Method for preparing aloin by extraction
US6506387B1 · kind B1 · utility
4Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Feb 16, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H7/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a method for preparing aloin which consists in extracting from a substance containing aloe, in particular the yellow sap of aloe or a derived product, in the presence of an aliphatic diol or triol with low molecular weight, for instance glycerol or a glycol, followed by a purification by crystallization in an alcohol. The invention is useful for industrial preparation of aloin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.