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All Journal JURNAL PESISIR DAN LAUT TROPIS JURNAL ILMIAH PLATAX
Angkouw, Esther
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Earth & Planetary Sciences Environmental Science

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Uji aktivitas antibakteri spons Plakortis sp. yang dikoleksi dari perairan Bunaken Pasodung, Aditya; Losung, Fitje; Angkouw, Esther; Lintang, Rosita; Mantiri, Desy; Sumilat, Deiske
JURNAL PESISIR DAN LAUT TROPIS Vol 6, No 1 (2018): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.6.1.2018.20192

Abstract

Spons merupakan hewan yang termasuk dalam filum Porifera dan salah satu hewan yang hidup pada ekosistem terumbu karang. Biota laut ini diketahui sebagai sumber senyawa-senyawa yang berpotensi dalam bidang farmasetika, diantaranya sebagai antibakteri. Sampel spons Plakortis sp. yang diperoleh dari perairan Pulau Bunaken diambil ekstrak kasarnya melalui proses evaporasi lalu difraksinasi dengan teknik reversed phase kromatografi kolom, menggunakan kombinasi pelarut dH2O: metanol menjadi 6 fraksi. aktivitas antibakteri dari sampel spons Plakortis sp. terhadap E. coli dan S. aureus dianalisis dengan metode difusi agar. Hasil akhir dari penelitian ini yaitu fraksi 1,2,3,4, dan 6 memiliki aktivitas antibakteri terhadap E. coli dan S. aureus dan fraksi 5 tidak memiliki aktivitas. Dua fraksi diantaranya memiliki aktivitas tertinggi dengan diameter rata-rata zona hambat yaitu fraksi 1 dengan diameter zona hambat (16,6 mm), fraksi 2 diameter zona hambat (17,3 mm) terhadap S. aureus, dan untuk E. coli diameter zona hambat fraksi 1 yaitu (17,6 mm) dan fraksi 2 (16,6 mm). Hasil penelitian menunjukkan bahwa senyawa bioaktivitas fraksi ODS spons Plakortis sp. memiliki potensi untuk dikembangkan sebagai obat antibakteri.
Analysis Of Particle Content In Kappaphyccus alvarezii Seaweed In The Waters Of Arakan Village Using Scan Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM-EDX) Tilaar, Sandra; Wullur, Stenly; Angkouw, Esther
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.51565

Abstract

Kappaphycus alvarezii seaweed is widely cultivated in Indonesia and has important economic value. Nevertheless, this seaweed is easily attacked by diseases. This study was to determine the ice-ice triggers in seaweed farming locations. This research study was conducted at Arakan Village, South Minahasa, North Sulawesi. We performed the bacteria isolation on the infected thallus of Kappaphycus alvarezii and found Staphylococcus arlettae caused the infection. Staphylococcus aureus used to be found on the skin and mucous membranes of healthy humans, while  Staphylococcus epidermis inhabits only the skin of healthy humans. Approximately 30% of the normal healthy population was affected by Staphylococcus aureus as it asymptomatically colonizes human hosts. How this Staphylococcus arlettae (mainly found in pork farms) infected Kappaphycus alvarezii which is in a high salinity environment requires an in-depth study. We completed the experiment by using Scan Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM-EDX), analysis on infected thallus Kappaphycus alvarezii, and a series of bacteria isolation to observe the morphology and the element contents of Staphylococcus arlettae bacteria has successfully attached to the surface of Kappaphycus alvarezii and caused an infection.  This proves that environmental changes have stimulated pathogenic bacteria Staphylococcus arlettae in the area where Kappaphycus alvarezii is cultivated. The mechanism of biosorption by microbes that can live in environments that are contaminated with Pb metal is active uptake. This mechanism occurs simultaneously in line with the consumption of metal ions for the growth of microorganisms. Staphylococcus arlettae are resistant to heavy metals due to the ability to detoxify the influence of heavy metals in the presence of protein or granular material. From the results of the study using SEM-EDX of algae and bacteria Staphylococcus arlettae, it can be concluded that the content of the particle of metal in thallus triggers bacteria to live on the seaweed as an energy source. Keywords: Bacteria, disease, infection, Kappaphycus alvarezii, seaweed, Staphylococcus arlettae
Co-Authors Deiske Adeliene Sumilat, Deiske Adeliene Fitje Losung Lintang, Rosita AJ Mantiri, Desy M. H Pasodung, Aditya Sandra Tilaar Stenly Wullur