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All Journal HAYATI Journal of Biosciences Biospecies Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Bioscience Jurnal Biologi Universitas Andalas Jurnal Riset Kimia Jurnal AGROSAINS dan TEKNOLOGI Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis JURNAL AGRONIDA JURNAL KESEHATAN PERINTIS Jurnal Hilirisasi IPTEKS (JHI) Eksakta : Berkala Ilmiah Bidang MIPA Majalah Kedokteran Andalas Jurnal Pembelajaran dan Biologi Nukleus Best Journal (Biology Education, Sains and Technology) BioEksakta : Jurnal Ilmiah Biologi Unsoed Jurnal Zona Bioscientist : Jurnal Ilmiah Biologi Agroradix : Jurnal Ilmu Pertanian Berkala Penelitian Hayati Journal of Pharmaceutical and Sciences. Organisms: Journal of Biosciences Bioeksperimen Biodiversitas Journal of Biological Diversity
Anthoni Agustien
Department Of Biology, Faculty Of Mathematics And Natural Sciences Universitas Andalas
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Earth & Planetary Sciences Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

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Isolation and Antibacterial Activity of Mangrove-Derived Streptomyces from the Mandeh Coast, West Sumatra Fatriza, Ayu Septia; Tjong, Djong Hon; Suliansyah, Irfan; Agustien, Anthoni; Marlina, Marlina; Rusfidra, Rusfidra
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i2.12208

Abstract

Mangrove ecosystems are recognized as potential environments for microorganisms that produce antibiotics, owing to their distinct environmental features and high levels of microbial rivalry. The objective of this research was to extract and assess the antibacterial properties of Streptomyces species sourced from the mangroves within the Mandeh coastal ecosystem in West Sumatra, Indonesia, targeting specific pathogenic bacteria. Sediment samples were collected from three mangrove locations and processed using serial dilution and spread plate methods on International Streptomyces Project 2 (ISP-2) media. Data were analyzed descriptively based on the size of the inhibition zone formed against the tested bacteria. The results showed Streptomyces-like characteristics characterized by colony morphology and Gram staining. Antibacterial activity was evaluated using a disc diffusion test against methicillin-resistant Staphylococcus aureus (MRSA), Escherichia coli ATCC 25922, and Cutibacterium acnes. A total of seventeen isolates exhibiting typical Streptomyces characteristics were obtained. The antibacterial test showed varying inhibitory activity among the isolates against the tested pathogens. The STMMI isolate showed the strongest inhibition against MRSA with an inhibition zone of 23.61 ± 0.62 mm and also showed considerable activity against C. acnes (16.64 ± 1.12 mm). Meanwhile, the STMML isolate showed the highest inhibition against E. coli ATCC 25922 with an inhibition zone of 17.06 ± 0.63 mm. Some isolates showed broad-spectrum antibacterial activity, while others showed selective inhibition against certain pathogens. In conclusion, mangrove sediments from the Mandeh coastal ecosystem harbor a variety of Streptomyces with promising antibacterial potential. This study highlights the importance of Indonesian mangrove ecosystems as a potential reservoir of bioactive microorganisms for future antibiotic discovery.
NGS-Based Metagenomic Approaches for Bacterial Community Analysis: A Review Rifda Hayati; Marlina Marlina; Anthoni Agustien
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12426

Abstract

Microorganisms play a crucial role in biological, ecological, and biogeochemical processes; however, most environmental microorganisms cannot be readily grown under standard laboratory conditions, driving the development of Next-Generation Sequencing (NGS)-based metagenomic approaches that enable culture-independent characterization of microbial communities directly from environmental DNA. This review synthesizes the principles of NGS-based metagenomics, contrasts amplicon and shotgun approaches, compares major sequencing platforms and platform-selection criteria, and evaluates the applications and limitations of bacterial community analysis across the health, agricultural, and food sectors—an integration not commonly addressed together in previous reviews. Based on literature from 2018–2026 in PubMed/MEDLINE, Scopus, Web of Science, and Google Scholar, amplicon and shotgun metagenomics were found to offer complementary taxonomic and functional resolution, while platform choice depends on accuracy, read length, and budget. Across sectors, metagenomics supports pathogen surveillance and gut microbiome profiling in health, soil microbiome-based sustainability indicators in agriculture, and fermentation microorganism and antimicrobial resistance gene detection in food safety. Nevertheless, challenges remain regarding the accuracy of function prediction from amplicon-based data, bioinformatics pipeline standardization, and the validation of predicted microbial functions through complementary multi-omics approaches.
Potensi Antimikroba Ekstrak Infus Daun Pedada (Sonneratia caseolaris L) Mandeh, Sumatera Barat Mifthahul Jannah; Nurlaili Nurlaili; Deasy Ovi Harsachatri; Novia Novia; Julia Veronika Larasati; Alya Rahmaditya Arfan; Yuliandini Pangestika; Alif Rahman Habibi; Anthoni Agustien
Journal of Pharmaceutical and Sciences JPS Volume 9 Nomor 1 (2026)
Publisher : Fakultas Farmasi Universitas Tjut Nyak Dhien

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36490/journal-jps.com.v9i1.1385

Abstract

The increasing emergence of antibiotic-resistant bacteria poses a serious global health threat, highlighting the need for alternative antimicrobial sources derived from natural products. Pedada mangrove (Sonneratia caseolaris L.), widely distributed in the coastal area of Mandeh, West Sumatra, has been traditionally used as a medicinal plant. This study aimed to evaluate the antimicrobial potential of leaf infusion extracts of Sonneratia caseolaris and to determine the effect of heating time variation on antimicrobial activity. Leaf infusion extracts were prepared using boiling water with heating durations of 10, 15, and 30 minutes. Antimicrobial activity was assessed against Escherichia coli, Staphylococcus aureus, and Candida albicans using the disc diffusion method. The results showed that all infusion extracts exhibited antimicrobial activity with varying inhibition levels. The optimal heating time was 10 minutes, resulting in inhibition zone diameters of 10.5 mm against E. coli, 10 mm against S. aureus, and 10 mm against C. albicans. These findings indicate that Sonneratia caseolaris leaf infusion extract has potential as a natural antimicrobial agent, with shorter heating time being more effective in preserving antimicrobial activity.
Co-Authors - Jumawita Aghni Aznia Akmal Djamaan Alif Rahman Habibi Alviche, Lola Alya Rahmaditya Arfan Anggun Sophia Anggun Sophia Anisa Rahman Rusiati Annisa Farma Annisa Khaira Armaleni Armaleni Arthauly Yopita Sinurat Asih, Enda Tarni Ayu Putri Ningsih Ayumi Rizci Puspita Ayumi Rizci Puspita Ayumi Rizci Puspita Chairul Chairul Chairul Chairul Cici Wulandari Deasy Ovi Harsachatri Desma Yuni Deswati Deswati Devi Syafriyani Dianty Putri Dina Wahyuna Djong Hon Tjong Dwitaviani, Rima Efrizal Efrizal Efrizal Efrizal Endang Purwati RN Fadhila Cantika Fatriza, Ayu Septia Ferry Lismanto Syaiful Feskaharny Alamsjah Herwita Idris Hesti Dwi Marcellinna Ikel Fitri Yanis Ilham, Kurniadi Ilsa Septia Putri Irdawati Irdawati Irfan Mustafa Irfan Suliansyah Jetty Nurhajati Julia Veronika Larasati Kurniadi Ilham Kustiasih Lestari Linar Z. Udin Lola Alviche Maliza, Rita Mansyurdin Marlina Marlina Marlina Marlina Melisa Ainil Fajri Mellanie Alia Putri Mellanie Alia Putri Mifthahul Jannah Mifthahul Jannah Mildawati Mildawati Mira Rosnawita Mohammad Abrar Mohsin Rafique Mufidhatul Muqarramah Muhammad Diki Juliandi Nasril Nasir Nasril Nasir Nasril Nasir Nasril Nasir Nasril Nasir Novia Novia Nurhajati, Jetty Nurlaili Nurlaili Nurmiati Nurmiati Nurmiati Nurmiati Nurmiati Nurmiati Nurmiati, N Periadnadi Periadnadi Pingkan Aditiawati PINGKAN ADITIAWATI Puspita, Ayumi Rizci Putri, Silvy Rizka Rahmadani Eka Pitri Rahmayati, Riesca Salsabilah Rahmi Adila Rahmi Inayati Riesca Salsabilah Rahmayati Rifda Hayati Riski Budi Yani RR. Ella Evrita Hestiandari Rusnam Rusnam Shinta, Dewi Yudiana Suwirmen, Suwirmen Syafrita, Assyifa Syamsuardi Syamsuardi Syukria Ikhsan Zam Tesri Maideliza Tri Widia Ningsih Alam Triyatdipa, Haqil Uci Mela Sari Udin, Linar Z. Widia Firliani Wira Hastuti Wiwik Handayani Yetria Rilda Yetti Marlida Yetty Marlida Yorasakhi Ananta Yuliandini Pangestika Yurike Nova Edlin Zakaria, Indra Junadi Zovia, Miftahul Zozy Aneloi Noli Zuhri Syam Zuhri Syam Zuhri Syam