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All Journal EDUSAINS Jurnal Inovasi Pendidikan IPA PENDIPA Journal of Science Education Jurnal Pendidikan Matematika Raflesia BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains JURNAL PENDIDIKAN TAMBUSAI Jurnal Kumparan Fisika Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Aksara: Jurnal Ilmu Pendidikan Nonformal Bioscientist : Jurnal Ilmiah Biologi Munaddhomah: Jurnal Manajemen Pendidikan Islam DIKSAINS : Jurnal Ilmiah Pendidikan Sains Kasta: Jurnal Ilmu Sosial, Agama, Budaya dan Terapan Dikdimas : Jurnal Pengabdian Kepada Masyarakat Physics and Science Education Journal (PSEJ) JIPI (Jurnal IPA dan Pembelajaran IPA) Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Journal of Primary Education Sasambo: Jurnal Abdimas (Journal of Community Service) Jurnal Biosilampari: Jurnal Biologi IJIS Edu : Indonesian Journal of Integrated Science Education SPEKTRA: Jurnal Kajian Pendidikan Sains
Rendy Wikrama Wardana
Universitas Bengkulu
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Nursing Physics Social Sciences Other

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POTENTIALS OF BENGKULU’S LOCAL BIOMASS FOR BIOETHANOL PRODUCTION: A SYSTEMATIC LITERATURE REVIEW Elza Heryensi; Aceng Ruyani; Fitri April Yanti; Rendy Wikrama Wardana; M Lutfi Firdaus
Physics and Science Education Journal (PSEJ) Physics and Science Education Journal (PSEJ), Volume 5 Number 3, December 2025
Publisher : Physics Education Departement, Islamic State University Sulthan Thaha Saifuddin Jambi - Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30631/t2b9ec11

Abstract

The development of bioethanol based on local biomass is an important strategy to support national energy diversification. Still, the potential of Bengkulu biomass and its technical feasibility have not been systematically studied. This study aims to analyze the potential of cassava waste, coconut coir, oil palm empty fruit bunches (OPEFB), and water hyacinth as raw materials for second-generation bioethanol production, and to identify the multidimensional challenges associated with their conversion processes. The method employed is a Systematic Literature Review (SLR) with a qualitative thematic synthesis, based on the PRISMA 2020 guidelines. The search was conducted across five major databases (Scopus, Web of Science, ERIC, IEEE Xplore, and ScienceDirect) with a publication range of 2018-2025, resulting in 414 articles. Twelve articles met the criteria after a quality assessment using MMAT. The results indicate that the utilization of local biomass in Bengkulu remains fragmented. However, there is significant technical potential, including an ethanol yield of 75-180 L/ton of cassava waste, coconut coir through pretreatment with DES/NADES, OPEFB ±10% (v/v) with adaptive yeast, and water hyacinth at 7-8 g/L through SSF. The study offers a multi-feedstock conceptual framework and recommends pilot plants, LCA analyses, and economic studies to support sustainable regional implementation.
Potensi Kombinasi Ekstrak Daun Matoa (Pometia pinnata) dan Ektrak Daun Kelor (Moringa oleifera) sebagai Antidiabetik Pada Mencit (Mus musculus) Terinduksi Alloksan Siti Haryani Muayadah; Aceng Ruyani; Afrizal Mayub; Bhakti Karyadi; Rendy Wikrama Wardana
SPEKTRA: Jurnal Kajian Pendidikan Sains Vol. 11 No. 2 (2025): SPEKTRA: Jurnal Kajian Pendidikan Sains
Publisher : Physics Education Study Program, Faculty of Education and Teacher Training, UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/spektra.v11i2.9611

Abstract

Diabetes mellitus (DM) is a chronic metabolic disease whose prevalence continues to increase globally. Plant-based alternative therapy is becoming an increasingly popular option due to its minimal side effects. This study aims to test the potential of a combination of matoa (Pometia pinnata) and Moringa (Moringa oleifera) leaf extracts as an antidiabetic in alloxan-induced male mice (Mus musculus). The study was conducted experimentally with five treatment groups, including negative control, positive control, and three groups of extract combination doses (100, 225, and 300 mg/kg BB). Phytochemical tests showed the content of active compounds alkaloids, flavonoids, and steroids in the combination of extracts. Blood glucose level test results showed that the combination dose of 300 mg/kg BB (Dose III) was able to reduce blood glucose levels significantly and had comparable effectiveness with glibenclamide as a standard drug. Statistical analysis (One Way ANOVA and Post Hoc Bonferroni) confirmed that Dose III showed a significant difference compared to the lower dose, and was not significantly different from the positive control.Beyond these results, this study contributes new insights by highlighting the synergistic effect of combining two medicinal plants, providing a scientific basis for the development of standardized herbal formulations as potential alternatives in diabetes management.
Analisis Kandungan Asam Sianida (HCN) pada Rebung Bambu Kapal (Gigantochloa schortechinii) sebagai Bahan Makanan Roleka Julia Marcellina; Bhakti Karyadi; Rendy Wikrama Wardana; Euis Nursa’adah; Afrizal Mayub
SPEKTRA: Jurnal Kajian Pendidikan Sains Vol. 11 No. 2 (2025): SPEKTRA: Jurnal Kajian Pendidikan Sains
Publisher : Physics Education Study Program, Faculty of Education and Teacher Training, UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/spektra.v11i2.9702

Abstract

This study aims to determine the effect of different lengths of soaking on cyanide acid (HCN) content in ship bamboo shoots (Gigantochloa schortechinii) which are the main ingredient in making Lemea. Lemea is a specialty food of the Rejang tribe in Bengkulu Province where the main ingredient of Lemea is fermented chopped bamboo shoots (young bamboo). This study used a completely randomized design (CRD) with five repetitions and four treatment levels, namely. A = no treatment/control, B = 4 days soaking, C = 5 days soaking, D = 6 days soaking and E = 7 days soaking. The results of the analysis showed that different lengths of soaking time had an effect on reducing cyanide acid (HCN) content. The highest to lowest average cyanide acid (HCN) content was obtained from treatments A (70.066 ppm), B (53.759 ppm), C (42.374 ppm), D (29.739) and E (16.458 ppm). The best cyanide acid (HCN) content was obtained in the immersion treatment for 7 days with an average HCN content of 16.458 ppm, this result is highly recommended because the HCN content is safe for consumption according to FAO (Food and Agriculture Organization).
Enhancing Critical Thinking Through Coastal Culture-Based Differentiated Science Learning Fitri April Yanti; Rendy Wikrama Wardana; Noorzana Khamis
Jurnal Inovasi Pendidikan IPA Vol. 11 No. 2: October 2025
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jipi.v11i2.88295

Abstract

The purpose of this study was to enhance critical thinking skills through the implementation of coastal culture-based differentiated science learning. The research was conducted from August to November 2024 using a quasi-experimental nonequivalent control group design at  State Junior High School 2 Bengkulu, Indonesia. The sample consisted of three eighth-grade classes: experimental group 1 (8A), experimental group 2 (8B), and the control group (8C), selected through purposive sampling. Students’ critical thinking skills were assessed using a validated and reliable test instrument (r = .89). Data were analyzed with one-way ANOVA, which revealed significant differences among groups (p < .001). The average N-gain score of critical thinking skills in experimental group 1 (.40, medium category) was higher than that of experimental group 2 (.20, low category) and the control group (.009, low category). Based on the hypothesis testing, it can be concluded that coastal culture-based differentiated science learning has a significant effect on students’ critical thinking skills (p < .001). These findings confirm that culturally contextualized differentiated learning significantly enhances critical thinking. Theoretically, this model contributes to science pedagogy by integrating cultural relevance to support effective, innovative instruction
Potensi Biomassa Pohon dan Emisi Karbondioksida Untuk Menilai Keseimbangan Karbon di Lingkungan Endah Tri Wahyuningsih; Bhakti Karyadi; Rendy Wikrama Wardana; Euis Nursa’adah; Afrizal Mayub
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 4 (2025): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i4.16620

Abstract

This study aims to analyze carbon emissions from motor vehicles and the potential for carbon absorption by vegetation on four main roads in Bengkulu City: Padang Jati, Hibrida, Pagar Dewa, and Sukarami. The approach used is quantitative-descriptive, with data collected through traffic surveys and direct measurements of vegetation parameters during the observation period. Emissions are calculated using emission factors based on IPCC/KLHK standards according to vehicle type, while tree biomass is analyzed using allometric equations based on trunk diameter, track length, and vegetation type. Carbon analysis on four roads in Bengkulu City shows a significant imbalance between vehicle emissions and vegetation absorption. Sukarami recorded the highest emissions (751,813 kg CO₂) with a biomass of only 24,053 kg (absorption of 40,607 kg), making it a carbon source. Conversely, Padang Jati had the largest biomass (881,578 kg) compared to emissions of 431,889 kg CO₂, making it a carbon sink with absorption of 344%. Hibrida and Pagar Dewa showed intermediate conditions, with emissions of 424,145–570,063 kg CO₂ and absorption of 544,349–947 kg, indicating an unbalanced absorption capacity. These results emphasize the need to increase vegetation cover and manage green spaces as strategies for mitigating urban climate change.
Co-Authors -, Maison A. A. Sukarso Abdul Muktadir ACENG RUYANI Aceng Ruyani Aceng Ruyani Aceng Wikrama Ruyani Afizal Mayub Afrizal Mayub Agus Setyowati Alvera Rosa Anggun Prihatini Ariefa Primair Yani Athika Ulfah Putri Bayu Pradikto Bhakti Karyadi Bhakti Karyadi Deni Parlindungan Dewi Liesnoor Setyowati Dina Apriyanti Ega Krisna Pradita Elza Heryensi Elza Heryensi Endang Widi Winarni Euis Nursa’adah Euis Wikrama Nursa’adah Fitri April Yanti Fitri Mulyani* Hayuni Retno Widarti Henny Johan Herlina Apriska Ida Cuci Safitri Indra Sakti Iwan Setiawan Khairul Hidayah Khanna Hadirama Lasriani Lasriani Lidyana Febri Engelia M Lutfi Firdaus M. Anas Thohir M. Lutfi Firdaus M. Sutarno M. Syaipul Hayat Mellyta Uliyandari Mellyta Uliyandari Uliyandari Muhammad Lutfi Firdaus Nensi Pitaloka Niki Dwi Dia Dara Niko Utomo Nirwana Nirwana Noni Noviana Noorzana Khamis Nursaadah, Euis Purwanti Widhy Hastuti Putri Ramadan Lazuardi Rahma Febriana Pratiwi Rinda Fitri Handayani Riyanto Roleka Julia Marcellina Sausan Fatin Nurazizah Siti Haryani Muayadah Sofino, Sofino Sutarno Sutarno Ur Aniliawati Vazella Lavenia Lorenza Wahyuningsih, Endah Tri Winarko Winarko Yestilia Anggraini Zakyya Septiana Putri