Removing and recovering plant polyphenols
US5141611A · kind A · utility
47Cited by
8References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1989 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Sep 27, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2311/2626
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Polyphenolic substances such as food dyes, tannins, fruit juices and wine colorings are removed from a solution by adsorption onto a regeneratable adsorbent polyamide of extended surface and controlled porosity. The surface chemistry of the polyamide may be modified by a glutaraldehyde/resorcinol treatment. The polyphenolic substances are recovered by elution with water or other protonic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.