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All Journal Jurnal Sumberdaya Akuatik Indopasifik Jambura FIsh Processing Journal
Lukman Mile
Fakultas Kelautan Dan Teknologi Perikanan Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science Industrial & Manufacturing Engineering

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Struktur Komunitas Mangrove di Pesisir Teluk Tomini Kabupaten Boalemo Provinsi Gorontalo Fauzia Zees; Rieny Sulistijowati; Lukman Mile
Jurnal Sumberdaya Akuatik Indopasifik Vol 9 No 4 (2025): November
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2025.Vol.9.No.4.550

Abstract

Mangroves are coastal ecosystems, especially in tropical areas including Tomini Bay, Gorontalo Province. Mangrove ecosystems not only function as coastal abrasion barriers, natural protection from ocean waves, but also as plants that are beneficial to human life, especially for coastal communities. . This study aimed to identify and analyze the structure of mangrove communities on the coast of Tomini Bay, Boalemo Regency, Gorontalo Province. Data collection was carried out using the line transect method at four observation stations for the seedling and sapling categories., then analyzed to determine the absolute density, absolute frequency, and dominance of species. Mangroves found in Tomini Bay, Boalemo Regency from the four stations consist of A. marina, B. gymnorhiza, B. parviflora, C. decandra, C. tagal, R. apiculata, R. mucronata, R. stylosa, S. alba, S. caseolaris, X. moluccensis. In the seedling category, the C. tagal mangrove species at station 2 (Dulangeya Village) showed the highest value in Boalemo Regency, with an absolute density of 56 ind/m², an absolute frequency of 0.48, and a relative dominance of 87.5%. On the other hand, the B. gymnorhiza species recorded the lowest value compared to all observation stations in Boalemo Regency, with an absolute density of only 1 ind/m², an absolute frequency of 0.05, and a relative dominance of 1.56%. The C. tagal mangrove sapling category at station 2 (Dulangeya Village) had the highest absolute density, absolute frequency, and relative dominance in Boalemo Regency, at 8.36 ind/m2 and 0.71 and 73.85, respectively. R. apiculata had the lowest density of all stations in Boalemo Regency, at 0.04 ind/m2 and 0.05 and 0.35, respectively
Analisis Fitokimia Dan Aktivitas Antioksidan Teripang Hitam (Holothuria atra) Dengan Pelarut Berbeda Muhammad Andika; Lukman Mile; Iin Susilawati Lantu
Jambura Fish Processing Journal Vol 8, No 1 (2026): VOLUME 8 NOMOR 1, JANUARY 2026
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jfpj.v8i1.30150

Abstract

This study aims to analyze the secondary metabolites and antioxidant activity present in black sea cucumber (Holothuria atra) found in Lamu Village. The study stages include sample collection, sampel preparation, and extraction through maceration using methanol (p.a), ethyl acetate (p.a), and N-hexane (p.a) solvents at a 1:20 ratio of material to solvent. The test include phytochemical screening and quantitative methods, applying a Completely Randomized Design (CRD) based on different solvents treatments with three levels: M1 (methanol extract), M2 (ethyl acetate extract), and M3 (N-hexane extract). The data were analyzed using Anlysis of Variance (ANOVA) and the Honestly Significant Difference (HSD) test for significant differences between treatments. The results showed extraction yields of 45% for methanol, 27,5% for ethyl acetate, and 32,5% for N-hexane. Phytochemical tests identified flavonoids and alkaloids in the ethyl acetate extract, and alkaloids and phenols in the N-hexane extract. Antioxidant activity results indicated that the methanol extract exhibited very strong activity (29,18 ppm). In comparison, the ethyl acetate and N-hexane extracts showed strong activity with values of 76,67 ppm and 68,81 ppm, respectively.was 1.871905 ppm. Antibacterial tests showed an inhibition zone of approximately 6 mm, indicating moderate antibacterial activity. These results suggest that ethanol extract of A. marina leaves contains triterpenoid compounds with potential as antibacterial agents. This study opens opportunities for further development of A. marina-derived triterpenoids in antimicrobial formulations.
Co-Authors Fauzia Zees Iin Susilawati Lantu Muhammad Andika Rieny Sulistijowati