Ditermination of Total Flavone Content in Different Kinds of Parched Medicinal Materials of Vitex Trifolia L.
蔓荆子及其不同程度炒制品总黄酮含量测定

Objective To determine the total flavone content in different kinds of parched medicinal materials of Vitex trifolia L. Method To apply ultraviolet spectrophotometry and take rutin for control sample to test the absorption rate of flavone of various samples of vitex trifolia L. at 510nm so as to determine their respective total flavone content. Result The total flavone contents of the raw material, slightly parched material, scorchedly parched material, charredly parched material and over-charredly parched material of Vitex trifolia L. are 5.65%, 5.81%, 7.88%, 9.36% and 0.31% respectively. Conclusion With the increasing degree of parching the total flavone content of Vitex trifolia L. goes up first and decreases later and even nearly lose all its flavone because of being overparched.