Spirulina gets its blue-green color from a protein-bound pigment called phycocyanin. Phycocyanin allows spirulina to absorb light at wavelengths different from those absorbed by chlorophyll. This is cool because spirulina can be more proficient at completing light-dependent interactions necessary for photosynthesis. Phycocyanin has been shown to have antioxidant and anti-inflammatory properties because it binds free radicals that result from oxidative processes at the cellular level, effectively making them nonreactive and reducing their risk to cellular activity.

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