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All Journal JBIO: jurnal biosains (the journal of biosciences) Jurnal Pelita Pendidikan Biosfer: Jurnal Tadris Biologi Biogenesis: Jurnal Ilmiah Biologi Jurnal Biologi dan Pembelajarannya (JBP) JURNAL PENELITIAN SAINTIKA Biology, Medicine, & Natural Product Chemistry JURNAL PENGABDIAN KEPADA MASYARAKAT Al Qodiri : Jurnal Pendidikan, Sosial dan Keagamaan EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA LENSA (Lentera Sains): Jurnal Pendidikan IPA JURNAL PENDIDIKAN MIPA Biopendix: Jurnal Biologi, Pendidikan dan Terapan IJOEP : International Journal of Ecophysiology Didaktik : Jurnal Ilmiah PGSD STKIP Subang Keluwih: Jurnal Kesehatan dan Kedokteran QISTINA: Jurnal Multidisiplin Indonesia Aurelia: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia BIO-CONS: Jurnal Biologi dan Konservasi Jurnal Pengabdian Masyarakat dan Riset Pendidikan Metamorfosa: Journal of Biological Science Open Access DRIVERset
Endang Sulistyarini Gultom
Department Of Biology, Universitas Negeri Medan
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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AKTIVITAS ANTIBAKTERI EKSTRAK DAUN SYZYGIUM POLYANTHUM TERHADAP PSEUDOMONAS AERUGINOSA Odor Debora Pita Uli Sinaga; Greace Enita Purba; Shela Estica Saragi; Tania Valentina Pasribu; Endang Sulistyarini Gultom
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 11 No. 04 (2025): Volume 11 No. 04 Desember 2025 In Process
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v11i04.10723

Abstract

Bay leaf (Syzygium polyanthum) is a tropical plant from the Myrtaceae family widely used in Indonesian traditional medicine. This study aimed to identify secondary metabolite compounds in bay leaf extract through phytochemical screening and evaluate its antibacterial activity against Pseudomonas aeruginosa. Bay leaf extract was prepared using the maceration method with 96% ethanol. Phytochemical screening was conducted to detect alkaloids, phenolics, flavonoids, terpenoids, tannins, and saponins using standard reagents. Antibacterial activity was tested using the agar well diffusion method at concentrations of 20%, 30%, 40%, and 50%, with chloramphenicol (25 mg) as positive control and 96% ethanol as negative control. Results showed that bay leaf extract contained all tested secondary metabolites. The antibacterial activity test demonstrated inhibition zones of 3.25 mm (20%), 4.05 mm (30%), 6.01 mm (40%), and 6.56 mm (50%), indicating weak to moderate activity. Statistical analysis using one-way ANOVA showed significant differences between concentrations (p < 0.05), with higher concentrations producing larger inhibition zones. The positive control showed strong activity (22.31 mm), while the negative control showed no inhibition. This study confirms that bay leaf extract possesses antibacterial potential against Pseudomonas aeruginosa, with activity increasing proportionally to extract concentration, attributed to synergistic effects of multiple bioactive compounds including flavonoids, tannins, terpenoids, and alkaloids.
Co-Authors Adinda Laura Munthe Adinda Rizky Pratiwi Agustina Matontang Ahmad Shafwan S. Pulungan Aida Fitriani Sitompul Albert D Situmorang Alyvia Salsabila Alztara, Salsha Amelia Sasmita Br Sianturi Aryeni Aryeni Astrida Joice Angelica Batubara Atika Khovivah Baringbing, Siska Juliana Bazura, Hughes Br Tarigan, Grace Amelia Dalimunthe, Aina Mardiah Damaiyani, Damaiyani Deka Wira Pratama Barus Denisa, Rifka Dewi Peronika Hutasoit Efimah Sidabutar Eko Prasetya Eko Prasetya, Eko Elisabet, Melfa Romanna Ester Ester Fadilla, Raudatul Fanny Hafifa Fauziah, Ennita Fitri Afifah Nst Ginting, Silvia Margaretta br grasella, martha Greace Enita Purba Gultom, Wirda Resinta Habsari, Lilis Harahap, Armansyah Maulana Hasibuan, Ali Ahmatul Umri Hasnaul Maritsa Hasruddin Helen Veronita Hutapea Hutasoit, Dewi Peronika Jayawarsa, A.A. Ketut Kaban, Hairen Br Lumbantoruan, Lamtiurma Lydia Siburian Manda, Yutha Nadiroh Manullang, Hanna Mawarni Manurung, Dhea Amelia Marbun, Jumita Sari Martina Restuati Mayasari , Ulfayani Mustasfa, Sinta Wulida Mutia, Diska Qolbu Mutiara Sakinah Nafisa, Katri Nainggolan, Tiara Najwa Sarip Nasution, Ayyu Rizkia Nasution, Mhd Yusuf Ndaha, Gebyta Yani Nila Zusmita Wasni Ninta Dumaria Matanari Nur hasanah Nura S, Alfi Nurbaity Situmorang Odor Debora Pita Uli Sinaga Padang, Enmia Septia Pakpahan, Amkani Angelita Pandiangan, Putri Patricia Pasaribu, Maria Benedikta Priawan, Indra Pulungan, Ahmad Shafwan S Purba, Melpa Yusmawati Qisthy Adha Fajriati Rangkuti, Marlinda Nilan Sari Rasyidah Reni Anggraini Rini Hafzari RR. Ella Evrita Hestiandari Salsabilah, Talita Saragih, Elsa Angelina Saragih, Putri Fransiska Sari, Vio Joana Selvia Dewi Pohan Shela Estica Saragi Sihotang, Joseph Raja Oloan Siregar, Sania Situmorang, Albert D Situmorang, Nurbaity Susanto, Rafli Syarief Saadillah Lubis Tamba, Gelora Betania Tania Valentina Pasribu Tarigan, Sisilia Anabina Tri Hartanti Ulfah Rambe, Khadra Uswatun Hasanah Widyanti Saragi Wijaya, Ulfah Rianda wulandari, atika Yenda, Azura Nur Zain, Ulfi Khairani