Method for recovering acarbose from acarbose recovery liquid

The invention discloses a method for recovering acarbose from acarbose recovery liquid, which comprises the following steps: filtering the acarbose recovery liquid, taking filtrate, and adjusting the pH value to obtain pretreatment liquid; feeding the pretreatment liquid into a sample by using a strong acid type chromatographic column and a low-pressure chromatographic column, eluting with acid, collecting an acarbose elution component, and performing post-treatment to obtain acarbose. According to the method, the purity of acarbose is detected by using a rapid high performance liquid chromatography. According to the method, the operation process is simple and convenient to operate, the purity of the acarbose purified in one step is up to 96% or above, meanwhile, the impurity II and the impurity IV can be effectively removed, and the recovery rate of the acarbose is up to 85% or above. 本发明公开了一种从阿卡波糖回收液中回收阿卡波糖的方法，包括以下步骤：先将阿卡波糖回收液过滤后，取滤液调节pH得预处理液；再使用强酸型色谱柱低压层析色谱柱将预处理液进样，用酸洗脱，收集其中的阿卡波糖洗脱组分，后处理得到阿卡波糖。本发明还使用快捷的高效液