| 摘要 |
The invention relates to a method for preparing a refined extract of Centella asiatica comprising a mixture of madecassoside and terminoloside. The method comprises: passage over adsorbent resin; elution with an eluent comprising at least 30 wt.-% of an alcoholic solvent; and a recrystallisation step using a mixture of solvents, comprising water and an alcoholic solvent. |
