There are some reports in the literature of the antioxidant
capacity of algae. Alcoholic and aqueous extracts of seaweeds
have been evaluated for antioxidant activity by lipoxygenase
inhibition, DPPH assay, and deoxyribose assays
[51-52]. Recently, several marine alginate derivatives, sulfated
fucoidans from the brown seaweed Laminaria japonica,
agar-like sulfated galactans from the red seaweed Nori, and
sulfated polysaccharides from Fucus vesiculosus, have been
reported to have antioxidant activity [53-55].