Abstract

Seaweeds are an important source of bioactive metabolites for the pharmaceutical industry in drug development. Many of these compounds are used to treat diseases like cancer, acquired immune-deficiency syndrome (AIDS), inflammation, pain, arthritis, as well as viral, bacterial, and fungal infections. This paper offers a survey of the literature for Gracilaria algae extracts with biological activity, and identifies avenues for future research.Algae are relatively simple photosynthetic plants with unicellular reproductive structures. These marine algae have different biomasses and among these Graceleria edulis were choosen to carry out antibacterial activity against gram (+) and gram (-) organism. The constituents were extracted using 2 different solvents i.e. ethanolic extract and aqueous extract. The antibacterial activity is carried out by Agar Disc method. The aqueous and the ethanollic extract have shown good antibacterial activity against E.coli, S.aereus and B.subtilis. The ethanol extract showed better result than aqueous extracts. The maximum antibacterial activity was noted in ethanol extracts of Graceleria edulis (GEEA) which showed highest inhibitory activity against E.coli (26 mm) and the minimum was recorded in aqueous extracts of Graceleria edulis (GEAE) against E. coli (10 mm).