乙醇俗称酒精,为无色澄明液体,易挥发,不同浓度的乙醇所具有的用途也不同,其用途也相当广泛。1　常用浸出溶剂乙醇为半极性溶剂,能与水任意混溶,因此,不同浓度的乙醇水溶液具有较强的选择浸出性能,一般90%以上的乙醇可浸出挥发油、有机酸、内酯、树酯等;50%～70%乙醇可浸出生物 Ethanol, commonly known as alcohol, is a colorless and clear liquid, volatile, different concentrations of ethanol have different uses, its use is quite extensive. 1 commonly used leaching solvent Ethanol is a semi-polar solvent, can be miscible with water, therefore, different concentrations of ethanol aqueous solution has a strong selection of leaching performance, generally more than 90% ethanol leaching volatile oil, organic acids, lactones, Esters, etc .; 50% ~ 70% ethanol leachable organisms