[Decolorization of spirulines].

Spirulinae algae are available as a high protein content food (60 p. 100 at least) but as a very colored one. Colored matters of Spirulinae may be subdivided in three classes: Chlorophyll-a complexes carotenoïds and xanthophylls-phycocyanin and phycoerythrin. Obtaining a "decolored Spirulinae meal" has been studied first at laboratory level, then at microindustrial level (20 kg). Dry Spirulinae decoloration with ethanol and acetone lead to a pale-yellow Spirulinae meal with 80 p. 100 efficiency; it is fine practically odorless and including 84.2 p. 100 proteins. Essential amino-acids pattern and lysin-availability are near to first values. Residual solvent contents are 40 ppm for acetone, and 60 ppm for ethanol. The assays of incorporation into european taste food or mexican taste food has conducted to a usual good acceptance. The new productean allow the protein enrichment of a great variety of human food, without color nor hygeinic and nutritional inconvenience.