Known only in the Phaeophyceae, phlorotannins (brown algal polyphenols
) are a class of natural products with potential uses in pharmacology.
This study reports that phlorotannins from Sargassum kjellmanianum ca
n prevent fish oil from rancidification; the antioxidation activity wa
s about 2.6 times higher than that of 0.02% BHT (tertbutyl-4-hydroxyto
luene).