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All Journal Didaktik : Jurnal Ilmiah PGSD STKIP Subang
Helen Veronita Hutapea
Universitas Negeri Medan
Education

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UJI AKTIVITAS ANTIBAKTERI EKSTRAK DAUN SIRIH HIJAU (Piper betle L.) TERHADAP BAKTERI Pseudomonas aeruginosa Efimah Sidabutar; Helen Veronita Hutapea; Ninta Dumaria Matanari; Astrida Joice Angelica Batubara; Endang Sulistyarini Gultom
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 11 No. 04 (2025): Volume 10 No. 04 Desember 2025 In Progress
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v11i04.9945

Abstract

The escalating crisis of antibiotic resistance necessitates the exploration of novel antibacterial agents from natural sources. Green betel leaf (Piper betle L.) is a traditional medicinal plant empirically known for its antiseptic properties. This study aimed to scientifically evaluate the antibacterial activity of its ethanol extract against the opportunistic pathogen Pseudomonas aeruginosa. Extraction was performed via maceration with 96% ethanol, followed by phytochemical screening and antibacterial testing using the disc diffusion method at concentrations of 15%, 20%, and 25% (w/v). Chloramphenicol and 96% ethanol served as positive and negative controls, respectively. Phytochemical analysis confirmed the presence of phenolics, tannins, alkaloids, and terpenoids. The extract exhibited antibacterial activity against P. aeruginosa, with inhibition zones of 3.32 mm, 2.58 mm, and 3.59 mm for the 15%, 20%, and 25% concentrations, respectively, categorizing all as "moderate" activity. While significantly lower than the positive control (22.37 mm), this activity confirms the extract's potential. The highest activity at the 25% concentration suggests a dose-dependent relationship. These findings support the traditional use of betel leaf and provide a scientific basis for its development as a complementary natural antibacterial agent against resilient pathogens like P. aeruginosa.
TREN DAN ARAH PENDIDIKAN PERUBAHAN IKLIM DAN PEMBELAJARAN IPA: TINJAUAN LITERATUR SISTEMATIS Juwita Cristina Situmeang; Helen Veronita Hutapea; Imelda Situmorang
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 02 (2026): Volume 12 No. 2, Juni 2026 Publish
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i01.12354

Abstract

ABSTRACT This study aims to analyze research trends and directions in climate change education within science learning through a Systematic Literature Review (SLR) approach. Climate change has become a critical global issue that requires not only technological solutions but also educational interventions to improve students’ scientific literacy and environmental awareness. This study adopted the PRISMA 2020 framework, consisting of identification, screening, eligibility, and inclusion stages. A total of 500 articles were initially identified from Google Scholar and ResearchGate using Publish or Perish, with keywords “Climate Change Education” and “Science Learning” (2015–2025). After a rigorous selection process, 12 articles met the inclusion criteria, and 6 articles were analyzed in depth. The data were analyzed using bibliometric analysis with VOSviewer, synthesis matrix, and Critical Journal Review (CJR). The findings indicate that research trends are dominated by themes such as climate education and student engagement, scientific literacy and sustainability, inquiry-based learning, family involvement, and climate impact studies. Furthermore, the results reveal that integrating climate change topics into science learning enhances students’ critical thinking skills, environmental awareness, and engagement in real-world problem solving. However, research gaps remain, particularly in the integration of climate change education into formal curricula, experimental studies, and research in developing countries. This study provides important insights for educators, researchers, and policymakers in developing more effective and contextual science learning related to climate change.
Co-Authors Astrida Joice Angelica Batubara Efimah Sidabutar Endang Sulistyarini Gultom Imelda Situmorang Juwita Cristina Situmeang Ninta Dumaria Matanari