摘要
目的为了探究中药水煎液中是否存在有机成分与金属微量元素形成的配合物。方法研究槲皮素与5种金属离子在热水中形成配合物的能力,并在此基础上,用高效液相色谱仪对甲醇和20%甲酸-甲醇分别溶解的四种含槲皮素的中药的水提物进行分析。结果槲皮素与Cu~(2+)和Fe~(3+)形成配合物的能力较强。用20%甲酸-甲醇做溶剂时,山楂、黄山贡菊、鱼腥草和紫花地丁水提物中槲皮素的峰面积较甲醇做溶剂时分别增加了37.55%、207.35%、378.53%和234.68%。结论在水煎煮过程中,槲皮素会与中药中存在的金属微量元素形成配合物。
引文
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