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Jurnal Penelitian Pendidikan IPA (JPPIPA)
Published by Universitas Mataram
ISSN : 24602582     EISSN : 2407795X     DOI : -
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics
Science Educational Research Journal is international open access, published by Science Master Program of Science Education Graduate Program University of Mataram, contains scientific articles both in the form of research results and literature review that includes science, technology and teaching in the field of science. The Science Educational Research Journal is published twice in a year in January and July editions. The editors receive writing in Indonesian or English, either from the university or from outside the university.
Arjuna Subject : -
Articles 6,214 Documents
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Structural Break Analysis and Price Transmission of Bulk Cooking Oil in the Indonesian Palm Oil Agribusiness System Jihan Zhafira; ⁠Dedi Budiman Haki; Faroby Falatehan
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13719

Abstract

Volatility in Indonesia’s bulk cooking oil market has increased since the COVID-19 pandemic, disrupting household consumption and threatening national food security. This study analyzes structural breaks in the price dynamics of Fresh Fruit Bunches (FFB), Crude Palm Oil (CPO), and bulk cooking oil, as well as asymmetric price transmission before and after key government interventions. Weekly data from 2020–2024 were examined using the Additive Outlier test, the NARDL model, the Hatemi-J asymmetric causality test, and the Wald test. The results reveal a significant structural break in April 2022, associated with the CPO export ban, DMO/DPO policies, and the implementation of a retail price ceiling (HET). Before the break, short-run price transmission was asymmetric but became symmetric in the long run. After the intervention, short-run transmission was symmetric, while long-run asymmetry persisted, indicating downward price rigidity and reduced market efficiency. These findings suggest that government intervention effectively stabilized short-term prices but created long-term structural distortions. Strengthening distribution efficiency, improving price transparency, and adopting more adaptive policies are essential to enhance market efficiency and economic food resilience.
Scanning Electron Microscopy of Goniodes dissimilis Denny, 1842 (Insecta: Phthiraptera) from Domestic Chickens on Seram Island Maria Nindatu; Rony Marsyal Kunda; Mery Pattipeilohy; Yofian Anaktototy; Ventia Cika Tanikwele; Adriana Hakapaa
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13722

Abstract

Goniodes dissimilis (Denny, 1842) is one of the chewing lice (Ischnocera: Phthiraptera) that commonly infests native chickens (Gallus gallus domesticus). The aims of this study were to describe the morphological and ultrastructural characteristics of G. dissimilis using scanning electron microscopy (SEM). The sampling of Goniodes dissimilis was conducted in Seruawan, Hatusua, and Kamarian villages on Seram Island. SEM preparation was carried out through 2.5% glutaraldehyde fixation, 0.25 M phosphate buffer post-fixation, multistage dehydration, critical-point drying, mounting on stubs, and gold coating before being observed at various magnifications. SEM results showed that G. dissimilis from Seram Island has ultrastructural characteristics, such as the head is circumfasciate with a rounded anterior margin, a complete band on the marginal carina, a pulvinus surrounding the ventral carina, and no hyaline margin. The eyes appear reduced with long ocular setae, while the temporal region has five marginal setae, with setae numbered 2 and 3 presents. The antennae are sexually dimorphic, consisting of a scape, pedicle, and three flagellomeres. In this study, we collected only females of G. dissimilis, and the first flagellomer shows no radial grooves in the sensilla placodea. The thorax shows a pteronotum with several long spines, while the abdomen shows medially separated tergums II–VIII, spiracles on tergums III and VIII, and a thin, membranous sternal plate. The SEM results also show that the female G. dissimilis has terminalia displaying a dorsal plate connected with tergopleurites and a vulva lined with fine setae. This finding represents the first ultrastructural record of the G. dissimilis population on Seram Island, thereby enriching the morphological diversity and distribution data of chewing lice in the Maluku region.
A Systematic Review of Bioactive Metabolites and Antioxidant Potential of Sawo Duren (Chrysophyllum spp.): Integrating Evidence from Metabolomic and Chemometric Studies Fadillah Maryam Bau Agiel; Any Guntarti; Warsi Warsi; Abdul Halim Umar
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13731

Abstract

Chrysophyllum spp. contains diverse bioactive metabolites, including polyphenols, flavonoids, and triterpenes such as lupeol, which contribute to their antioxidant, antiparasitic, and cytotoxic activities. However, most existing studies rely on basic phytochemical analyses and have not incorporated metabolomic or chemometric approaches capable of providing comprehensive metabolite profiling. This systematic review synthesizes current evidence on the bioactive metabolites and antioxidant potential of Chrysophyllum spp. and evaluates the extent to which advanced analytical techniques have been applied. The included studies report high levels of polyphenols and triterpenes, with notable antioxidant effects mediated through enhanced SOD, CAT, and GPx activities and reduced oxidative stress. Polyphenolic compounds also exhibit cytotoxicity via ROS induction in cancer cells, while lupeol and its derivatives demonstrate promising antiparasitic activity. Despite these findings, the lack of high-resolution metabolomics and chemometric integration limits the identification of key metabolites and mechanistic understanding. Overall, Chrysophyllum spp. represent a potential natural source of biologically active metabolites, particularly antioxidants. Future research using advanced metabolomic and the chemometric methodologies is essential to achieve comprehensive metabolite mapping and clarify the mechanisms underlying their bioactivities.  
Mekanisme Molekuler Efek Hipolipidemik Senyawa Bioaktif dari Ekstrak Kulit Buah Alpukat (Persea americana Mill.) : Sebuah Kajian Literatur Suwahyuni Mus; Nanik Sulistyani; Sapto Yuliani
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13733

Abstract

Avocado peel (Persea americana L.) contains a number of bioactive compounds that have the potential to act as antihyperlipidemic agents. These compounds include polyphenols, flavonoids, triterpenoids, phytosterols, and phenolic acids, which are known to affect lipid metabolism through various molecular pathways. This review aims to identify the molecular mechanisms underlying the antihyperlipidemic effects of avocado peel extract. Relevant literature was obtained through searches in the PubMed, Scopus, and Web of Science databases using relevant keywords. Selected studies were analyzed based on the PICO (Population, Intervention, Comparison, Outcome) framework and summarized using the PRISMA methodology. The results of the review indicate that avocado peel extract has the potential to activate the AMPK pathway, regulate PPAR-α/γ, inhibit HMG-CoA reductase, and increase bile acid excretion. However, most of the evidence is limited to animal models and in vitro studies, and further research in humans is needed to confirm the efficacy and to elucidate more in-depth molecular mechanisms.
In Vitro Test of Fraction N-Hexan, Aquadest and Crude Ethanol Extract of Moringa Leaves (Moringa oleifera L.) by Cholesterol Lowering Using a UV-Vis Spectrophotometer Yusnita Usman; Muthmainna B
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13752

Abstract

This research is an experimental research study on in vitro test that uses sampling test from herbal medicine. The purpose of this study is to determine the anticholesterol activity and EC50 value of n-hexan farction, aquadest fraction and ethanol extract of moringa leaves. Moringa leaves (Moringa oleifera L.) contain secondary metabolite compounds that can lower blood cholesterol levels. The analysis method uses UV-Vis spectrophotometry at a wavelength of 665 nm with a series of test sample concentrations of 100 ppm; 300 ppm; and 500 ppm. Research data shows a decrease in cholesterol levels is directly proportional to the increase in concentration in the sample. The EC50 value of n-hexane partition was 142.57 ppm, aquadest partition was 737.88 ppm, and ethanol extract was 156,7 ppm. This indicates that the lower polarity of the solvent used in the extraction process, better than the anticholesterol activity of the extract. Conclusion, the best anticholesterol activity was found in the n-hexane fraction with an EC50 value of 142.57 ppm.
Negotiating Taboo, Culture, and Science: Culturally Responsive Science Learning for Reproductive Health Literacy of Elementary School Teacher Candidates in Papua Aisyah Ali; Singgih Bektiarso; Auldry Fransje Walukow; Erlia Narulita; Akhmad Kadir
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13760

Abstract

Reproductive health literacy in Papua still faces various socio-cultural challenges, such as body taboos, customary norms, and religious values ​​that limit open discussion about reproduction. These conditions also impact prospective elementary school teacher students who will later serve as health educators for children. This study will investigate how prospective teacher students negotiate taboos, culture, and scientific knowledge in culturally responsive science learning to develop reproductive health literacy. The study used a narrative inquiry approach involving five of 28 fifth-semester students in the Elementary School Teacher Education (PGSD) Study Program in Papua. Data were collected through in-depth narrative interviews, weekly reflective journals, and participant observation, then analyzed using Clandinin's three-dimensional narrative framework (temporality, sociality, and place). The results of the study indicate a process of transformation from taboo body language to meaningful scientific language, negotiation between indigenous knowledge, religion, and science, the formation of the class as a safe space for dialogue, and the development of students' professional identities as prospective health educators. These findings confirm that culturally responsive science learning not only enhances cognitive understanding but also plays a significant role in strengthening reproductive health literacy and pedagogical readiness of prospective elementary school teachers in Papua.
Implementing a Pancasila-Based Content Creator Project in Science Learning to Strengthen Youth Character in Support of the Sustainable Development Goals Eni Supriati; Encep Syarief Nurdin; Yadi Ruyadi; Tri Suhartati
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13764

Abstract

This research aims to develop a character development model for youth through a Pancasila content creator project to enhance the understanding and actualization of Pancasila values. This study uses a mixed methods approach, namely qualitative and quantitative, with stages of analysis, exploration, and development of a character development model focused on Pancasila values. The results indicate that the Pancasila Content Creator Project is an effective and innovative character development model that successfully bridges the gap between students’ normative understanding and the practical actualization of Pancasila values. By integrating project-based digital content creation within science learning, particularly through sustainability and anti-bullying themes, the model enables students to internalize Pancasila values across cognitive, affective, and behavioral domains. The high effectiveness scores achieved in both implementation stages (91.72% in PIP 1 and 92.34% in PIP 2) indicate strong impacts on learning processes, participation, understanding, attitudes, behavior, and commitment to Pancasila values, with improvements observed following reflective refinement of the model. However, several obstacles still arise, particularly a digital skills gap, suboptimal teacher coordination, time constraints, and varying levels of home environment support.
The Influence of Group Investigation and Problem-Based Learning Models on Students' Critical Thinking Skills and Learning Motivation in Biology Learning Margaretha Apriana Wanda; Muh. Amir Masruhim; Evie Palenewan; Daniel; Taufan Purwokusumaning Daru; Elsje Theodora Maasawet
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13799

Abstract

This study aimed to analyze the effects of the Group Investigation (GI) and Problem-Based Learning (PBL) models on students’ critical thinking skills and learning motivation in biology learning. A quantitative approach with a quasi-experimental design was employed, involving two experimental classes and one control class at SMA Negeri 1 Muara Wahau. The first experimental class implemented the PBL model, the second applied the GI model, while the control class received conventional instruction. Data on students’ critical thinking skills and learning motivation were collected using achievement tests and questionnaires and were analyzed using two-way ANOVA followed by the Least Significant Difference (LSD) post hoc test. The results revealed that the learning model had a significant effect on both critical thinking skills and learning motivation (p < 0.05). Students taught using the PBL model demonstrated the highest improvement in critical thinking skills and learning motivation, followed by those taught using the GI model, while the conventional learning group showed the lowest outcomes. These results indicate that student-centered learning models encourage active engagement, problem-solving, and collaborative learning, which contribute to enhanced cognitive and motivational outcomes in biology learning. In conclusion, both PBL and GI models positively influence students’ critical thinking skills and learning motivation; however, the PBL model is the most effective. Therefore, the implementation of problem-oriented and collaborative learning models is recommended to improve the quality of biology learning processes and outcomes.
Analysis of Circular Waste Using a Causal Loop Diagram (CLD): A Case Study of Sukabumi City: Studi Kasus Kota Sukabumi Eneng Rahmi; Lioba Evita Anikusuma
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13814

Abstract

This study examines the transition from linear to circular municipal solid waste management in Sukabumi City using a system dynamics approach. Utilizing a qualitative descriptive design, data were gathered through surveys of 400 residents across 33 villages, field observations of waste facilities, and stakeholder interviews. Results reveal significant "lost circularity" driven by low source separation, negative public perceptions, and the underutilization of community-based 3R facilities (TPS3R) and waste banks. The developed Causal Loop Diagram (CLD) identifies five reinforcing loops which are centred on 3R participation, institutional collaboration, and material value—and four balancing loops related to infrastructure limits, behavioural resistance, and funding constraints. The dominance of these balancing loops explains the stagnation of the circular transition. Findings suggest that the system remains trapped in a "take–make–dispose" model due to operational bottlenecks. The study concludes that the primary leverage points for accelerating circularity include intensive 3R education, the reactivation of upstream infrastructure, and enhanced multi-actor collaboration. These interventions are essential to shift the system dynamics toward sustainable resource recovery and reduced landfill dependency.
Exploring Madurese Ethnoscience through the Preservation of the Ondhâgghâ Bhâsa Language in Community Texts: A Source of Contextual Science Learning Moh. Amrullah Stani; Hodairiyah; Suhartatik
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13818

Abstract

This study explores Madurese ethnoscience as embedded in community texts written in Ondhâgghâ Bhâsa—the formal register of the Madurese language—and examines how efforts to preserve this linguistic form serve as a foundation for contextual science learning. Focusing on the Tonggalate Reading House community in Giligenting Subdistrict, Sumenep Regency, the research adopts a qualitative descriptive approach informed by sociolinguistics and ethnoscience perspectives. Data were collected through observation, in-depth interviews with community members and educators, and thematic analysis of locally produced texts that integrate traditional knowledge, ecological practices, and cultural values. The findings indicate that Ondhâgghâ Bhâsa functions not only as a vehicle for cultural identity but also as a medium through which indigenous scientific understandings—such as local environmental management, agricultural techniques, and medicinal practices—are documented and transmitted. These community texts thus provide authentic, culturally grounded resources for science education. The study concludes that preserving Ondhâgghâ Bhâsa through community literacy initiatives simultaneously safeguards Madurese ethnoscience and offers meaningful contexts for developing relevant, student-centered science learning experiences.

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