Nutrition

Cyanobacteria contain other photosynthetic pigment other than chlorophyll, such as Phycobilins. Phycobilins are efficient because they are able to efficiently absorb red, orange, yellow, and green light, the light wavelengths which are not well absorbed by chlorophyll. There are three types of Phycobilins, which are phycocyanin (blue), phycourobilin (orange), and phycoerythrin (red). Different combinations of each phycobiliproteins can be found to approve different and specific spectroscopic properties.