Claim Missing Document
Check
Articles

Development of the Acid-Base Microblogs Based on Malay Ethnochemistry to Preserve Culture Anggreni, Utin Dian; Hadiarti, Dini; Fadhilah, Raudhatul
Jurnal Penelitian Pendidikan IPA Vol 9 No 8 (2023): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i8.4300

Abstract

Perceiving culture in the globalization era is challenge for the Malay community. The best way to solve it is to integrate ethnochemistry into chemistry learning at the school. The research aims to develop acid-base microblogs based on the ethnochemistry of the Malay community. Three Stages Research and Development (TSRD) model was conducted in this study which consists of 3 steps: planning, development, and dissemination. The subjects of this research were the students of XI MIPA class at SMAN 11 Pontianak, SMA Muhammadiyah 1 Pontianak, and MAN 3 Pontianak. The validity assessment and response sheet were used to collect data in this study. The results of the acid-base microblogs based on the ethnochemistry of Malay culture obtained 0.85 of validity from the expert judgment in the very high category. An excellent response was given by the student to the microblog, with a percentage of 82.28%. Based on the study results, the ethnochemistry microblogs have been declared very valid to arouse preserving culture.
Development of Project Based Learning E-Module on Salt Hydrolysis Material to Improve Student Learning Outcomes Nopita; Fadhilah, Raudhatul; Kurniati, Tuti; Mukhlishin, Hamdil
Jurnal Penelitian Pendidikan IPA Vol 10 No 9 (2024): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i9.8399

Abstract

The conventional printed modules used in schools have not been able to make students active and understand chemical concepts. Therefore, it is necessary to develop an interactive multimedia-based e-module grounded in Project Based Learning (PjBL), equipped with videos, images, and interactions to engage students and facilitate easier comprehension of chemical materials. The iam of this study is to improve the learning outcomes of class XI Science Muhammadiyah 1 High School Pontianak. The method used in this research is development (research and development) employing the ADDIE model, which includes the stages of (analysis, design, development, implementation, and evaluation). The research findings indicate very high criteria with an average validity coefficient of 0.93 for each aspect of media, materials, and language. The practicality analysis, based on the response questionnaires from the small group trial and the main field trial, showed practicality values of 71% and 74%, respectively, both with practical criteria. It can be concluded that the project based learning e-module developed is feasible to be used as an effective and practical learning tool for XI Science students and chemistry teachers in high schools.
Physicochemical Properties of Halal Alternative Gelatin from Parrotfish (Scarus quoyi) Scales Optimized by Response Surface Methodology Yulian, Muammar; Reza, Muhammad; Ramadani, Nofa; Hamama, Rosi; Fadhilah, Raudhatul; Akmal, Yusrizal; Abass, Kasim Sakran; Paujiah, Epa; Hajisamae, Sukree; Zulfahmi, Ilham
Indonesian Journal of Halal Research Vol. 7 No. 2 (2025): August
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ijhar.v7i2.38678

Abstract

The increasing demand for halal-friendly gelatin, combined with concerns over health risks associated with mammalian sources, has created a need for alternative raw materials. Fish scales from local species, such as parrotfish, offer a sustainable and promising option that has yet to be extensively explored. The study aims to investigate the physicochemical properties of gelatin extracted from the scales of the parrotfish (Scarus quoyi) scales. Response Surface Methodology (RSM) was employed to determine the optimal concentration of hydrochloric acid (HCl) and immersion time to maximize yield and quality. Physicochemical properties, including yield, moisture content, ash content, pH, and viscosity, were evaluated, and the structural characteristics of the gelatin were analyzed using Fourier-Transform Infrared Spectroscopy (FTIR). All processing steps were conducted in compliance with Halal Critical Control Points (HCCPs) to ensure the final product remained free from cross-contamination with non-halal substances. Response surface methodology optimization identified 4% HCl concentration and 29.4 hours of immersion as optimal conditions. These conditions produce gelatin with a yield, moisture, ash, pH, and viscosity are 14.5%, 4%, 0.48%, 4.15, and 1.78 cP, respectively. FTIR analysis confirmed that the extracted gelatin exhibited absorption peaks consistent with those of commercial gelatin, indicating a functional group similarity. Compared to gelatin from other fish species, parrotfish gelatin demonstrated a competitive yield and notably low moisture content, thereby enhancing its stability and storage potential. These findings highlight the potential of parrotfish scales as a sustainable source of halal gelatin, contributing to waste reduction and offering a viable alternative to mammalian gelatin.
Enchaning Chemistry Learning with a Local Wisdom-Based E-Encyclopedia for High School Students Zulyanti; Raudhatul Fadhilah; Rismahardian A. Kurniawan
Jurnal Penelitian Pendidikan IPA Vol 11 No 3 (2025): March
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i3.10086

Abstract

This study explores the integration of local cultural knowledge into high school chemistry education through the development of an E-Encyclopedia. Aimed at improving student comprehension of chemical elements, this educational resource contextualizes complex scientific concepts with culturally relevant examples. The E-Encyclopedia was created following the ADDIE model and validated through expert reviews and user feedback. The results showed high validation scores and positive reception from both teachers and students, with usability ratings of 88.09% from educators and 85.93% from learners. These findings suggest that the E-Encyclopedia is an effective tool for making chemistry education more engaging and accessible.
Sintesis dan Karakterisasi Hidrogel Berbasis Selulosa dari Kulit Durian untuk Penjernihan Air Gambut Raudhatul Fadhilah; Doddy Irawan; Tuti Kurniati
Jurnal Penelitian Pendidikan IPA Vol 11 No 8 (2025): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i8.11514

Abstract

Peat water in Indonesia, abundant in swamp regions, is acidic and rich in humic substances and Fe²⁺ ions, making it unsuitable for direct use. This study explores a sustainable approach to treating peat water using hydrogel synthesized from durian rind (Durio zibethinus), an agricultural waste rich in cellulose. Cellulose was extracted via alkali and bleaching treatment, then crosslinked with chitosan in a NaOH/urea solvent system to form a biodegradable, porous hydrogel. The hydrogel exhibited a swelling ratio of 857% and a gel content of 98.23%, indicating high hydrophilicity and network integrity. Adsorption experiments demonstrated removal efficiencies of 98.96% for methylene blue and 25% for Fe²⁺. The high dye removal at low concentrations suggests strong interaction between hydrogel functional groups (–OH, –NH₂) and organic molecules, while Fe²⁺ removal was attributed to electrostatic interaction and potential chelation. Adsorption followed pseudo-second-order kinetics, indicating chemisorption as the rate-limiting step. These results suggest that durian rind hydrogel is a promising low-cost material for organic and inorganic pollutant removal in acidic water systems. This study highlights the potential of agro-waste valorization in developing eco-friendly materials for water purification.
Development of a Practical Tool for Renewable Energy Materials in P5 Activities Based on Secang Extract as a Natural Dye Sensitizer in the DSSC Circuit Ridho Sastriwijaya; Dini Hadiarti; Raudhatul Fadhillah
Jurnal Penelitian Pendidikan IPA Vol 11 No 8 (2025): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i8.12017

Abstract

In this study, a DSSC practice tool based on sappanwood (Caesalpinia sappan L.) extract as a natural dye sensitizer was developed to support renewable energy learning at the senior high school level. This research is categorized as development research, aiming to produce a renewable energy practice tool that is valid and practical. The method used in this study was Research and Development (R&D), adapted from the Thiagarajan 3D model. The results showed that the practice tool based on sappanwood extract as a natural dye sensitizer in the DSSC circuit was declared highly feasible, with an assessment score of 85% from media experts and 86% from material experts.The product trials revealed that the small-group trial achieved a feasibility score of 83%, while the large-group trial reached 86%. Both results were categorized as “highly feasible.” These findings indicate that the DSSC practice tool based on sappanwood extract as a natural dye sensitizer is valid and practical for use in the learning process