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厚朴(Magnolia officinalis Rehd.etWils.;M.officinalis Rehd.et Wils.var.bilobaRehd.et Wils.)中含厚朴酚(magnolol),及其异构体——和厚朴酚(honokiol),前者含量可高达5%,为厚朴抗菌作用的有效成分。中国药典1977年版一部规定用厚朴氯仿提取物的乙醇溶液,分别加入5%三氯化铁甲醇溶液、硝酸汞溶液、间苯三酚盐酸溶液检查酚性成分的方法鉴别厚朴。但据报道,三氯化铁、硝酸汞溶液与厚朴酚反应受多种因素干扰,反应不明显。中成药中的厚朴除粉末镜检外,尚无理
Magnolia officinalis Rehd.et Wils.; M.officinalis Rehd.et Wils.var.bilobaRehd.et Wils. contains magnolol and its isomer, honokiol, The former can be as high as 5%, which is an effective ingredient of Magnolia officinalis. According to the 1977 edition of the Chinese Pharmacopoeia, the ethanol extract of Magnolia officinalis was added to the ethanol solution of 5% ferric chloride, mercury nitrate, and phloroglucinol hydrochloride to determine the phenolic composition. However, it was reported that the reaction of ferric chloride and mercury nitrate solution with honokiol was interfered by many factors and the reaction was not obvious. There is no reason for Magnolia officinalis in addition to powder microscopy in proprietary Chinese medicines.