Plant rhamnogalacturonan II complexation of heavy metal cations
US5877164A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 22, 1996 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Nov 22, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62D2101/43
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention provides rhamnogalacturonan-II (RG-II) and relates to its ability to complex specific multivalent heavy metal cations. In the presence of boric acid, RG-II monomers form dimers that are cross-linked by a borate ester. The yield of such borate ester cross-linked dimers of RG-II is enhanced in the presence of specific heavy metal cations. The present invention further relates to the utility of RG-II in assays for the detection of specific heavy metal contamination; as a reagent useful in the removal of specific heavy metal cations contaminating foods and liquids, for example, fish, wines, etc.; as a pharmaceutical composition useful as an antidote in specific heavy metal cation poisoning; as a treatment for the detoxification of specific heavy metal cations from blood and/or tissues; and in a method of remediation of waters and soils contaminated with specific heavy metal cations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.