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Saprizal Hadisaputra
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Jurnal Pijar MIPA
Published by Universitas Mataram
ISSN : 19071744     EISSN : 24601500     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
Jurnal Pijar MIPA (e-ISSN: 2460-1500 & p-ISSN: 1907-1744) is an open-access scientific periodical journal published by the Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA publishes original articles on current issues and trends in mathematics-science-science education studies. In addition, this journal addresses issues concerning environmental education and environmental science. The journal scopes are: a. Physics and Physics Education b. Chemistry and Chemistry Education c. Biology and Biology Education d. Natural Science and Science Education e. Mathematics and Mathematics Education f. Environmental and Environmental Education
Arjuna Subject : Umum - Umum
Articles 30 Documents
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Search results for , issue "Vol. 20 No. 4 (2025): Special Issue" : 30 Documents clear
Identification of Ethnoscience in Peringgesela Weaving as a Learning Resource for Environmental Chemistry Al Idrus, Syarifa Wahidah; Rahmawati, Rahmawati; Sapitri, Riska Dia
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.6226

Abstract

In the context of environmental chemistry learning, ethnoscience can be used to connect scientific concepts with cultural values. This learning helps students understand the importance of environmental conservation through a relevant and contextual approach. This study aims to identify the ethnoscience of Peringgesela weaving as a learning resource for Environmental Chemistry. The subjects of this study were Peringgesela weaving craftsmen. The research methods were observation, interview and documentation. The results showed that natural dyes such as tarum, mengkudu, and turmeric contain active compounds that represent chemical concepts such as redox reactions, acid-base, and extraction. In addition, the fixation process using synthetic fixation materials such as alum with the molecular formula KAl(SO4)2, lime Ca(OH)2 and tunjung (FeSO4) with waste that is directly disposed of in the surrounding waters. The absence of waste management shows the basic principles of environmental chemistry. The integration of ethnoscience in learning resources for Environmental Chemistry allows students to understand science concepts more contextually, relevantly, and deeply.
Analysis of Mercury Heavy Metal Content in Climbing perch fish (Anabas testudineus) from Rawa Taliwang Lake Khairuddin, Khairuddin; Yamin, M.; Kusmiyati, Kusmiyati
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.7054

Abstract

The heavy metal mercury is at risk of disrupting brain development in children if it accumulates in the human body. The aim of the study was to determine the content of heavy metal mercury (Hg) in Climbing perch fish (Anabas testudineus) originating from Rawa Taliwang Lake to enrich the Ecotoxicology course material. The special benefit is to protect consumers who consume fish from heavy metal contaminants. The research was conducted in Rawa Taliwang Lake, which is in an area submerged in water. There are 2 research stations, namely in the eastern and western parts of the lake. Gill nets were used to catch fish. Fish samples were taken 3 to 4 times at each station. The Fish species taken was the Climbing perch fish (A. testudineus). Furthermore, each fish sample was put into a plastic bag and then stored in a sample box. The research sample was then analyzed at the Environmental Laboratory Center for the West Nusa Tenggara Environment and Forestry Office. The method of data analysis was carried out by taking muscle tissue from fish and then analyzing the content of heavy metals in the form of Hg using an Atomic Absorption Spectrophotometer (AAS). The wet destruction stage in the destruction sample is the process of degradation of organic material samples by utilizing strong acidic liquids, namely HNO3, as a destructive agent. The data obtained are in the form of Pb heavy metal levels in ppm (parts per million). The next stage is that the Pb concentration obtained is processed descriptively and then displayed in table form according to the AAS results. The conclusion of this study is that the heavy metal content of Hg in Climbing perch fish (A. testudineus) originating from Rawa Taliwang Lake to enrich Ecotoxicology course material was <0,0001 ppm.
Rethinking Reactivity: How Structure, Energy, and Entropy Drive Chemical Transformations Alzeer, Jawad
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.8795

Abstract

This work introduces a new way to understand chemical and biological reactivity by connecting molecular structure directly to potential energy and entropy. Moving beyond traditional views, where potential energy is merely “stored energy” and entropy a measure of “disorder”, this structural-thermodynamic framework defines both properties through the lens of constitution, configuration, and conformation. By analyzing diverse mechanisms, including nucleophilic substitutions, eliminations, and cycloadditions, the study shows how structure drives energy storage and release, as well as entropic expansion. The framework highlights how organization increases potential energy while dissociation and flexibility enhance entropy. This structural view not only clarifies the thermodynamic basis of reaction pathways but also offers a predictive model for molecular design in drug development, catalysis, and computational chemistry. By linking structure to thermodynamic behavior, the approach helps students and researchers move from memorization to mechanistic reasoning, providing a unified tool to interpret and anticipate chemical transformations.
Molecular Docking and Pharmacoinformatics Study of Bioactive Compounds in Sweet Flag (Acorus calamus L.) as Antidiabetic Agents Targeting α-Glucosidase Nasution, Rani Sakila; Dewata, Indang; Yuhelman, Nofri; Sandrawati, Neny; Kusnanda, Arif Juliari
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.8994

Abstract

Diabetes mellitus (DM) is a chronic metabolic disorder whose prevalence continues to rise, necessitating safer and more effective therapeutic alternatives. This study aims to explore the potential of active compounds from the calamus plant (Acorus calamus L.) as candidates for α-glucosidase enzyme inhibitors using an in silico approach. Pharmacokinetic screening, toxicity prediction, and Lipinski's Rule of Five screening were conducted to assess the pharmacological suitability of the compounds, followed by molecular docking using MOE 2022 software. The results of the study showed that several compounds from the jeringau plant (Acorus calamus L.), such as galgravin and veraguensin, have strong binding affinity to the α-glucosidase enzyme with docking scores of −8.40 kcal/mol and −8.37 kcal/mol, respectively. Pharmacokinetic prediction results indicate that the test compounds have good absorption and meet druglikeness criteria. This study suggests that active compounds from jeringau have potential for development as natural-based antidiabetic agents. However, this research is limited to computational analysis without experimental data support, and compound selection is based on GC-MS results without further isolation or characterization. Further studies through in vitro and in vivo testing, as well as molecular dynamics simulations and ADMET predictions, are required to validate these findings comprehensively.
Antibacterial Potential of Single Black Garlic Extract Organosulfur Compounds on Staphylococcus aureus Bacteria Destiana, Rindy Tya; Herdyastuti, Nuniek; Setyarini, Wahyu; Arizandy, Radita Yuniar
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.9002

Abstract

Single black garlic (SBG) is a product of processing garlic (Allium sativum L.) by heating it for several days. SBG has antibacterial activity due to the presence of organosulfur, phenolic and flavonoid compounds. This research aims to determine the antibacterial potential of SBG extract on Staphylococcus aureus and determine its chemical compound content based on Liquid Chromatography-Mass Spectrometer (LC-MS) analysis. The extract was obtained from the maceration method combined with a magnetic stirrer using 0, 30, 60 and 90% ethanol solvent. The antibacterial test used the disc diffusion method with a positive control of ciprofloxacin and a negative control of distilled water. LC-MS analysis of SBG extract with the best antibacterial activity. The results of the antibacterial activity test showed that the SBG extract had antibacterial activity based on the presence of an inhibition zone. The largest zone of inhibition in the 90% ethanol solvent SBG extract was 27.71 mm, and the positive control was 22.58 mm. The SBG extract with the most optimal antibacterial activity was analyzed using LC-MS to produce 109 compounds which were divided into 15 different compound groups, some of which were allicin (5.900%) which was the compound with the most composition and innulotetraose (0.065%) which was the compound with the smallest composition in the SBG extract. Data from the antibacterial test results were processed using the IBM statistical program SPSS 25, a One-way ANOVA test, which aims to determine the effect of antibacterial activity on Staphylococcus aureus bacteria, and data on the chemical compound content of the SBG extract were analyzed descriptively. SBG extract has the potential as an antibacterial which is classified as very strong in-vitro, so further in-vivo research is needed to apply the extract as an economical product that can treat skin infections and there are several compounds that dominate SBG extract with the highest antibacterial activity, such as organosulfur compounds, amino acids, flavonoids and phenolics based on LC-MS analysis.
Analysis of Seawater Quality in the Villa Ombak Gili Terawangan Area, Pemenang District Nurhidayah, Nurhidayah; Sholehah, Hijriati; Nurhidayatullah, Nurhidayatullah; Mulhidin, Mulhidin; Azwaruddin, Azwaruddin
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.9023

Abstract

Tourism is one of the most rapidly growing sectors globally and plays a vital role in regional development by contributing to foreign exchange earnings, job creation, and poverty alleviation. Gili Trawangan, a small island in West Lombok, is a popular marine tourism destination experiencing rapid growth in tourist visits and supporting infrastructure, such as hotels and restaurants. This growth has led to increased population density and higher environmental pressures, particularly in the form of liquid waste and pollutants entering coastal waters. If not properly managed, these pollutants can degrade water quality and marine ecosystems. This study aims to assess the quality of seawater in the Villa Ombak area of Gili Trawangan, located in Pemenang District. A quantitative research method was applied, with seawater samples collected from six stations using the Niskin bottle method at a depth of one meter. Parameters analyzed included physical (temperature, total suspended solids/TSS), chemical (pH, salinity, dissolved oxygen/DO, ammonia-N/NH₃-N, nitrate-N/NO₃-N, phosphate/PO₄, oil and fat), and biological (total and faecal coliform) characteristics. Laboratory analysis was conducted at the Mataram PUPR Laboratory, and results were compared to the Indonesian Government Regulation (PP) No. 22 of 2021 on seawater quality standards. The findings showed that all measured parameters met the required quality standards for marine tourism and biota. Recorded values included a temperature of 29°C, TSS 2.5 mg/L, pH 8.2, salinity 33 PSU, DO 6.9 mg/L, NH₃-N 0.019 mg/L, NO₃-N 0.0017 mg/L, oil and fat <0.03 mg/L, total coliform 185 MPN/100 mL, and faecal coliform 0 MPN/100 mL. Although still within safe limits, ongoing monitoring and environmental management are essential to prevent ecological degradation and to ensure the sustainability of marine tourism in the area.
Effectiveness of Desmanthus virgatus Leaf Ethyl Acetate Extract and Antiviral Drugs as Antirabies Based on In Silico Study Hendrawan, Syahrul; Ambarwati, Cindy; Tukiran, Tukiran
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.9024

Abstract

Rabies is a deadly viral disease that has no effective therapy after clinical symptoms appear. This study aims to evaluate the antirabies potential of the dominant compounds in the ethyl acetate extract of Desmanthus virgatus leaves, as well as several antiviral drugs, through an in silico approach. The extract was obtained through maceration and partitioning methods using ethyl acetate solvent, then analyzed using LC-MS, which identified 182 secondary metabolite compounds, and ten dominant compounds were selected for further analysis. These compounds, along with seven antiviral drugs, were docked against the rabies virus glycoprotein (PDB ID: 6LGX) using AutoDockTools 4.2.6 software. The docking results were analyzed based on the values of binding affinity, inhibition constant (Ki), and interaction with active amino acid residues.  Quercitrin and quercimeritrin were the dominant flavonoid glycosides in the ethyl acetate extract of D. virgatus leaves that showed binding affinity values of -8.45 kcal/mol and -8.10 kcal/mol, respectively. In addition, bictegravir and tegobuvir showed binding affinity values of -9.17 kcal/mol and -9.05 kcal/mol, respectively. Four compounds indicated potential as antirabies drugs. Pharmacokinetic feasibility tests using Lipinski parameters showed that most of the dominant compounds violated one or more parameters, especially the number of hydrogen bond donors/acceptors and molecular weight. However, such violations were also found in some antiviral drugs that have been used, such as remdesivir and darunavir. These results suggest that D. virgatus leaf extracts contain compounds with promising potential antirabies activity and deserve further investigation through in vitro and in vivo tests.
Integrated Cooperative Learning Model of Local Wisdom Values on Mastery of Science Concepts Ripo, Delsi; Latjompoh, Masra; Odja, Abdul Haris; Uloli, Ritin; Payu, Citron S.; Hermanto, I Made
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.9026

Abstract

Learning models are guidelines for educators in planning classroom learning, starting from preparing tools, media and learning instruments, to assessment tools that lead to efforts to achieve learning objectives. This study aims to test the effect of implementing integrated cooperative learning media with local wisdom values on the mastery of science concepts at SMPN 2 Telaga Biru. The research design used is a One-Shot Case Study Design, and this study uses two classes as samples. The data analysis techniques used are the normality test and the hypothesis test. Cognitive learning outcomes through hypothesis testing criteria, where the experimental class has a t-count value of 11.19, and the replication class has a t-count value of 15.36. While the t-table value in the experimental class and replication class is 2.07. From the results of data testing, the t-count value ≥ t-table with a level of ∝ = 0.05 for the two classes, it can be concluded that H0 is rejected and H1 is accepted.   The results of the study showed a significant increase in concept mastery after the implementation of the cooperative learning model. The implementation of the cooperative learning model can change the pattern of student interaction for the better because it contains steps and designs. Data analysis showed that the average posttest score was higher than the KKTP score. This study concludes that the implementation of the cooperative learning model can be an effective alternative to improve mastery of science concepts.
Analysis of BOD, COD and TSS Levels in Domestic Liquid Waste (Greywater) in Households in Bada Village, Dompu Regency Melinda, Tina; Majdi, Muhamad
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.9028

Abstract

Water is a very important part of life because it is used in various daily activities such as drinking, bathing, and washing. In addition, water is also used in other activities such as agriculture, animal husbandry and industry. The cause of water pollution can be caused by waste from domestic (household), industry, agriculture and others. The purpose of this study was to determine the levels of BOD, COD and TSS in Domestic Liquid Waste (Greywater) in Households in Bada Village, Dompu Regency. This study is a Qualitative Descriptive Research with sampling using the Purposive Sampling method. Sampling was carried out at the household waste outlet, with a total of 3 samples. The results of the study showed that domestic liquid waste (Greywater) has a BOD content ranging from 120.9 mg/L to 180.30 mg/L, COD content of 310.50 mg/L to 356.89 mg/L and TSS content of 98 mg/L to 115 mg/L. Based on the results of the study, the levels of BOD, COD and TSS in Domestic Waste (Greywater) in Bada Dompu Village exceed the threshold value permitted based on the Regulation of the Minister of Forestry Number 68 of 2016 concerning domestic wastewater quality standards. It is hoped that the community can process domestic liquid waste (Greywater) first before it enters the environment.
Analysis of the Biological Quality of Clean Water in the Male Dormitory Yuliansari, Dini; Fatmalia, Enida; Wahyudin, Wahyudin
Jurnal Pijar Mipa Vol. 20 No. 4 (2025): Special Issue
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i4.9034

Abstract

The use of unclean water is one of the causes of skin diseases. Skin diseases are often suffered by students in the Islamic boarding school environment because sanitation facilities may be inadequate. It is known that the water source in the Islamic boarding school uses drilled well water. The purpose of this study was to determine the quality of clean water in the male dormitory of the Abu Hurairah Mataram Islamic boarding school, which was reviewed biologically. This type of research is descriptive qualitative. The population in this study were all the water taps in the male dormitory of the Abu Hurairah Mataram Islamic boarding school. Based on the results of biological quality tests, including Coliform tests and Eschericia coli tests on water, it is known that the coliform test results obtained in sample A were 18 MPN / 100ml, sample B was 46 MPN / 100ml, sample C was 230 MPN / 100ml, and sample D was 0 MPN / 100ml and the results of Eschericia coli in sample A were 24000 MPN / 100ml, sample B was 24000 MPN / 100ml, sample C was 0 MPN / 100ml, and sample D was 0 MPN / 100ml. The water used by students still cannot be said to be suitable for use because of the presence of Escherichia coli and Coliform bacteria that can cause disease in humans. There needs to be treatment to reduce the bacterial content in sanitation facilities in Islamic boarding schools.

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