Determination of total organic acids and salicylic acid in extract of Radix isatidis / 中国中药杂志

<p><b>OBJECTIVE</b>To develop a quantitative method for determination of the total organic acids and salicyclic acid in the extract of Radix Isatidis.</p><p><b>METHOD</b>The total organic acids were determined by acid-base titration and the salicylic acid was determined by HPLC.</p><p><b>RESULT</b>It was shown that contents of total organic acids and salicylic acid in the extract of Radix Isatidis were 13.0% and 0.22%, respectively.</p><p><b>CONCLUSION</b>The method can control the quality of this extract effectively and accurately.</p>