Disclosed herein is an extraction method for increasing liquiritigenin content in Glycyrrhizae Radix et Rhizoma or Glycyrrhizae radix extract, the method comprising: using water, an organic solvent, or a mixed solvent of water and the organic solvent to Glycyrrhizae Radix et Rhizoma to extract a product containing liquiritin (Step 1); and introducing water, an organic solvent, or a mixed solvent of water and the organic solvent into the product containing liquiritin extracted in Step 1, adding acid or base into the solution, and hydrolyzing the mixture to prepare a product containing liquiritigenin (Step 2).
展开▼
