Patent ID: 8337858

Claim:
An aqueous extract of a Klamath microalgae, Aphanizomenon Flos Aquae Aquae Ralfs ex Born. & Flah. Var. flos aquae (AFA Klamath), obtained by the following steps: a) harvesting AFA Klamath, freezing the harvested AFA Klamath and thawing it or, if the starting material is dried AFA Klamath powder, diluting the dried AFA Klamath powder in water, and sonicating the diluted AFA Klamath powder to disrupt cells; b) centrifuging the thawed AFA Klamath or the sonicated AFA Klamath powder to separate supernatant from a precipitate; c) collecting the supernatant containing the water-soluble components; d) concentrating the water-soluble components by subjecting the supernatant obtained in step c) to size-exclusion ultrafiltration with a molecular weight cut-off of 30 kDa to obtain a retentate and a filtrate, wherein the retentate is the aqueous extract of AFA Klamath concentrated in the water-soluble components, phycocyanin/phycoerythrocyanin complex (C-PC/PEC), phycoviolobilin and AFA phytochrome.