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Hydrogen: Jurnal Kependidikan Kimia
Published by Universitas Pendidikan Mandalika
ISSN : 23386487     EISSN : 26563061     DOI : Prefix 10.33394
Core Subject : Science, Education,
Chemistry Education
Hydrogen: The Chemistry Education Journal published by the Chemistry Education Study Program which contains articles raised from the results of conceptual research and studies in chemistry and chemistry education including education and learning, device development, media and learning models.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 642 Documents
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Development of Teaching E-Modules on Atomic Structure Material Based on the Merdeka Curriculum Melviani; Enawaty, Eny; Masriani
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18750

Abstract

The purpose of this study was to develop and test the feasibility of materials and media, as well as to observe teachers' responses to e-learning modules on atomic structure based on the independent curriculum. This study uses the Research and Development method with the ADDIE model, which includes the stages of analysis, design, development, implementation, and evaluation. However, the development process is limited to the development stage with the aim of producing e-learning modules that are theoretically feasible based on expert assessment and user response, without empirically testing the effectiveness of the product. The module that has been developed is tested for feasibility by each of the 2 media experts and material experts to determine whether the module is suitable for use. In addition to the feasibility assessment, a response test to the product was also carried out involving 2 teachers from driving schools in Pontianak city. The results of the analysis in the material test were 88%, the media test was 84%, and the teacher response questionnaire to the teaching module was 96%. So it can be concluded that the teaching e-module on atomic structure material based on the independent curriculum developed is feasible to use as a learning tool because it has passed the feasibility assessment by material and media experts and received a very good response from chemistry learning teachers because it has passed the response test. The uniqueness of this research lies in the development of an e-learning module that systematically maps Learning Outcomes (CP) into Learning Objectives (TP) and Learning Objective Sequences (ATP), and is designed in an interactive digital format to overcome teachers' difficulties in planning lessons under the Merdeka Curriculum. Researchers suggest continuing this research at the next stage, namely implementation and evaluation to see the effectiveness of the teaching modules produced because the teaching modules can also be used by teachers in learning chemistry so as to make it easier for teachers to have teaching module references that are more flexible and can be accessed at any time.
Relationship Between Dug Well Construction and Physical Quality of Clean Water in Kayangan, North Lombok Hatimah, Husnul; Desimal, Iwan; Puspita, Yeni; Zulkarnaen, Muhammad Fauzi
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18763

Abstract

Dug wells serve as the main household water source for communities in the Kayangan Health Center area of North Lombok, making their structural integrity essential for ensuring safe water access. This study aimed to examine the relationship between dug well construction and the physical quality of clean water. An observational analytic study with a cross-sectional design was conducted from April to June 2024. From a total population of 82 dug wells, 45 wells were selected as study samples using the Slovin formula with a 10% margin of error and simple random sampling to ensure equal selection probability. Well construction characteristics were assessed through direct field observation using a structured checklist based on Indonesian Ministry of Health standards. Physical water quality was evaluated through organoleptic testing of color, odor, and taste in accordance with national clean water regulations. The results showed that 88.9% of dug wells did not meet recommended construction requirements, particularly regarding parapet height, well lining, and watertight flooring. Physical testing indicated that 80% of water samples met quality standards, while 20% failed to meet one or more indicators. Statistical analysis using the Chi-Square test revealed no significant association between well construction and physical water quality (p = 0.258). These findings suggest that physical indicators alone may not adequately reflect contamination risks, highlighting the need for comprehensive water quality monitoring that includes microbiological and chemical assessments to ensure groundwater safety.
The Effectiveness of Nutrition Education and Utilization of Local Food Tokens in Reducing the Risk of CED and Anemia in Pregnant Women in Central Lombok Pauzi, Iswari; Ekayani, Ni Putu Karunia; Jiwantoro, Yudha Anggit
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18779

Abstract

This study aimed to evaluate whether nutrition education combined with the use of a local food product, TOKEN (Tongkol–Kentang/Tuna-Potato), could improve maternal nutritional indicators and reduce the risk of chronic energy deficiency (CED) and anemia among pregnant women in Jelantik Village, Central Lombok, Indonesia. A quasi-experimental one-group pretest–posttest design was conducted under the supervision of the local community health center, from April to September. Fifteen pregnant women were recruited through consecutive sampling based on eligibility criteria (willingness to participate, no severe chronic disease affecting dietary intake, and ability to attend sessions). The intervention consisted of (1) nutrition education on CED and anemia prevention, and (2) hands-on training to prepare TOKEN nuggets with standardized hygienic procedures, followed by light mentoring to encourage regular consumption and home practice. Outcomes were measured at baseline and post-intervention, including nutrition knowledge (structured questionnaire), mid-upper arm circumference (MUAC/LILA) (standard MUAC tape), and hemoglobin (Hb) levels (point-of-care testing). Pre–post changes were analyzed using paired t-test or Wilcoxon signed-rank test (p < 0.05). Results showed significant improvements in nutrition knowledge, MUAC (+0.61 cm, p < 0.001), and Hb (+0.92 g/dL, p < 0.001), with fewer women at risk of CED and anemia. Participants also improved TOKEN processing skills, supporting the feasibility of using local food. This approach may be a feasible community-based strategy to reduce CED and anemia risk, though larger studies with control groups are needed.
Molecular Docking and in Silico Pharmacokinetic Analysis of Peronemin As A Potential 17β-Hsd1 Inhibitor For Estrogen-Dependent Cancer Therapy Puspitasari, Ratih Dyah; Tarigan, Indra Lasmana
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18780

Abstract

High levels of estradiol (E2) are important in the development of endometrial cancer. This hormone is mostly produced when the enzyme 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) changes estrone (E1) into estradiol (E2). Inhibiting this enzyme can reduce estrogen production in cancers that rely on estrogen. This study examined three Peronemin derivatives (A2, A3, C1) as potential 17β-HSD1 inhibitors through detailed computer analysis. PASS predictions showed these compounds likely have antineoplastic activity (Pa > 0.85). Their physicochemical properties, based on Lipinski's rule, suggest they have good ADME profiles, with high gastrointestinal absorption and a predicted ability to cross the blood-brain barrier.Molecular docking results showed that all three compounds interacted stably with the 17β-HSD1 active site. Peronemin C1 had the strongest binding (ΔG = -6.56 kcal-mol-¹; Ki = 15.56 μM). Mapping the interactions revealed that A2 formed hydrogen bonds with Tyr155, A3 formed hydrogen bonds with Lys159, and C1 exhibited strong hydrophobic interactions. The results suggest that Peronemin A2, A3, and especially C1 could be promising for further development as 17β-HSD1 inhibitors. However, further laboratory studies are needed to confirm the effectiveness of these compounds and determine their practical application.
Dyeing Cotton and Nylon Fabrics Using Natural Dyes from Hibiscus Rosa Sinensis Leaf Extract Using Infrared Dyeing Technique Karlina, Mia; Abdurrohman
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 1 (2026): February 2026 (In Press)
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i1.18852

Abstract

The use of synthetic dyes in the textile industry continues to increase due to several advantages including a wide color range, high color fastness, ease of application, and relatively low cost. However, the massive use of synthetic dyes produces dye waste that is difficult to degrade naturally, potentially polluting the environment and increasing the burden on wastewater treatment. This study aims to evaluate the potential of Hibiscus rosa-sinensis leaf extract as a source of natural dyes on cotton and nylon fabrics using various types of mordants. Fresh  leaves  were  dried  and  ground  before being extracted using the maceration method with water as the solvent. The resulting extract was then subjected to dyeing processes using infra-red (IR) techniques. Mordanting was carried out with various mordants, namely potassium aluminum sulfate (KAl(SO₄)₂), ferrous sulfate (FeSO₄), potassium dichromate (K₂Cr₂O₇), and copper sulfate (CuSO₄) using a pre-mordanting method. Evaluation of the results was carried out based on colorimetric values ​​(K/S, L*, a*, b*, C*, and h°) and fastness tests to washing and rubbing. The results showed that the use of mordant increased the color intensity of both types of fabrics. The sample processed using mordant showed excellent color fastness to washing and rubbing.
Analysis of Science Teaching Material Development Needs: Teachers' Perceptions of Ethnoscience Integration in Junior High and Senior High School Science Textbooks Yulis, Putriade Rahma; Fauziah, Nurul; Febliza, Asyti
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18895

Abstract

Education today requires the implementation of contextual, responsive, and culturally sensitive approaches to create learning that is relevant to the daily lives of students and more inclusive. To date, research on ethnoscience in science education has primarily focused on the development of learning models, the implementation of ethnoscience in the classroom, or conceptual studies on the integration of culture in science learning. Studies that specifically analyze science textbooks as the primary learning resource are still limited and tend to be descriptive, without directly linking them to teachers' perceptions and the development of teaching materials in specific regional contexts. Therefore, this study is novel in filling this gap through an analysis of the need to develop ethnoscience-based science textbooks based on the perceptions of junior high and high school teachers in Riau Province, which provides an empirical basis for the development of teaching materials and the formulation of more contextually and locally based education policies. This study used a survey method involving 12 junior high school and high school science teachers from 12 different schools in various regions of Riau. The research instrument was a perception questionnaire from the perspective of teachers and students. Data analysis was conducted both descriptively and quantitatively, using simple statistics, and supplemented by qualitative interpretations of open-ended responses. The results showed that both teachers and students considered the integration of ethnoscience in science textbooks to be very limited, unsystematic, and lacking a strong connection between scientific concepts and local culture. The needs analysis indicated the need to develop culture-based textbooks that explicitly include the cultural context of Riau, are scientifically structured, and can strengthen the understanding of science concepts. This study has significant implications for teachers, textbook authors, and also curriculum developers, as it underscores the importance of enhancing the relevance of science learning through integration of local culture.
The Relationship Between Septic Tank Distance And The Biological Quality Of Dug Well Water In Rensing Bat Village, West Sakra District Desimal, Iwan; Indah, Dahlia Rosma; Abqory, M. Hario Tangkas
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18917

Abstract

Based on data from the results of the Household Drinking Water Quality Surveillance of the Rensing Health Center in Rensing Bat Village in 2024, which was carried out from 15 wells, there were 13 wells that contained Eschericia colli bacteria  and 2 wells that did not contain Eschericia colli bacteria. This study aims to determine the relationship between the distance of the septic tank and the biological quality of dug well water in Rensing Village, West Sakra District in 2025. This type of research is an analytical survey with a cross sectional approach. This research was conducted in Rensing Bat Village, West Sakra District. The population in this study is 124 houses that have dug wells and septic tanks with a sample of 55 houses taken using systematic random sampling techniques. Data analysis used univariate and bivariate tests. The results of the statistical test  of the septic tank distance variable  showed a value (p value = 0.027<0.05) with the biological quality of the dug well water. Conclusion: there is a relationship between the distance of the septic tank and the biological quality of dug well water in Rensing Bat Village, West Sakra District in 2025. It is recommended to the head of the Rensing Health Center to assign environmental health workers to intensify counseling activities on the safe distance  of septic tanks to dug wells with a distance of ≥ 10 m and cook water before consumption in order to break the chain of water-transmitted diseases. Proper management of the septic tank distance is essential to prevent negative impacts on water quality and to protect public health and the environment.
Free-Radical Scavenging and In Vitro Anticancer Assay of Indonesian Black Garlic with Different Time Processing Riyadi, Sandra Amalia; Vanawati, Noviana; Farah, Harra Ismi; Hafizah, Aulia UI; Hasanah, Uswatun; Herlina, Eka
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18919

Abstract

The process of producing Black Garlic (BG) in Indonesia has not used a standard method and the right dosage. BG is produced through termal processing, compared with fresh garlic (FG) there are obvious changes in color, taste, and biological activities. BG was produced by different time of heating. Several studies have shown that BG has several pharmacological activities including antioxidants and anticancer. The aim of this research is to determine the optimal produced of BG to assess the potential antioxidant and anticancer activity. FG was heated at high temperature 60-70ºC with 85-95% humidity without any additives for various period of time which is 30, 40, 50, 60 days. Ethanol (EtOH) extract of BG 30; 40; 50 and 60 days and FG as a control were partionate with n-hexane, ethyl acetate (EtOAc), n-buthanol (n-BuOH), and water then evaporated in 40 °C. Each extract of FG and BG were tested Free-radical scavenging and anticancer activity. Free-radical scavenging was determined by 1,1 diphenyl-2-picrylhydrazyl (DPPH) method, and cytotoxicity of crude extract was tested by 3-(4,5-dimethylthiazol-2-yl)—2,5-diphenyltetrazolium bromide (MTT) assay against MCF-7 human breast cancer cell line. The result demonstrated that BG exhibited significantly enhanced radical scavenging activity compared to FG across different aging periods. Notably, EtOAc and n-hexane fractions obtained after 30, 40, and 60 days of thermal aging showed strong antioxidant activity with IC₅₀ values below 50 µg/mL. Importantly, this study demonstrates that a defined thermal aging duration of 30 days, combined with EtOAc fractionation, yields the most potent antioxidant fraction and the lowest IC₅₀ value (47.27 µg/mL) against MCF-7 cells, indicating that thermal aging time is a key determinant governing the antioxidant and anticancer potency of BG. These findings provide novel evidence linking controlled thermal aging parameters to the optimization of BG bioactivity, thereby offering a robust scientific basis for standardized BG processing with enhanced functional and therapeutic potential.
Potent Antioxidant Activity of Renggak (Amomum dealbatum Roxb.) Fruit and Its Antibacterial Effect Against Klebsiella pneumoniae Mustariani, Baiq Ayu Aprilia; Dewi, Yuli Kusuma; Raohani; Sulistiyana
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18926

Abstract

This study investigates the antioxidant and antibacterial activities of ethanolic extracts of renggak fruit (Amomum dealbatum Roxb.), an edible plant traditionally consumed in Lombok, Indonesia. The novelty of this research lies in the evaluation of fruit extracts of A. dealbatum, which have been rarely studied compared to other plant parts, particularly in relation to antioxidant potency and antibacterial activity against Klebsiella pneumoniae, a clinically relevant pathogen associated with severe pneumonia and antibiotic resistance. Extraction was carried out using a maceration method with 96% ethanol under controlled temperature and duration to preserve thermolabile compounds. Phytochemical screening revealed the presence of flavonoids, tannins, and terpenoids. Antioxidant activity was evaluated using the DPPH radical scavenging assay, yielding an IC₅₀ value of 10.33 ppm, indicating very strong antioxidant activity compared to other reported Amomum species. Antibacterial activity was assessed using the agar well diffusion method at extract concentrations of 20–100%, showing moderate inhibitory effects against K. pneumoniae with inhibition zones ranging from 7.34 to 9.48 mm. These findings highlight renggak fruit as a promising natural source of antioxidant and antibacterial agents, supporting their potential application as functional food ingredients or natural therapeutics.
Examining the Role of a Structured Seminar Course in Developing Research Readiness of Pre-Service Physics Teachers Taufik, Muhammad; Hikmawati; Ahmadi; Khery, Yusran
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18989

Abstract

The training of preservice physics teachers to participate in educational research is a long-standing issue in physics teacher education. This investigation seeks to understand the effectiveness of a focused seminar course in facilitating research readiness across time and by performance-based assessment and analysis of a research portfolio. Twenty-six preservice physics education students attended a semester-long seminar course focusing on research problem identification, critical response to SINTA and Scopus indexed journals articles, proposal development, and academic communication. The growth in students’ development was studied using a phase-based analysis between the weekly assessment based on a Research Task Plan (RTM) and qualitative analysis of research portfolios. The answers provide evidence of a continuous development of students’ research competencies with less variation in performance over the course levels. Analysis of the portfolios also suggests a shift away from mostly descriptive engagement with research literature toward more critical and comparative disciplinary analysis. These results indicate that seminars, designed as scaffolded learning environments that are authentic can be pedagogically effective in bridging between coursework taken by undergraduates and research done independently especially in the context of physics teacher preparation.

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