Fresh algae were dried in a recirculating air oven at 40C for 15 h, and then ground. Portions of dehydratedP. capillacea (134 g) andO. obtusiloba(120 g) were subjected, separately, to exhaustive extraction with cold hexane and then with 70% EtOH. The Hex and 70% EtOH extracts were concentrated inrotary evaporator.