Investigation and Antibacterial Activity of Libyan Macroalgae Ulva fasciata

Abstract

Marine macroalgae are considered as an excellent source of bioactive compounds which has a broad range of biological activities including antibacterial and antioxidant. The qualitative phytochemical screening of the methanol extract and ethyl acetate extract of Ulva fasciata revealed the presence of Carbohydrates, Steroids, Flavonoids, gums and mucilage, Tannin & Phenols, Saponins, Proteins, and glycosides in both extract .Antibacterial activities of the methanol extract and ethyl acetate extract of Ulva fasciata from Benghazi coast was evaluated against both Gram positive and Gram negative human pathogens bacteria by agar well diffusion method.The results indicated that this species of seaweed collected from the coast of Benghazi present a significant capacity of antibacterial.