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All Journal Jurnal Pengajaran MIPA Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam Jurnal Pendidikan Islam Jurnal Pendidikan Kimia Universitas Riau Edumatsains Jurnal Tadris Kimiya INKUIRI : Jurnal Pendidikan IPA Orbital: Jurnal Pendidikan Kimia JISIP: Jurnal Ilmu Sosial dan Pendidikan Eduproxima : Jurnal Ilmiah Pendidikan IPA SPIN: Jurnal Kimia & Pendidikan Kimia Gunung Djati Conference Series UNESA Journal of Chemical Education al Kimiya : Jurnal Ilmu Kimia dan Terapan International Journal of Learning Media on Natural Science ASEAN Journal of Educational Research and Technology
Cucu Zenab Subarkah
UIN Sunan Gunung Djati Bandung
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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The Effect of pH and Temperature on The Stability of Anthocyanins from Black Soybean Skin Extracts Sunarya, Risa Rahmawati; Subarkah, Cucu Zenab; Purliantoro, Dwi; Taskinih, Taskinih; Islamiati, Fitri Nur
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 11, No 1 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i1.35861

Abstract

Anthocyanins are natural dyes of purple and red. Anthocyanin dyes are applied in various industries as a drink or food coloring. As natural dyes, anthocyanins have an important role in human health. This research aimed to analyze the stability of anthocyanins from black soybean skin extract at varying pH and temperature. Anthocyanins from black soybean skins are macerated using two kinds of solvents. The solvents are distilled water + 30% citric acid and 70% ethanol + 1% HCl. Maceration was carried out at a temperature of 4℃. Then the anthocyanin was treated at a temperature range of 40-90℃ and pH of 5-9 and its absorbance was measured using UV-Vis’s spectrometry. The concentration of anthocyanin from black soybean skins is from the solvent distilled water + 30% citric acid of 1.992 mg/L, while from the solvent 70% ethanol + 1% HCl it was 1.936 mg/L. The color stability temperature t of black soybean skin extract was carried out at temperatures of 40°C, 50°C, 60°C, 70°C, 80°C, and 90°C. with respective absorbance of 0.274; 0.247; 0.237; 0.227; and 0.214. The higher the temperature, the anthocyanin content decreases. pH test was carried out at pH 5, 6, 7, 8, and 9 with respective absorbance values of 1.831; 1,759; 1,229; 1,118; and 1,066. The pH test showed that the higher the pH, the anthocyanin content was reduced, while the application of additional anthocyanin to white agar as food coloring showed that the anthocyanin content was only 0.125. It can be concluded that anthocyanins have good stability at low temperatures and acidic pH.
PENGARUH PEMBELAJARAN BERBASIS MULTIPLE REPRESENTATION UNTUK MENINGKATKAN PEMAHAMAN KONSEP KIMIA PADA MATERI LAJU REAKSI Rahmawati, Rika; Subarkah, Cucu Zenab; Sukmawardani, Yulia
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 7, No 3 (2025)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v7i3.7380

Abstract

Kimia dianggap sebagai salah satu mata pelajaran yang sulit oleh siswa karena banyaknya konsep abstrak yang sulit dipahami. Hal ini sering menyebabkan miskonsepsi pada siswa. Penelitian ini bertujuan untuk mengukur tingkat miskonsepsi kimia siswa SMA pada materi laju reaksi serta mengevaluasi efektivitas pendekatan pembelajaran berbasis multiple representation untuk menguranginya. Metode penelitian mencakup studi literatur dan studi pendahuluan dengan menggunakan three-tier diagnostic test. Hasil menunjukkan bahwa tingkat miskonsepsi pada siswa sebesar 41,42%, dengan mayoritas miskonsepsi terjadi pada faktor-faktor yang mempengaruhi laju reaksi (19,52%). Studi literatur mengungkapkan bahwa pendekatan multiple representation mampu mereduksi miskonsepsi dan meningkatkan pemahaman konsep siswa dengan memanfaatkan level representasi makroskopik, submikroskopik, dan simbolik secara simultan. Penelitian ini merekomendasikan pendekatan tersebut sebagai strategi pembelajaran yang efektif dalam pendidikan kimia.
Creation of A Colloid E-Magazine Oriented Towards Chemical Literacy Sari, Sari; Nurhafizah, Nurhafizah; Aisyah, Riri; Zenab Subarkah, Cucu
International Journal of Learning Media on Natural Science (IJLENS) Vol. 1 No. 2 (2024): August
Publisher : CV. Generasi Intelektual Digital (GEN ID)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60005/ijlens.v1i2.86

Abstract

This research aims to describe the appearance, validation test results, and feasibility test results of an e-magazine oriented toward chemical literacy on colloidal materials. This media is expected to enhance students' literacy in colloidal materials. The research method used is Design-Based Research (DBR) with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The study consists of two main stages: the product development stage, which includes analysis and design, and the product testing stage, which includes validation and feasibility tests. The resulting product is an e-magazine designed to promote chemical literacy on colloidal materials. The validation test was conducted by three experts—lecturers and teachers specializing in materials and media. The average r-calculated values for material, language, and media display aspects were 0.93, 0.97, and 0.98, respectively, indicating that the e-magazine is valid. Subsequently, the product underwent a feasibility test with 15 students who had previously studied colloidal materials. The average feasibility test scores for material, language, and media appearance were 93%, 82%, and 95%, respectively. Based on these results, the e-magazine is deemed suitable as a learning medium.
Developing E-module on the Topic of Integrated Addictive Substances with Islamic Values Subarkah, Cucu Zenab; Alhak, Aflah Azifa; Sari, Sari; Ruswandi, Uus; Rochman, Chaerul
Jurnal Tadris Kimiya Vol 6 No 1 (2021)
Publisher : Department of Chemistry Education, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jtk.v6i1.9802

Abstract

E-module is one of the media that is considered efficient to be used as a learning media. This research describes the e-module of addictive substances integrated with Islamic values as a solution in preventing and reducing addictive substance abuse, especially among adolescents, by providing scientific knowledge related to religious knowledge. The study aims to analyze the characteristic of e-module and validation results. The e- module is designed with the Design-Based Research (DBR) method with the three steps: analysis, design, and development. Based on the results, the e-module display Islamic views and their interpretation, animated videos, questions, attitude tests, and games. The validation result indicates that the e-module is valid and feasible to be used as a learning media.
Analysis of Students Misconceptions Using Instruments Three-Tier Diagnostic Test on Acid-Base Material Chimayah, Mihlatal; Windayani, Neneng; Kurniasih, Nunung; Subarkah, Cucu Zenab; Sukmawardani, Yulia
JISIP: Jurnal Ilmu Sosial dan Pendidikan Vol 9, No 1 (2025): JISIP (Jurnal Ilmu Sosial dan Pendidikan) (Januari)
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jisip.v9i1.8215

Abstract

This research aims to analyze students' misconceptions using a three-tier diagnostic test on acid-base material. The type of research used in this research is descriptive research. This research was carried out at SMA Negeri 1 Muaragembong on class XI MIPA students. The data collection technique uses a multilevel multiple choice diagnostic test. The first level contains students' answers, the second level contains the reasons for the answers, and finally the level of belief. Data analysis was carried out by looking for the percentage of misconceptions from each concept in the acid-base material, namely the concept of acid-base theory, pH indicators of acid-base solutions, strength of acids and bases, as well as calculating the pH of acid and base solutions. The results of the research show that students' misconceptions about acid and base material using the three-tier diagnostic test instrument are divided into three, namely M1, M2 and M3. Based on the research results, the largest percentage of misconceptions regarding acid-base material is the misconception M1. Students with misconceptions M1 has a percentage of 30.96%, then the misconception M2 has a percentage of 14.63%, and misconceptions M3 has a percentage of 9.01%. Misconceptions M1 is a condition where students answer questions incorrectly at the first level and second level, but answer confidently at the third level. The causes of misconceptions that occur among students are due to incomplete reasoning, students' abilities, students' interest in learning and teachers' teaching methods.
The Effect of pH and Temperature on The Stability of Anthocyanins from Black Soybean Skin Extracts Sunarya, Risa Rahmawati; Subarkah, Cucu Zenab; Purliantoro, Dwi; Taskinih, Taskinih; Islamiati, Fitri Nur
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 11 No. 1 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i1.35861

Abstract

Anthocyanins are natural dyes of purple and red. Anthocyanin dyes are applied in various industries as a drink or food coloring. As natural dyes, anthocyanins have an important role in human health. This research aimed to analyze the stability of anthocyanins from black soybean skin extract at varying pH and temperature. Anthocyanins from black soybean skins are macerated using two kinds of solvents. The solvents are distilled water + 30% citric acid and 70% ethanol + 1% HCl. Maceration was carried out at a temperature of 4℃. Then the anthocyanin was treated at a temperature range of 40-90℃ and pH of 5-9 and its absorbance was measured using UV-Vis’s spectrometry. The concentration of anthocyanin from black soybean skins is from the solvent distilled water + 30% citric acid of 1.992 mg/L, while from the solvent 70% ethanol + 1% HCl it was 1.936 mg/L. The color stability temperature t of black soybean skin extract was carried out at temperatures of 40°C, 50°C, 60°C, 70°C, 80°C, and 90°C. with respective absorbance of 0.274; 0.247; 0.237; 0.227; and 0.214. The higher the temperature, the anthocyanin content decreases. pH test was carried out at pH 5, 6, 7, 8, and 9 with respective absorbance values of 1.831; 1,759; 1,229; 1,118; and 1,066. The pH test showed that the higher the pH, the anthocyanin content was reduced, while the application of additional anthocyanin to white agar as food coloring showed that the anthocyanin content was only 0.125. It can be concluded that anthocyanins have good stability at low temperatures and acidic pH.
“Chemyzone”: An Innovative E-Magazine for Chemistry and Chemical Literacy Education on Addictive Substances to Support Sustainable Development Goals (SDGs) Completed with Bibliometric Analysis Amanullah, Salma Novianti; Subarkah, Cucu Zenab; Irwansyah, Ferli Septi; Aisyah, Riri
ASEAN Journal of Educational Research and Technology Vol 5, No 3 (2026): (ONLINE FIRST) AJERT: VOLUME 5, ISSUE 3, December 2026
Publisher : Bumi Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Chemical literacy plays a vital role in enabling students to understand chemical concepts and their relevance to everyday life, particularly in addressing social challenges such as substance abuse. In Indonesia, the increasing prevalence of narcotics and psychotropic abuse among adolescents, coupled with limited engaging learning resources and a low national science literacy score, underscores the urgency for innovative educational media. This study introduces Chemyzone, a digital e-magazine designed to enhance chemical literacy on addictive substances. The study focused on the development phase to produce a visually engaging and accessible learning tool. We also added a bibliometric analysis to support this study. The resulting e-magazine integrates knowledge, context, competence, and attitude dimensions of chemical literacy, offering support for classroom instruction while extending its reach to the broader public. The findings suggest that Chemyzone has the potential to raise awareness and improve understanding of addictive substances through technology-based education. This study adds new information regarding sustainable development goals (SDGs).
Ethnochemistry of Kampung Naga: Local Wisdom as Green Chemistry Learning in E-Book Form Natania, Alya; Subarkah, Cucu Zenab; Sundari, Citra Deliana Dewi
Orbital: Jurnal Pendidikan Kimia Vol. 9 No. 2 (2025): Orbital: Jurnal Pendidikan Kimia
Publisher : Chemistry Education Department of Education and Teaching Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ojpk.v9i2.30378

Abstract

This study explores the local wisdom of Kampung Naga as a source of ethnochemistry-based green chemistry learning through an e-book. The research focuses on forest conservation, waste management, natural architecture, water systems, and traditional agricultural and food practices. This study employed a descriptive qualitative approach using an ethnographic method to explore the local wisdom of the Kampung Naga community in relation to ethnochemistry and green chemistry concepts The research target were members of the Kampung Naga community selected through purposive sampling. Data were collected through observation, interviews, questionnaires, and documentation, and analyzed descriptively. The findings show that local wisdom of Kampung Naga encompasses ethnochemical practices that are relevant to chemical concepts. These practices align with the principles of green chemistry, particularly in waste reduction, the use of renewable materials, and energy efficiency. Although challenges remain, such as the open burning of plastic, which poses pollution risks the community's approach to maintaining harmony with nature offers a strong framework for developing chemistry education based on ethnoscience.  
Enhancing Students’ Chemical Representation Ability Through Problem-Based Learning Assisted by Nearpod on Electrolysis Cell Material Nurida Siti Fatimah Zain; Cucu Zenab Subarkah; Yulia Sukmawardani; Sari
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 1 (2025): July
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i1.7066

Abstract

This study aims to show an increase in students’ chemical representation ability through the integration of Problem-Based Learning (PBL) assisted by Nearpod on electrolysis cell material and describe student activities and their ability to complete worksheets. This study used a pre-experimental method with a one group pretest-posttest design and involved second-semester students in the basic Chemistry 2 courses. The results showed that the improvement in chemical representation ability was in the medium category (N-Gain: 0.68), learning activities were carried out very good (88.86%), and the student’s ability to complete worksheets was also classified as high (average score: 89.52). These findings indicate that integrating PBL assisted by Nearpod is an effective, innovative approach to improving students’ chemical representation ability, particularly in abstract electrolysis cell material, by encouraging active participation and conceptual understanding.
Co-Authors Ade Sulaeman Ade Winayah, Ade Aflah Azifa Alhak Agustin, Reza Ajeng Dalli Al Zahro, Rd Indah Rofi'ah Alhak, Aflah Azifa Amanullah, Salma Novianti Anis Kurnia Ilahi Anwar, Dede Miftahul Chaerul Rochman Chimayah, Mihlatal Cindy Phangestu Desi Latipah Fauziah Dwi Purliantoro Erna Dwi Susanti Ida Farida Imelda Helsy Imelda Helsy Islamiati, Fitri Nur Meisani, Riseu Natania, Alya Nunung Kurniasih, Nunung Nurhafizah Nurhafizah Nurida Siti Fatimah Zain Ramlan Burhanudin Ratnasari Ratnasari Rika Rahmawati Riri Aisyah Riri Aisyah, Riri Risa Rahmawati Sunarya Rochman, Chaerul Ruswandi, Uus Saepudin Rahmatullah, Saepudin Salsa Virginia Sari Sari Sari Sari Sari Sari Sari Septi Alawiyah Siti Fatonah Sunarya, Risa Rahmawati Sundari, Citra Deliana Dewi Supyan Sauri Taskinih, Taskinih Teti Fathonah Tri Cahyanto Umar Husaini Windayani, Neneng Yulia Sukmawardani Yulia Sukmawardani, Yulia Yulia Sukmawardini