Abstract:Some substances with activity of superoxide dismutase (SOD) extracted from fresh algae can scavenge superoxide radical (O). The activity of SOD in algae is usually 60 - 280 U g-1FW, but that in Ulva pertusa, Gracilaria verrucosa and G. eucheumoides is higher (about 300 U g-1FW). In general, the activity and stability of SOD in algae are in order: green algae>red algae>brown algae. The main types of SOD in green algae are CuZn-SOD, but in blue algae, Fe-SOD. The result of PAGE and SOD active staining of the ...