Method for extracting refined astragaloside from astragaliradix

Abstract

The invention discloses a method for extracting refined astragaloside from astragaliradix. Astragaloside is a lanolin alcohol-form tetracyclic triterpenoid saponin compound. A Chinese herbal medicine astragaliradix is rich in astragaloside. The method utilizes a series of high-efficiency extraction, separation and purification technical processes of ethanol reflux extraction, alkaline hydrolysis, macroporous resin purification, ion-exchange resin decoloration and recrystallization to realize extraction of a target compound which is white powder and has a yield more than 0.07% and purity more than 99%. The method is simple, can be operated easily, does not produce pollution and is suitable for large-scale production.

Description

technical field

[0001] The invention relates to a method for extracting and refining astragaloside IV from safflower. Background technique

[0002] Astragalus membranaceus ( Fisch. ) Bge. var. mongholicus (Bge. ) Hsiao or the dried root of Astragalus membranaceus ( Fisch. ) Bge. Astragalus membranaceus is a mesophyte that grows in mountainous forest margins, shrubs and sparse forests. Distributed in the Altai Mountains in Xinjiang, Daxingan Mountains, Xiaoxing'an Mountains, Wanda Mountains, Zhangguangcai Mountains, Laoye Mountains, Changbai Mountains in the northeast of China, and the mountains in eastern Liaoning and Yanshan Mountains, Taishan Mountains, Xiaowutai Mountains, Hengshan Mountains, Wutai Mountains, Loess Plateau, Taiyue Mountains, The north of Qinling Mountains and Hengduan Mountains; Mongolian Astragalus membranaceus is an arid mesophyte, which grows in mountain grasslands, shrubs, forest margins, and ditch sides. Distributed in Baiyinxile, Xilin Gol, Keshik...