eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2015-02-16 2 2 277 280 771 article Varahalarao Vadlapudi 1,2 K. Chandrasekhar Naidu 1 Department of Botany, Andhra University, Vishakhapatnam, A.P (India). Department of Biochemistry, Dr Lankapalli bullyya Post Graduate College, Visakhapatnam - 530 013 (India). In this present study the in vitro antimicrobial activities of marine algae Gracilaria corticova (Gracilariaceae), Gelidium pusillum (Galidiellaceae), Chetomorpha annetina (Cladophoraceae), Ulava lactuca (Ulvaceae) from coastline of Bay of Bengal, visakhapatnam .Soxhlet extraction method used to get the methanolic extracts . The antimicrobial activities of the organic solvent extracts on the various test microorganisms, including bacteria and fungi investigated using agar well diffusion technique. The length of inhibition zone was measured in millimeters from the edge of the well to the edge of the inhibition zone. Results of the present study confirmed the potential use of seaweed extract as a source of antimicrobial compounds. https://biomedpharmajournal.org/vol2no2/in-vitro-antimicrobial-potentiality-of-some-marine-algae-against-selected-phytopathogens/ Ulava lactuca Antimicrobial activity Macroalgae Soxhlet extraction