The Bretagne Spiruline company cultivates spirulina, a microalgae that is part of cyanobacteria, used as a food supplement because it is rich in proteins, amino acids, vitamins (B1, B2, B3, B5, B6, B9 and B12, E and K), minerals , trace elements (calcium, chromium, boron, magnesium, cobalt, iron, potassium, zinc, copper, phosphorus, sodium?), enzymes and amino acids. Spirulina can be consumed in granules and is part of the composition of various products (chocolate, soap ...). Landaul. Morbihan (56). France.