate 2.0mL/min; purging flow rate 4.0 mL/min; injection flow rate 0.1mL/min; feed concentration 0.1g/mL; switching time 25 min; operating at room temperature. Under the above conditions, the mixture was separated by SMB, and more than 92% and 90% content of Paeoniflorin and Albiflorin were obtained, respectively. The SMB separation process was stable.
【关键词】芍药苷芍药内酯苷模拟移动床色谱大孔吸附树脂
【英文关键词】Paeoniflorin Albiflorin SMBC Macroporous resin
【目录】从白芍中提取及分离芍药苷和芍药内酯苷中文摘要
4-5ABSTRACT51. 绪论8-251.1 本课题的研究背景8-141.1.1 芍药
概述及其主要组分简介8-101.1.2 芍药苷的理化性质及药理作用
10-111.1.3 芍药内酯苷的理化性质及药理作用11-121.1.4 前人关
于芍药苷和芍药内酯苷提取分离的研究工作12-141.2 本课题采用的主要技术手段14-211.2.1 溶剂提取法的简介及应用14-151.2.2 大孔吸附树脂的简介及应用15-161.2.3 模拟移动床技术及应用
16-211.3 中药研究及中药现代化21-241.3.1 中药研究的意义
21-221.3.2 中药研究的方法22-231.3.3 中药现代化的目的及意义23-241.4 本课题的研究内容及意义24-252. 实验部分25-382.1 实验仪器及试剂25-262.1.1 实验仪器25-262.1.2 实验试剂262.2 分析条件的建立及标准曲线的绘制26-272.2.1 高效液相色谱分析条件的建立262.2.2 标准曲线的绘制26-272.3 芍药中有效组分的溶剂提取27-312.3.1 正交设计法下的溶剂提取实验28-292.3.2 均匀设计法下的溶剂提取实验292.3.3 球面设计法下的溶剂提取实验
29-312.3.4 提取溶液的浓缩及干燥312.4 白芍粗提物中芍药苷及芍药内酯苷的提取31-332.4.1 大孔吸附树脂的预处理312.4.2 树脂的吸附量和吸附率的测定31-322.4.3 两种树脂的分离效果比较322.4.4 梯度洗脱各阶段洗脱体积的实验322.4.5 吸附分离溶液的后处理32-332.5 芍药苷及芍药内酯苷的模拟移动床分离实验
33-382.5.1 SMB 原料的配制332.5.2 模拟移动床分离柱的填充、对称性比较和柱效测定33-342.5.3 模拟移动床分离芍药苷及芍药内酯苷操作参数的初步选择34-372.5.4 模拟移动床分离稳定性的考察372.5.5 模拟移动床分离产品的后处理37-383. 实验结果和讨论
38-623.1 芍药苷和芍药内酯苷的标准曲线及拟合方程383.2 芍药中有效组分的溶剂提取38-443.2.1 正交设计溶剂提取38-393.2.2 均
匀设计溶剂提取39-423.2.3 球面设计溶剂提取42-433.2.4 三种溶剂提取设计方法的比较43-443.3 白芍粗提物中芍药苷及芍药内酯苷的大孔吸附树脂提取44-503.3.1 两种树脂对芍药苷的吸附量和吸附率比较44-463.3.2 两种大孔吸附树脂对白芍粗体物中芍药苷及芍药内酯苷的提取46-483.3.3 两种大孔吸附树脂的分离效果比较483.3.4 洗脱液比例及洗脱体积的确定48-493.3.5 洗脱液的后处理49-503.4 模拟移动床色谱分离芍药苷和芍药内酯苷50-623.4.1 模拟移动床分离柱的柱效及对称性50-513.4.2 固定相ODS 吸附实验结果51-523.4.3 洗脱流动相比例对分离结果的影响52-533.4.4 洗脱流速的选择53-543.4.5 切换时间（ts ）对分离结果的影响
54-573.4.6 冲洗流速的选择573.4.7 温度对模拟移动床分离区间的影响57-593.4.8 模拟移动床分离工艺参数593.4.9 模拟移动床分离稳定性的考察59-624. 实验结论62-63参考文献63-68致谢68-69攻读学位期间发表的学术论文目录69。