The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 1982
Filed:
Apr. 04, 1980
Applicant:
Inventors:
Michel Rebeller, L'Etang la Ville, FR;
Pierre Yout, Vienne, FR;
Daniel Lonchamp, Tassin la Demi-Lune, FR;
Assignee:
Institut Francais du Petrole, Rueil-Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A23L / ;
U.S. Cl.
CPC ...
2601 / ; 426540 ; 426429 ; 426431 ; 426481 ; 435 67 ; 435946 ; 8646 ; 424 63 ;
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.