基;
剂;
;METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.
方法将
朴酚两羟基用缩酮保护,再用正
重结晶分离纯
。
]METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.
方法将朴酚两羟基用缩酮保护,再用正重结晶分离纯。
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.
用正萃取
体饮料中的防腐剂，使萃取经环糊精交联树脂分离后，用乙醇
脱。
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