Actually algae - composed of various bio-active constituents which should be first collected from review literature of the selected algae or laboratory work is necessary to estimate the bio-active compounds. Anti-oxidant activity of algae - checked by DPPH method with minimum quantity of algae sample and positive & negative control should be used... & nutritional content of algae can also be estimated by AAS or ICP-MS... Based on these criteria algae can be selected...