Process for selectively extracting dyestuffs contained in cyanophyceae algae, the so-extracted dyestuffs and their use, particularly in foodstuffs
US4320050A · kind A · utility
19Cited by
3References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 4, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Apr 4, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/946
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Process for extracting dyestuffs and particularly a blue pigment, called phycocyanine, from cyanophyceae algae, particularly of the Spirulina species, comprising contacting said algae with a first aqueous phase containing calcium ions, separating therefrom the mass of algae and contacting it with a second aqueous phase of alkaline character, separating the algae therefrom and extracting phycocyanine from said second aqueous phase by subjecting the same to an ultrafiltration step for concentrating the solution and then to a drying step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.