Phycocyanin is a dark blue powder isolated from spirulina. They are mainly found in cyanobacteria, red algae and cryptoalgae. Phycocyanin is also commonly divided into C-phycyanin and R-phycyanin, the former is mainly found in cyanobacteria, the latter is mainly found in red algae, cryptoalgae have both. Its function is to absorb light (orange) energy and transmit light energy. It is not only a protein but also an excellent natural food coloring, as well as a good health food.
It can be used as a pigment in food processing and also as raw material for healthy food