黄芩素制备工艺研究

目的研究由黄芩苷制备黄芩素的最佳工艺。方法采用直接酸水解法和热裂解法相比较，以黄芩素的含量和得率为指标，对其制备工艺进行优化。结果热裂解方法中当温度超过200℃时，可以获得含量为94．47％以上的黄芩素，得率不高于41．64％，而直接酸水解方法获得黄芩素的含量为92．15％以上，且得率为66．03％以上。结论直接酸水解法制备黄芩素工艺简单可行，得率较高，实用性强。

Study on the prepared process for baicalein

Objective To study the optimal prepared process for Baiealei from Baicalin. Methods With the content and the yield Baicalei of as the indexes, eompaxed the direct acid-splitting with the pyrolysis, the process will be optimized. Results when pyrolytic temperature reaches 200℃, the content and the yield of Baicalei axe respectively more than 94. 47% and less than 41.64% ,which axe respectively more than 92. 15% and 66. 03% by the direct acid-splitting. Condusiou The process for Baicalei by the direct acid-splitting is simple, feasible and has strong practicability; also the yield rate of Baicalei is high.