hexane

METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.

方法将朴酚两羟基缩酮保护,再正己烷重结晶分纯化。

The perservative in liquid beverage was extrcated with n-hexane.The hexane layer was subjected to cyclodextrine polymer resin colume.The colume was eluted with aqueous solution of ethanol.

正己烷萃取液体饮料中的防腐剂，使萃取液经环糊精交树脂分，乙醇溶液洗脱。