Method for preparing an extract of centella asiatica
US9487552B2 · kind B2 · utility
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1References
15Claims
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Assignee
Inventor
Key dates
| Filing date | Sep 2, 2011 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2236/39
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
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 recrystallization step using a mixture of solvents, comprising water and an alcoholic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.