Carnosic acid obtention and uses
US5256700A · kind A · utility
13Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1991 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Sep 18, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Carnosic acid is obtained by extracting sage and rosemary with an apolar solvent, contacting the extract with an adsorbent material to separate carnosic acid from apolar compounds of the extract, desorbing the adsorbent with a polar solvent and then evaporating the solvent to obtain a residue containing carnosic acid. The carnosic acid contained in the residue may be purified by crystallizing it from the residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.