ISSN: 2320-5407 Int. J. Adv. Res. 5(1), 751-759 751 Journal Homepage: -www.journalijar.com Article DOI:10.21474/IJAR01/2810 DOI URL: http://dx.doi.org/10.21474/IJAR01/2810 RESEARCH ARTICLE BACTERIA EXTRACT ACTIVITY ASSOCIATED WITH SPONGESHaliclonasp.2 ANDAxinellid sp.AS ANTIBACTERIAL. Endang Sulistyarini Gultom 1 , Dwi Suryanto 2 , Erman Munir 2 and Diky Setya Diningrat 1 . 1. Biology Department, FMIPA, Medan State University. Jl. Willem Iskandar Pasar V, Medan 20221, Indonesia. 2. Biology Department, FMIPA, University of North Sumatera. Jl. Bioteknologi 1, Medan 20155, Indonesia. …………………………………………………………………………………………………….... Manuscript Info Abstract ……………………. ……………………………………………………………… Manuscript History Received: 15 November 2016 Final Accepted: 17 December 2016 Published: January 2017 Key words:- Haliclona sp.2 andAxinellid sp., antibacterial, thin layer chromatography, sponges. Isolation of bacteria for antibacterial activity was conducted on sponge- associated marine bacteria, Haliclona sp.2 and Axinellid sp.from Ngge Island, Sibolga. Seventeen isolates were obtained from the two sponges. Based on antibacterial test, 11 isolates(64%)were potential as antibacterial, whereas 6 isolates (35%) were not indicatedas antibacterial. Isolate H2, A1, and A2 with broad spectra of antibacterial activity were further separated for extraction of secondary metabolites. Based on screening results of isolates, etil acetate extract of isolate H2,A1, A2 and n-hexana extract of isolate A2 displayed antibacterial against Staphylococcus aureusandEscherichia coli, whereas methanol extract A2 was only able to inhibit the growth of Escherichiacoli. For bioactive compound test, EH2, EA1 and EA2 were positive for alkaloid, whereas HA2 and MA2 were positive for alkaloid and saponin. Based on purification of secondary metabolite using Thin Layer Chromatography (TLC), there were22 fractions with solvents of different polarities. Screening of antibacterial activity for isolate extract fractions showed thatMA2 of fraction 2 had a strong inhibitive effectagainst E.coli and S. Aureusabout10,15 mm and 9,95 mm consecutively. The antagonistic activity of EH2of fraction 3 against S. aureusandE.coliwere about 7,05 mm and 7,45 mm consecutively, whereas EA1 of fraction 3 was about 6,55 mm againts P. Aeruginosa. The results of phytochemical secondary metabolite of isolate extract fractions showed that MA2 of fraction 2 and MA2 of fraction 3 werepositive for saponin, while EH2 fraction 3 and EA1 fraction 3 were positive for alkaloid. Bacteria associated with sponges Haliclona sp.2 and Axinellidsp. had activity as antibacterial against bacteria S. aureus, E. coli and P. aeruginosa. Copy Right, IJAR, 2016,. All rights reserved. …………………………………………………………………………………………………….... Introduction:- Pathogenic microba has been considered as a crucial problem in human healthy and can cause various diseases. The use of chemical compounds that acts as antibacterial such as unrational antibiotic to treat various diseasescaused by pathogen, could make a negative side effect even it could cause bacteria becomes resistance againts specific Corresponding Author:-Diky Setya Diningrat. Address:-Biology Department, FMIPA, Medan State University. Jl. Willem Iskandar Pasar V, Medan 20221, Indonesia.