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p-Index From 2021 - 2026
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All Journal Biology, Medicine, & Natural Product Chemistry Jurnal Eduscience (JES)
Eni Mayasari
Tanjungpura University
Biochemistry, Genetics & Molecular Biology Education Medicine & Pharmacology Public Health Other

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Phytochemical Screening and Antioxidant Activity of Dyera polyphylla (Miq) Steenis Extract Using the DPPH Method Putri Dharma Monika; Rini Muharini; Eni Mayasari
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.1069-1076

Abstract

This research aimed to determine the chemical profile and antioxidant activity of the jelutung rawa plant (Dyera polyphylla). Phytochemical screening tests were conducted using specific reagents, thin-layer chromatography (TLC), and high-performance liquid chromatography (HPLC). Determination of antioxidant activity was performed the DPPH method. The research results showed the presence of secondary metabolite compounds, namely alkaloids, flavonoids, phenolics, tannins, and terpenoids in the leaves, while the contain alkaloids, phenolics, tannins, and terpenoids. The antioxidant activity in this plant has been identified as a strong natural antioxidant.
DEVELOPING WORDWALL-BASED FORMATIVE ASSESSMENT FOR THE PERIODIC TABLE OF ELEMENTS Aisyah Ilmiati; Hairida Hairida; Eni Mayasari
JURNAL EDUSCIENCE Vol 13, No 3 (2026): Jurnal Eduscience (JES), (Authors from Malaysia, Saudi Arabia, and Indonesia)
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jes.v13i3.8280

Abstract

Purpose – This study examines the validity of a Wordwall-based formative assessment on the periodic table of elements and evaluates the perspectives of teachers and students at a public high school in Tebas, Indonesia.Methodology – This study used a research and development (R&D) approach, focusing exclusively on the ADDIE model's development phase. Data were obtained through Likert-scale questionnaires completed by expert validators, teachers, and students. Pearson’s correlation (SPSS) was used to assess item validity, and descriptive statistics (means and percentages) were used to describe questionnaire responses.Findings – The study found that Wordwall-based formative assessments of the periodic table have high validity, confirmed by expert content validation (98.80%), media validation (98.86%), and practitioner validation (87.50%). Teacher and student feedback categories were both rated as “very interesting” (96.88% and 95.51%, respectively). Of 30 items tested, 15 were valid according to Pearson’s correlation in SPSS.Contribution – This study offers practical implications by equipping teachers with strategies for creating interactive, efficient, digitally based formative assessments that deliver rapid feedback, ultimately enhancing student engagement and learning effectiveness in high school science classes. Theoretically, this study advances understanding of how technology integration in formative assessment contributes to improved learning outcomes and enriches the quality of educational processes, providing a replicable model for similar educational contexts.
Co-Authors Aisyah Ilmiati Hairida Hairida Putri Dharma Monika Rini Muharini