Method for separating and purifying dihydroquercetin from fructus amomi

The invention discloses a method for separating and purifying high-purity dihydroquercetin from fructus amomi, which comprises the following steps of: drying fructus amomi medicinal material, crushing, performing hot reflux circulation extraction, concentrating, crystallizing, recrystallizing, performing chromatographic column elution, collecting fractions, and freeze-drying to obtain a pure dihydroquercetin product with the purity higher than 99.50%. The raw materials used in the method comprise fructus amomi pericarp, fructus amomi, fructus amomi seed clusters and other components, the raw materials are wide in source and easy to obtain, the used extraction equipment is common, the extraction solvent is low in cost, the purification process is convenient and fast, the period is short, and a new method is provided for preparing the high-purity dihydroquercetin. 本发明指出了一种从砂仁中分离纯化出高纯度二氢槲皮素的方法，包括将砂仁药材进行烘干、粉碎、热回流循环提取、浓缩、结晶、重结晶、色谱柱洗脱、馏分收集及冷冻干燥，获得纯度高于99.50％的二氢槲皮素纯品。本发明使用的原料包括砂仁果皮、果实及种子团等各个组成部分，原料来源广泛、易得，所用提取设备常见，提取