苦豆子生物碱单体的分离纯化工艺研究Isolation and Purification Technology of Monomeric Alkaloids from Seeds of Sophora alopecuroides L.
王洪新,马朝阳,陶冠军
摘要(Abstract):
在对苦豆子的酸水浸提液进行了超滤和脱色预分离的基础上,采用不同的有机溶剂萃取和硅胶柱层析对其中主要的生物碱进行分离纯化及条件优化。结果表明合适的生物碱萃取富集条件是用氯仿为溶剂,pH=10.5。该氯仿萃取液用硅胶柱层析分离,洗脱剂为氯仿-甲醇-氨水(5:0.4:0.01,V/V/V),洗脱速度1柱床体积·h-1,得到峰1~峰3。峰1和峰2中的化合物经丙酮结晶和重结晶分别得到纯度99%以上的氧化槐果碱和氧化苦参碱;峰3对应的组分再经硅胶柱层析,洗脱剂为丙酮-甲醇(10:1,V/V),洗脱速度1柱床体积江南大学食品学院教育部食品科学与安全重点实验室·h-1,得到峰4~峰6,峰4中的化合物经石油醚结晶和重结晶,可以得到纯度95.8%的槐定碱。采用了HPLC-MS,IR,熔点测定和薄层色谱等方法进行上述生物碱单体的定性定量及分子结构确定。本研究为深度开发苦豆子生物碱资源和为制备医药工业所需的高纯度生物碱原料提供了依据。
关键词(KeyWords): 苦豆子;生物碱单体;萃取;硅胶柱层析;结晶
基金项目(Foundation):
作者(Author): 王洪新,马朝阳,陶冠军
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