Removal of trace heavy metal contaminants from algae and the carrageenan contained therein
US4112223A · kind A · utility
9Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1976 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Oct 26, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B37/0042
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Heavy metal contaminants which are normally present in trace amounts are removed from those algae of the genera Gigartina and Iridaea which contain a major amount of lambda type or non-gel-forming carrageenan and from the carrageenan itself by soaking the algae in a solution containing a water-soluble potassium salt which does not cause appreciable extraction of the carrageenan from the algae.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.