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EduChemia: Jurnal Kimia dan Pendidikan
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 25024778     EISSN : 25024787     DOI : http://dx.doi.org/10.30870/educhemia.v6i2.10412
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology
Focus and Scope Educhemia (Jurnal Kimia dan Pendidikan) is Periodicals published the results of research related to the development of science and technology in the field of Chemistry and Chemistry education as a form of intellectual property Chemistry: Organic chemistry, Inorganic chemistry, Biochemistry, Physical chemistry, Analytical Chemistry, Environmental Chemistry, Material chemistry, Ethnochemistry. Chemistry education: chemistry learning design and model, chemical education curricula, Technology innovation and media/multimedia in chemistry learning, development of evaluation tools, lesson study and classroom action research
Arjuna Subject : Kimia(semua kategori) - Kimia Organik
Articles 207 Documents
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Back Matter Vol 8 No 1 (Author Guidelines, Acknowledgment) Langitasari, Indah
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 1 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i1.28543

Abstract

Volatile Compounds and Potential Biological Activities of Essential Oil of Citrus amblycarpa Hassk. Ochse Rasmawan, Rahmat; Marwoto, Putut; Nugroho, Sunyoto Eko
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 1 (2024)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.22973

Abstract

The utilization of volatile compounds from essential oils, one of which is citrus peels, in the food, industry, and medical fields continues to develop. This study aimed to identify volatile compounds present in the essential oils of sambal orange peels (Citrus amblycarpa Hassk. Ochse) and its potential biological activity. The research method begins with the isolation of volatile compounds via steam distillation techniques, followed by identification via gas chromatography–mass spectrometry (GC‒MS) and literature analysis related to the biological activity of the constituent compound components. The results obtained from this study revealed the dominant volatile compounds in essential oils from sambal orange peels, namely, D-limonene (37.41%), β-pinene (22.52%), germacrene D (13.21%) and α-pinene (10.79%). On the basis of the essential oil's most significant compound components, these compounds have potential as antioxidants, antibacterial agents, anti-inflammatory agents, anticancer agents, and antifungal agents. Overall, the results of this study are expected to provide direction for further research, especially for testing the biological activity of the essential oil of sambal orange peel (Citrus amblycarpa Hassk. Ochse) experimentally.
Comparison of Extraction Variations on Mitragynine Level of Three Variants of Kratom Leaves (Mitragyna speciosa Korth) Mutiara, Syrifah Nur Intan; Masriani, Masriani; Muharini, Rini; Sapar, Ajuk; Rasmawan, Rahmat
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 1 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i1.21184

Abstract

Kratom leaves are known as traditional medicine with various benefits, such as antibacterial, antimicrobial, and antioxidant properties. These benefits are attributed to the presence of secondary metabolites, particularly mitragynine. Mitragynine can be obtained through extraction methods. However, to date, no research has compared the efficiency of sonication, reflux, and soxhletation extraction methods on three variants of kratom leaves for obtaining mitragynine. This study aimed to compare the effectiveness of the extraction methods by extracting 15 grams of three variants of kratom leaves using the sonication, reflux, and soxhlet methods. Each extract obtained was quantitatively analyzed using a UV- Vis spectrophotometer to determine the amount of alkaloid and HPLC to determine the amount of mitragynine. The results indicate that the most efficient method for obtaining total alkaloid from the green variant (19.125 mg/g) is through sonication and reflux, the red variant (31,625 mg/g) and the white variant (26,125 mg/g) are through sonication. The most efficient method for obtaining mitragynine from green (22.21 mg/g) is sonication, from red (29.15 mg/g) is reflux, and from white (24.62 mg/g) is soxhletation. Overall, these data show that different extraction methods produce different levels of mitragynine in each kratom variant.
Extraction of Chlorophyll from Pandan Wangi Leaves (Pandanus amaryllifolius Roxb.) as Natural Textile Dyes Berghuis, Nila Tanyela; Isnaeni, Lania Ameswari; Shaleha, Karisma Nur; Kusumaningrum, Aninda Tri; Maryana, Erma; Kurniawati, Fitri
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.24963

Abstract

This research focuses on the utilization of natural materials such as textile dyes, which are environmentally friendly and safe for the health of living things. The natural ingredients used are pandan wangi leaves (Pandanus amaryllifolius Roxb.), especially chlorophyll compounds, which are green pigments. The types of fabrics tested consisted of cotton fabrics, linen fabrics, and drill fabrics. The purpose of this study was to extract chlorophyll from pandan wangi leaves via the maceration extraction method with ethanol and maceration for 36 hours. The particle size of the pandan wangi leaves was made up to 60 mesh to obtain the optimum extraction yield. Fabric coloring begins by washing the fabric with Turkish Red Oil (TRO) solution and then mordanting it with various concentrations of 1% and 0.6% alum mordant. Fabrics that have been dyed are then tested for color fastness to sunlight and rubbing. The results of maceration of the ethanol extract produced a yield value of 40.22%. The chlorophyll a and b contents were calculated from the absorbance values obtained via ultraviolet‒visible (UV‒Vis) spectroscopy, namely, 3.7223 µg/mL and 1.1362 µg/mL, respectively. Fourier transform infrared (FTIR) characterization revealed the presence of methyl, ketone, amine, and ester functional groups. The values of the test results for color fastness to sunlight and rubbing were 4 (good) and 4‒5 (very good), respectively.
Front Matter Vol 9 No 1 (Cover, Editorial Board, Preface, Table of Contents) Langitasari, Indah
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 1 (2024)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.28496

Abstract

Green Synthesis of Dehydrozingerone (DHZ) Utilizing Ionic Liquid Medium and Microwave Irradiation Pertiwi, Annisa Mustika; Wahyuningrum, Deana
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 1 (2024)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.24414

Abstract

Dehydrozingerone (DHZ), 4-(4-hydroxy-3-methoxyphenyl)-3-buten-2-one, a natural compound found in the rhizome of ginger plants (Zingiber officinale), exhibits a wide range of bioactivities, including antioxidant, anticancer, antimalarial, antidepressant, antifungal, and many other bioactivities. Conventionally, DHZ is synthesized through a cross-aldol Claisen-Schmidt condensation of vanillin and acetone, but this process often requires extended reaction times (up to 48 hours), results in low yields, and involves the excess use of organic solvents for purification. To address these limitations, this study aims to develop a green synthesis method for DHZ utilizing a 1-decyl-3-methylimidazolium bromide ([DMIM]Br) ionic liquid medium and microwave-assisted organic synthesis (MAOS) method. The experimental procedure involved optimizing the reaction conditions and varying the concentration of [DMIM]Br under microwave irradiation. Product characterization was performed by melting point determination, thin-layer chromatography (TLC), Fourier transform infrared (FTIR), and nuclear magnetic resonance (NMR) 1H (500 MHz, CDCl3) and 13C (125 MHz, CDCl3) spectroscopy. These findings indicate that the use of the [DMIM]Br ionic liquid significantly improved the purity and yield of DHZ products. The optimal conditions were synthesis from vanillin and acetone in a 1:10 molar ratio, 2.5 M NaOH, and 5% [DMIM]Br (w/v) using MAOS for 120 minutes (50°C, 300 W) to produce a 62.96% yield product in the form of a bright yellow solid with a melting point range of 129–130°C. The use of ionic liquids and MAOS provides a more efficient and environmentally friendly method for synthesizing DHZ, offering a significant reduction in reaction time and eliminating excess organic solvents, thus making it a promising alternative to traditional synthesis methods.
The Effect of Buzz Group Based Blended Learning to Improve Students Cognitive Learning Outcomes on Thermochemical Materials Hidayah, Chaerul; Rahmawan, Setia
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.19430

Abstract

Thermochemistry is considered difficult because students are required to be able to apply mathematical equations in a calculation. Coupled with the use of the lecture method, this makes students less active and bored with learning, so the learning outcomes are low. Therefore, appropriate teaching strategies are needed so that learning becomes effective, namely using a buzz group based on blended learning where there is collaboration and discussion between students with the integration of digital technology. This study aimed to determine the effect of buzz groups based on blended learning to improve students' cognitive learning outcomes in thermochemical material. This research is experimental research, with a quasi-experimental design in the form of a pretest-posttest control group. The research was conducted at MA Minhajut Tholabah, Purbalingga. The sampling technique chosen was saturation sampling, with a sample of class XI MIA 1 as the experimental class and class XI MIA 2 as the control class. The research instrument uses test questions and questionnaires. The function of this instrument is to compare the result of learning between the experimental and control classes. The data analysis technique used for testing the hypothesis is the Mann-Whitney test, and the questionnaire uses percentages. Based on the results of the Mann-Whitney test, the significance value was 0.03 <0.05, which means that H0 is rejected. The average of the student response questionnaire was 77%. This result can be categorized as interesting. It was concluded that there was an influence of the blended learning-based buzz group method to improve students' cognitive learning outcomes in thermochemical material, and the results of the response questionnaire indicated that students were interested in using this method.
Analysis of Platinum Group Metal (PGM) Topic in Inorganic Chemistry Course in Indonesia Langitasari, Indah; Mudzakir, Ahmad; Sunyono, Sunyono; Nugraha, Asep Wahyu
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.28141

Abstract

Platinum Group Metals (PGM) is one of the topics in elemental chemistry in higher education that is important to teach, considering its major role in various industries. PGM is important in various industrial applications, especially as a catalyst in the automotive, electronics, and environmental technology sectors. This study aims to analyze the topic of Platinum Group Metals (PGM) in elemental chemistry teaching in chemistry education study programs in Indonesia with a focus on its relevance, depth, and pedagogical approach. This study is a qualitative descriptive study with a document analysis approach. Data were collected through analysis of Semester Learning Plan documents for inorganic chemistry courses that contain elemental chemistry topics from several universities in Indonesia. Data were analyzed through the following stages: coding, content analysis, and descriptive qualitative. The study's findings indicate that the discussion of PGM on elemental chemistry is still limited and is taught together with other transition elements. The depth of the material also does not reflect the relevance of PGM in industry, modern technology, and sustainable use. This study recommends increasing elemental chemistry learning by teaching PGM topics in more depth as a provision for students to face challenges in the chemical industry. Interdisciplinary teaching approaches and case studies are also needed to strengthen conceptual understanding and student engagement.
Development of E-Modules of Reaction Rate Problem-Based Learning Model to Improve Students’ Critical Thinking Skills and Wasaka Character Rusmansyah, Rusmansyah; Kusasi, Muhammad; Sapnah, Sapnah; Bakti, Iriani; Astuti, Resti Tri
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.27504

Abstract

This study aims to improve critical thinking skills and Wasaka characteristics through the development of a problem-based learning-based reaction rate e-module and to assess the validity, practicality, and effectiveness of the e-module. This research uses the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). In the analysis stage, researchers assess the needs of teaching materials, characteristics of students, and learning objectives. The design stage includes material collection, outline preparation, and e-module prototype design. At the development stage, the author conducted e-module development and validation with expert validators. In the implementation stage, the learning application using the e-module was carried out in class XI B SMA Negeri 10 Banjarmasin with as many as 34 students, which involved practicality and effectiveness tests. At this stage, students learn via e-modules that are accessed via their respective cellphones. The evaluation stage is carried out with 2 types, namely, summative evaluation through pretest and posttest and formative evaluation, by evaluating each stage by revising the e-module. The results showed that the e-module was very valid (score of 4.85), very practical (score of 92.75), and effective in improving critical thinking skills (N-Gain of 0.78) and Wasaka characteristics (N-Gain of 0.72). The indicators used in the critical thinking ability variable are the FRISCO (focus, reason, inference, situation, clarity and overview). In addition, the Wasaka character indicators used are responsibility, hard work and resilience. The results of this analysis indicate that the e-module is very valid, very practical, and very effective in applying the reaction rate material to improve critical thinking skills and Wasaka characteristics.
Alcohol-Diluted Deep Eutactic Solvent as the Electrolyte Kurniawan, Rizmahardian Ashari; Mukhlishin, Hamdil; Indriani, Laila
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.27945

Abstract

Deep eutectic solvents (DESs) are promising alternatives to traditional electrolytes in electrochemical devices because of their favorable properties, including low volatility, biodegradability, and ease of preparation. This study aimed to optimize a DES composed of choline chloride and urea by investigating the effects of molar ratios and short-chain alcohol additions on viscosity, ionic conductivity, and electrochemical stability. The DES was prepared at 80°C at four molar ratios of choline chloride to urea (1:1, 1:2, 1:3, and 1:4), with a 1:2 ratio optimal for achieving a stable, homogeneous solution. Short-chain alcohols (methanol, ethanol, 1-propanol, and 1-butanol) were added to reduce viscosity and enhance conductivity. The addition of methanol and ethanol effectively lowered the viscosity and increased the ionic conductivity because of their ability to integrate into the DES matrix and disrupt hydrogen bonding. Electrochemical analysis confirmed that the oxidative stability of DESs remained unaffected by these alcohol additions, with oxidation onset consistently at approximately 1 V. These findings demonstrate that methanol and ethanol are suitable additives for improving the performance of DESs as electrolytes in electrochemical applications, enhancing both their conductivity and stability.

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