Name of the Seaweeds Concentration (µg/ml ) O.D of Absorbance at 660 nm % of  inhibition GracillariaEdulis Control 8 - 100 0.7 68.75% 200 1.4 74.50% 300 0.2 78.21% 400 1.9 98.75% SyringodiumIsoetifolium Control - - 100 0.1 25.35 200 0.3 42.12 300 0.4 46.25 400 1.2 77.25

Table 1: Inhibition of α amylase activity of synthesized silver nanoparticles from seaweeds.