杂质 ,得灰色沉淀 ,80℃干燥
提取 3次 ,每次 2h ,回收
) =5 %的盐酸溶解
,V(NH3·H2 O)∶V(H2 O) =1∶1的氨水调pH =8 5～ 9,析出无色针晶即为精品小檗胺
为 16 % ,质量分数
Using berberine mother liquor as starting material and adjusting pH to 8-9,a gray precipitate is obtained.The water soluble foreign matters are divided by acid dissolving and alkali precipitating.After being exsiccated at 80 ℃,the precipitate is extracted 3 times with ether in a continual reflux assembly over 40 ℃ bain marie for 2 h each time.After drawing over the solvent,a white solid is gained.By dissolving in 5% HCl and adjusting pH to 8.5-9 with ammonia water,the refined berbamine is precipitated as c...