Phycocyanin is a dark blue powder isolated from spirulina. Mainly exists in cyanobacteria, red algae and cryptophytes. Phycocyanin is usually also divided into C-phycocyanin and R-phycocyanin. The former is mainly found in cyanobacteria, the latter is mainly found in red algae, and cryptophycos have both. Its function is to absorb light (orange-yellow) energy and transmit light energy. It is not only a kind of protein, but also an excellent natural food coloring, and at the same time a good health food.
Phycocyanin is one of the rare pigment proteins in nature. It is not only bright in color, but also a nutrient-rich protein with complete amino acid composition and high essential amino acid content. Phycocyanin is widely used as a high-grade natural pigment in food and cosmetics.