Process for culturing a microalga, and extracting a...

Details Process for culturing a microalga, and extracting a... Process for culturing a microalga, and extracting a...

C - Chemistry, Metallurgy

12

P

195/140

C12P 19/04 (2006.01) C12N 1/12 (2006.01)

Patent

CA 1189010

PROCESS FOR CULTURING A MICROALGA, AND EXTRACTING A POLYSACCHARIDE THEREFROM Abstract of the Disclosure Porphyridium cruentum is cultured in an enriched seawater medium using a high initial cell concentration until the productivity of polysaccharide production by the alga is maximized. The whole culture is then extracted by making the culture strongly alkaline, and heat treating it. The culture is cooled, acidified and the poly- saccharide precipitated by addition of a water-miscible organic solvent such as ethanol. Very high yields of polysaccharide are obtained, in excess of 4.5 grams per liter of culture.

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