METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.
法
羟基用缩酮保护,再用正己烷重结晶分离纯化。
METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.
法羟基用缩酮保护,再用正己烷重结晶分离纯化。
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.
用正己烷萃取液体饮料中的防腐剂，使萃取液经环糊精交联树脂分离后，用乙醇溶液洗脱。
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