Spirulina Extract(Phycocyanin) is a natural blue extracted from spirulina. It's water-soluble pigment, non-toxic, pure, lovely clear. Not only bright colours but in itself is a nutritious protein, amino acid composition range, high content of essential amino acids. Specificationï¼? Phycocyanin E6 Grade: Food Grade Character: Blue powder, with red fluorescence Odour& taste: Characteristic Ingredients: 15%Spirulina concentrate, 80% Trehalose, 5%Trisodium citrate Color Value: 60 CAS No.:11016-15-2