[Studies on the methods of extract and determination of total tannins and gallic acids of the root of Euphorbia hylonoma].

Objective: To determine total tannins and gallic acid of the root of Euphorbia hyloomla.

Methods: With the gallic acid as reference, tannins and gallic acid of the root of Euphorbia hylonoma were determined by ultraviolet spectrophtometer and high performance liquid chromatography, respectively.

Results: The content of tannins of the root of Euphorbia hylonoma were determined by different extract methods, including extracted by water, 70% alcohol, acetone on supersound, the determination data were 4.