Process for culturing a microalga, and extracting a polysacchari

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

1982-04-26

1983-11-29

Bagwill, Robert E.

Plant husbandry

Algae culture

435101, A01G 700

Patent

active

044174152

ABSTRACT:
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 polysaccharide 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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