Porphyridium Extract

The extracellular polysaccharide produced by this red microalga, rhodophyceae, has sulfate groups attached to the backbone and non-reducing terminal D-xylopyranosyl and galactopyranosyl residues. It is known that this polysaccharide has antioxidant and anti-irritation properties, and the xylitol residues may be responsible in part for the some of these benefits.