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采用加盐迴流蒸馏法制备柴胡注射液,能提高挥发油含量。现将加盐蒸馏法、加盐迴流蒸馏法、迴流蒸馏法三种方法比较介绍如下。一、提取方法(1)加盐蒸馏法:分别取100g过20目筛的药材粗粉4份,加适量水浸泡24小时后,分别加3倍量的不同浓度的(10%、20%、30%)NaCl水溶液,加热蒸馏,首次收集蒸馏液400ml,重蒸馏收集100ml,加吐温-80 2.0ml,NaCl O.85g,G_3垂溶漏斗精滤,配制成注射液,进行含量测定。(2)加盐迴流蒸馏法:取100g过20目筛的药
The use of salt reflux reflux distillation method to prepare Bupleurum injection can increase the volatile oil content. The salt distillation method, the salt reflux distillation method, and the reflux distillation method are compared and described below. First, the extraction method (1) salt distillation method: Take 100g over 20 mesh sieve 4 powder, add appropriate amount of water for 24 hours, add 3 times the amount of different concentrations (10%, 20%, 30%) aqueous solution of NaCl was heated and distilled. 400ml of distillate was collected for the first time. 100ml of distillate was collected by re-distillation. Tween-80 2.0ml, NaCl O.85g, and G_3 pitting funnel were finely filtered to prepare an injection for content determination. (2) Salt reflux distillation method: Take 100g of medicine passing through 20 mesh sieve