@article{Nugraha_Novita_Rajamuddin_Yunita_Enggarini_Reflinur_Maharani_Elya_2019, title={Phytochemical analysis and antibacterial activity of Staurogyne sp. in fish disease bacteria}, volume={2}, url={https://journal.unhas.ac.id/index.php/torani/article/view/7057}, DOI={10.35911/torani.v2i2.7057}, abstractNote={<p class="Abstrak-Isi">This study was aimed to identify the potential use of active compounds extracted from <em>Staurogyne sp</em> as an antibacterial agent to control disease-causing bacteria in fish. <em>Staurogyne sp</em>, an aquatic plant collected from Bantimurung, South Sulawesi were subjected to allelochemical compound. Plant extracts were tested to five bacteria including four types of bacterial pathogen, such as <em>Aeromonas hydrophilla</em>, <em>Edwardsiella ictaluri</em>, <em>Streptococcus agalactiae, </em>and <em>Flavobacterium columnare,</em> and one bacterial sensing quoroum, <em>Chromobacterium violaceum</em>. Based on phytochemical analysis, <em>Staurogyne</em>’s extracts derived from both stem and root contained flavonoids, phenols, and antioxidants compounds with the concentration of 0.018 mgQE/g, 0.3471 mgGAE/g, and  1004,391 IC<sub>50 </sub>µg/mL, respectively. In addition, <em>Staurogyne </em>plant extracts derived from both their stem and root has also produced both saponins and glycosides compounds. Plant extracts derived from <em>Staurogyne</em>’s leaves revealed three major chemical compounds such as flavonoids (0.77 mgQE/g), phenol (0.0629 mgGAE/g), and glycosides (+). However, no antioxidants and saponin compounds were detected.  Applying plant extracts as an antibacterial on five disease-causing bacteria causing diseases in aquaculture, such as <em>Aeromonas Hydrophilla, Edwardsiella ictaluri, Streptococcus agalactiae, Flavobacterium columnare, </em>and <em>Chromobacterium violaceum</em> bacterials revealed that at concentration of 0.1 g the <em>Staurogyne</em> sp extracts did not influence all the bacterials growth. However, by application of plant extract at concentration of 0.2 g on the growth media,three out of 5 tested bacterials (<em>Aeromonas hydrophilla</em>, <em>Edwardsiella ictaluri</em>, and <em>Streptococcus agalactiae</em>) showed intermediate inhibition responses on bacterial growth. The growth of remaining two bacterials pathogen, <em>Flavobacterium columnare</em> and <em>Chromobacterium violaceum </em>at 0.2 g plant extract of <em>Staurogyne</em> sp was not affected. This study revealed that the use of active compound derived from <em>Staurogyne sp</em> would be potential to be used in inhibiting disease-causing bacterial in fish in future. However, optimum concentration of the plant extracts, in particular on the inhibition of the growth of disease-causing bacteria in fish is still needed to adjust.</p>Key words: Antibacterial, aquatic plant, <em>Staurogyne sp</em>, fish disease}, number={2}, journal={Torani Journal of Fisheries and Marine Science}, author={Nugraha, Media Fitri Isma and Novita, Hessy and Rajamuddin, Muh Alias and Yunita, Rossa and Enggarini, Wening and Reflinur, Reflinur and Maharani, Fasya Hadaina and Elya, Berna}, year={2019}, month={Jul.}, pages={77-86} }