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发明授权
CN1793123B 一种由万寿菊干花制备叶黄素晶体的方法 失效 - 权利终止

一种由万寿菊干花制备叶黄素晶体的方法
摘要：
本发明公开了一种从万寿菊干花制备叶黄素晶体的方法。它主要是在万寿菊干花粉碎物中直接加入KOH·乙醇溶液进行皂化处理；紧接着对皂化粗提物加水，并用酸类物质中和，过滤分离后加入乙酸乙酯，再去除沉淀物，蒸馏提取叶黄素粗品；然后，用去离子水洗涤，形成叶黄素粗结晶；最后，用四氢呋喃和去离子水重结晶，并再用去离子水和无水乙醇洗涤，真空干燥制得纯度达90％以上的叶黄素晶体。本发明方法工艺操作简便，所用溶剂毒性低且易于回收、制备成本低，提取率高，适用于工业规模化生产。
摘要（英）：

The invention discloses a method to make xanthin crystal from marigold dried flower. It includes the following steps: directly adding KOH.ethanol solution into the marigold dried flower smashed material to take saponifying process; adding water to the raw distilling material, neutralizing by acid material, filtering adding ethyl acetate, removing deposit, distilling raw xanthin; washing by deionized water to form xanthin raw crystal; finally, recrystallizing by tetrahydrofuran and deionized water, washing by deionized water and absolute ethyl alcohol, the xanthin crystal that has purity over 90% would be gained after vacuum drying. It is easy to operate, low cost, high extraction rate, etc.

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