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本法又叫“一次醇沉酸碱处理法”或“醇溶液PH沉淀法”,是一种提取有效成分为非挥发水溶性物质的新工艺。工艺过程 1.浸出:有两种方法:①以水为溶媒,煎煮2-3次,合并滤液,浓缩成1∶1浓度;②以60％乙醇为溶媒,用渗漉法提取。 2.醇沉:水煮浓缩液加入1.5倍乙醇,静置24小时,过滤。以醇为溶媒者不需要此步骤。 3.醇药液PH升值处理:先测出含醇药液PH值,按所测值上升三值。如醇药液PH为6,则用10％氢氧化纳调至PH
This law is also called “an alcohol acid-base treatment method” or “alcohol solution PH precipitation method” is a new technology to extract the active ingredient of non-volatile water-soluble substances. Process 1. Leaching: There are two ways: ① water as the solvent, boiling 2-3 times, the filtrate was concentrated to 1: 1 concentration; ② 60% ethanol as the solvent, with percolation method. 2. Alcohol sink: boiled concentrated liquid was added 1.5 times ethanol, allowed to stand for 24 hours, filtered. Alcohol-based solvents do not need this step. 3. PH value of alcohol liquid treatment: first measured PH value of alcohol-containing liquid, according to the measured value increased by three. If the alcohol solution PH is 6, then use 10% sodium hydroxide adjusted to PH