Problemas asociados con polyfendes cuando selecciona extractos de algas pardas para la actividad biológica / Problems associative with polyphenols when screening extracts of brown algae for biological activity

High levels of activity were detected when extracts of certain brown algae were tested for the presence of enzyme inhibitiors, lectins and DNA- cleaving compounds. Partial purification of these extacts by dialysis against water revealed that the compounds active in all three test were high molecular weight polyphenols. The active species included ascophyllum nodosum, Fucus serratus and F.versiculosus