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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. 8 (2025): Special Issue" : 30 Documents clear
Heavy Metal Content of Cadmium in Tilapia from Taliwang Swamp Lake, West Sumbawa Regency Khairuddin, Khairuddin; Yamin, M.; Kusmiyati, Kusmiyati
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.6080

Abstract

Research on the heavy metal Cd in fish is crucial to protect humans as consumers from harmful health impacts. This study aimed to determine the cadmium (Cd) content in tilapia (Oreochromis mossambicus) from Taliwang Swamp Lake (TSL). The specific benefit of this study is to protect consumers who consume fish from Cd contamination. This study was conducted in TSL waters. There are two research stations, one located in the eastern part and the other in the western part of the lake. Data collection was carried out using gill nets. Four tilapia samples were taken at each station. The tilapia samples were then wrapped in plastic bags and stored in sample boxes. The research samples were then analyzed at the West Nusa Tenggara Health, Testing and Calibration Laboratory Center. Data analysis was carried out by taking tilapia muscle tissue and analyzing metal content, especially Cadmium (Cd), using an Atomic Absorption Spectrophotometer. Measurement of heavy metals in tilapia tissue was carried out by adding concentrated HNO3 and HClO4, heated at 60-70ºC for 2-3 hours until the solution became clear. The samples were ready to be measured by AAS using an air-acetylene flame. The conclusion of this study was that the heavy metal content of Cd in tilapia (O. mossambicus) originating from TSL was 0.03 mg/kg (ppm).
The Belanger Tradition of the Sasak People: An Ethnoscientific Study of Cultural, Chemical, and Ecological Dimensions Al Idrus, Syarifah Wahidah; Rahmawati, Rahmawati; Nurhidayatullah, Nurhidayatullah
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.6998

Abstract

The Belanger tradition is an indigenous Sasak hair-cleansing practice that integrates cultural values, ethnochemical knowledge, and environmental sustainability. This study investigates the Belanger tradition, a Sasak hair-cleansing ritual utilizing natural ingredients such as coconut milk, hibiscus leaves, and kaffir lime. Employing a qualitative ethnochemical approach, data were collected through in-depth interviews, participatory observation, and documentation at three sites in Lombok. The findings reveal that Belanger transcends mere physical hair treatment; it embodies a holistic practice of physical and spiritual purification, reinforced by its socio-cultural role in strengthening community bonds and intergenerational knowledge transmission. Scientific analysis demonstrates that the selected ingredients possess bioactive properties with clear ethnochemical rationales. Coconut milk, rich in lauric acid, provides conditioning and antimicrobial benefits. Kaffir lime offers essential oils and flavonoids with antifungal and antioxidant activities, while hibiscus leaves contribute natural saponins for gentle cleansing. The traditional practice of roasting coconut further enhances its adsorptive capacity through mild pyrolysis. Environmentally, the tradition exemplifies a sustainable model, as all materials are biodegradable and locally sourced, in contrast to the persistent chemical waste associated with synthetic shampoos. Thus, this research concludes that Belanger represents a significant convergence of indigenous wisdom and empirical science. It serves not only as a cultural heritage but also as a viable case study for sustainable cosmetic practices and context-based science education, highlighting the relevance of local knowledge in contemporary discourses on health, ecology, and cultural preservation.
Improvement of Resistant Starch Content in Millet (Panicum miliaceum L.) Flour by Fermentation and Heat Moisture Treatment Pratiwi, I Desak Putu Kartika; Nociantri, Komang Ayu
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.7394

Abstract

Resistant starch is considered a valuable prebiotic source, and its content is associated not only with dietary fiber but also closely related to the amylose fraction of starch. Millet is a cereal grain rich in dietary fiber. Compared with staple cereals such as rice, wheat, and corn, millet contains higher levels of dietary fiber and antioxidants. The primary component of millet is starch, which accounts for approximately 70% of the grain, consisting of amylose and amylopectin. The research objective – to determine the best modification method to produce millet flour with the highest RS3 content. This study uses a completely randomized design with five treatment variations, repeated three times, applying different fermentation types followed by High Moisture Treatment (HMT). The analysis included the contents of starch, amylopectin, and resistant starch. The results show that significant differences in resistant starch levels were observed between treatments without HMT and those subjected to HMT. Fermentation followed by HMT effectively enhanced the resistant starch content of millet flour, highlighting the importance of combining biological and physical modifications. Among the treatments, fermentation with Lactobacillus rhamnosus SKG 34 followed by the HMT process was identified as the most effective approach, resulting in the highest resistant starch content of 3.85%. These findings demonstrate the potential of this combined modification strategy for improving the functional properties of millet flour.
Development of a Chemistry Magazine with Content Interpreting GC-MS Spectrum of Renggak Fruit Peel Extract as a Supplementary Resource for Organic Chemistry Lectures Rahmawati, Rahmawati; Al Idrus, Syarifa Wahidah; Masruri, Baiq Laili Nisfi Siami
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.7759

Abstract

Mastering the interpretation of spectra, as Gas Chromatography-Mass Spectrometry (GC-MS) spectra, in organic chemistry lectures for the analysis of natural materials is an important skill that often poses a challenge for students. This is especially true for natural materials in the surrounding environment that may have future potential, such as renggak fruits. This study aims to determine the results of interpreting renggak fruit peel extracts for use as content in a chemistry magazine, the level of validity, and student responses to the chemistry magazine developed as an alternative supplementary reading material. Conducted within the Chemistry Education Study Program at Mataram University, this study utilized the Research and Development (R&D) methodology, following the 4D model framework. The interpretation of the GC-MS spectrum of renggak fruit peel was carried out by matching the spectrum data obtained with the library data. The validity of the magazine was assessed using Aiken's V formula, while the reliability of the assessment was calculated based on the Percentage of Agreement (R) between validators. Student responses to the magazine product were obtained through a practical test. The results of the GC-MS spectrum interpretation of the renggak fruit peel extract showed the presence of the compounds myristic acid, palmitic acid, stearic acid, oleic acid, elaidinsaeure, heptadecene- (8)-carbonic acid-(1), 2-monoolein, 2-monopalmitin, ambretollide, 6-(2,6,6-Trimethyl-1-Cyclohexenyl)-4-Methyl-(E)-4-Hexen-1-ol, and cis-9-Octadecenal. The chemistry magazine product obtained an average Aiken's V validity score of 0.83, which falls into the “Highly Valid” category, with an average validator reliability score of 91%. The results of the chemistry magazine trial among 2021 Chemistry Education students obtained a practicality score of 92%, categorized as “Very Practical” as supplementary reading material. In the future, further exploration is needed regarding the content and design of the magazine to be created.
The Effect of Family Support on the Level of Adherence to Medication Among Pulmonary Tuberculosis Patients at the Tenggarong District Health Center Apriani, Diana Kurnia; Al-Mubarak, Agustiqori; Pratama, M. Yudha
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.8086

Abstract

Tuberculosis (TB) remains one of the leading causes of death worldwide, and the success of its treatment largely depends on patient adherence to medication. Since non-adherence is still common, this study aims to analyze the influence of family support on medication adherence among pulmonary TB patients at the Tenggarong District Health Center, Indonesia. The research employed a quantitative method with a cross-sectional design and a prospective approach, involving 60 patients with pulmonary TB selected through convenience sampling. The research instruments included a demographic questionnaire, a family support questionnaire, and the Morisky Medication Adherence Scale-8 (MMAS-8) to assess patient adherence levels. The results showed that most respondents received good family support (95%) and had a high level of adherence (86.67%). The chi-square test indicated a significant relationship between family support and medication adherence (p = 0.000), while multivariate analysis using Principal Component Analysis (PCA) also confirmed a positive correlation between the two variables.
Development of the Ethnochemistry Magazine Using Traditional Gold Mining Culture and Gold Crafts Loka, I Nyoman; Siahaan, Jeckson; Muntari, Muntari; Sofia, Baiq Fara Dwirani; Al Idrus, Syarifa Wahidah; Aeni, Baiq Royatul
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.8848

Abstract

Research and development were conducted with the aim of describing the chemistry concepts contained in the traditional gold mining culture in Prabu village, Middle Lombok and gold crafts in Sekarbela, Mataram. This research is a qualitative descriptive study with a survey approach, conducted in collaboration with 4D Research and Development. The data in this study were collected using the triangulation method, which included interviews, observations, and literature studies. The data analysis technique employed the Miles and Huberman method, which involved data reduction, data presentation, and drawing conclusions. The results of the study indicate that in the traditional gold mining culture in Prabu Village, Middle Lombok, and the gold craft cultural activities in Sekarbela Mataram, there are chemical concepts, including elemental chemistry, reaction equations, oxidation-reduction reactions, the application of the solubility product of salts to separate chemical components from their mixtures, the concept of acids and bases, and the concept of colloids. Teaching materials in the form of ethnochemistry magazines from research and development have a feasibility category that is very feasible, based on the magazine's size, cover design, and content design, with an average V coefficient of 0.94. The feasibility of ethnochemistry magazines, based on the material component indicator, with sub-indicators of material suitability and stimulating curiosity, as well as the feasibility of presentation, with sub-indicators of presentation techniques and presentation support, and the linguistic component indicator, is classified as very feasible, with an average V coefficient of 0.93. In general, ethnochemistry magazines from research and development are classified as very feasible, with an average V coefficient of all aspects of 0.935.
The Substitution of Wheat Flour with Moringa Leaf Flour in Making Brownies with High Iron Content Nango, Maria Saltiana Bebhe; Putra, Anak Agung Ngurah Dwi Ariesta Wijaya; Sintyadewi, Putu Rima; Rabani RS, I Gusti Agung Yogi; Widnyani, Ida Ayu Putu Ary
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.10170

Abstract

Brownies are a popular bakery product, but their nutritional profile is generally low, especially in iron content. This condition contrasts with the high prevalence of anemia among adolescent girls in Indonesia. This study aims to investigate the effect of substituting wheat flour with moringa leaf flour (Moringa oleifera) as an alternative natural fortification to increase iron levels in brownies, while also determining the optimal formulation. The method used was an experiment with a Completely Randomized Design (CRD), and data were analyzed using Analysis of Variance (ANOVA) followed by Duncan's test. The results showed that the addition of moringa leaf flour had a significant effect on increasing iron levels, as well as affecting other chemical characteristics (water, ash, protein, fat, and carbohydrate content). The best formulation was the T5K5 treatment (75% substitution of moringa leaf flour), which produced the highest iron content of 1376.58 ppm, along with a measurable macro composition (water content: 12.26%, ash: 0.94%, protein: 7.39%, fat: 20.83%, carbohydrate: 57.16%). Fundamentally, these findings imply the success of natural food fortification using local raw materials. These results are relevant for the development of functional food products as an acceptable food-based nutritional intervention strategy in addressing anemia in adolescents, as well as providing an important contribution to health education and nutritional literacy.
Analysis of the Relationship between Learning Motivation and Students Cognitive Involvement in Problem-Based Learning through Lesson Study on the Material of Speed and Average Rate Anggrini, Rindy Puspita; Andini, Lusia; Yahya, Gita Salsabilla Nurma; Lestari, Neneng; Susanti, Nova
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.10498

Abstract

Education in the 21st century emphasizes active student engagement, where intrinsic motivation is expected to emerge as observable cognitive participation, particularly through verbal discussions. However, although Lesson Study (LS) and Problem-Based Learning (PBL) are widely reported to strengthen intrinsic motivation, high motivation does not always translate into high verbal cognitive engagement, indicating a potential mismatch influenced by non-cognitive factors. This study aims to analyze the effectiveness of Lesson Study (LS) and Problem-Based Learning (PBL) in fostering students' intrinsic motivation and identify non-cognitive factors that influence the mismatch between motivation and verbal cognitive engagement. This descriptive study used mixed methods, involving 25 students of the Physics Education Study Program. Data were collected through motivation questionnaires (quantitative) and transcripts of group discussion recordings (qualitative) during the implementation of Lesson Study and PBL and processed using descriptive statistics. The quantitative results showed that students' learning motivation was in the high category across all indicators, including persistence, interest, achievement, and independence. However, the qualitative results of the transcripts of verbal cognitive engagement revealed significant variation, where some students exhibited low verbal activity despite having high motivation levels. This inconsistency suggests that high intrinsic motivation has not yet fully translated into active cognitive engagement due to the intervention of affective, social, and situational factors. Thus, Lesson Study and PBL have proven effective in fostering intrinsic motivation, but strengthening collaborative strategies is necessary to ensure optimal cognitive engagement for each individual.
Identification of Escherichia coli in Well Water in Gelogor Utara Hamlet, Kediri District, West Lombok Regency Fatmalia, Enida; Wahyudin, Wahyudin
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.10506

Abstract

Water is a very important need for human life. Wells are one of the primary means of obtaining clean water. Along with the rapid growth of settlements, water quality has decreased due to pollution. The presence of E. coli bacteria in well water indicates human and animal fecal contamination. The purpose of this study was to determine the content of E. coli in well water in Gelogor Utara Hamlet, Kediri District, West Lombok Regency. This type of research is quantitative and descriptive, involving laboratory testing. The test method used to determine the number of E. coli in the sample is the Most Probable Number (MPN) Method listed in SNI 01-2332.1-2006. The results of E. coli testing in the well were all positive samples with E. coli content >24.000 CFU/100mL and in sample 2, namely 2.400 CFU/100mL, based on Permenkes Nomor 2 Tahun 2023, namely 0 CFU/100mL, so that the drilled well water in Gelogor Utara Hamlet does not meet the requirements of the Environmental Health Quality Standards for water for Hygiene and Sanitation purposes. Based on these results, the researcher provides advice to society on maintaining the septic tank to prevent seepage in the well, disinfecting it by adding chlorine, and boiling the water before consumption. The expected impact of this research on the community is to provide information to the community regarding the E. coli content in the well water they use and to raise public awareness about the importance of managing well water used for daily needs.
Tanaka and Cycling Test of Water Pumpkin Fruit Extract (Lagenaria siceraria (Molina) Standl.) as Natural Hair Tonic Spray Sofya, Sri Winarni; Muhsin, Lalu Busyairi
Jurnal Pijar Mipa Vol. 20 No. 8 (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.v20i8.10541

Abstract

Hair loss and slow hair growth remain common cosmetic concerns, while prolonged use of synthetic hair growth agents may pose safety and sustainability issues. This study aimed to investigate the effectiveness and stability of a natural hair tonic spray formulated from water pumpkin (Lagenaria siceraria (Molina) Standl.) fruit extract. The extract was prepared using ethanol maceration and incorporated into three formulations with concentrations of 5%, 10%, and 15%. Effectiveness was assessed through a Tanaka hair growth test on rabbits for 21 days, while stability was evaluated through a 28-day cycling test, involving alternating temperature cycles (2–8°C, 25°C, and 40°C). The results indicated that all formulations exhibited stable organoleptic characteristics, pH, and homogeneity throughout storage. The F3 formula (15%) demonstrated the highest hair growth activity (2.4 cm average length), comparable to the positive control (2.7 cm). The enhanced hair growth effect is attributed to flavonoids and saponins that improve microcirculation around follicles and stimulate keratinocyte proliferation. This research highlights the potential of water pumpkin fruit extract as a sustainable and cost-effective natural alternative to synthetic hair growth agents. Future studies should explore optimization of formulation stability and molecular mechanisms underlying follicular activation.

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