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Elza Triani
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Journal of Academic Biology and Biology Education
Published by Cahaya Ilmu Cendekia Publisher
ISSN : 30631645     EISSN : 30629705     DOI : https://doi.org/10.37251/jouabe
Core Subject : Health, Science, Education,
Biochemistry, Genetics & Molecular Biology Education Veterinary Other
Focus and scope: Journal of Academic Biology and Biology Education is a double-blind peer-reviewed journal published by Cahaya Ilmu Ilmu Scholar, dedicated to disseminating advances in science and research in the field of biology education both in Indonesia and in the global context in other countries. develop. Committed to excellence, the Journal of Academic Biology and Biology Education publishes comprehensive research articles and invites reviews from leading multidisciplinary educational experts to optimally contribute to policy and practice. The selection criteria prioritize papers that demonstrate high scientific value, convey new knowledge, and have a significant impact on biology education. The focus of this journal is evaluation, ethnobiology, biology teaching, PISA Tasks, and the learning of biology and related topics at the school and college level.
Arjuna Subject : Umum - Umum
Articles 25 Documents
 1   2   3 
Comparative Effectiveness of Tamarind (Tamarindus indica) and Starfruit (Averrhoa bilimbi) Solutions in Reducing Lead (Pb) Levels in Shellfish (Polymesoda erosa) Mirnayanti, A.; Maribao, Mary Grace B; Techly, San
Journal of Academic Biology and Biology Education Vol. 2 No. 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jouabe.v2i1.2073

Abstract

Purpose of the study: This study aims to determine the effectiveness of soaking duration in tamarind (Tamarindus indica) and starfruit (Averrhoa bilimbi) solutions in reducing the concentration of heavy metal lead (Pb) in shellfish (Polymesoda erosa) before and after treatment. Methodology: This study employed a descriptive method using Atomic Absorption Spectrophotometry (AAS) to measure Pb levels in Polymesoda erosa clams. Samples from Paotere Market, Makassar, were soaked in tamarind or starfruit solutions for 30, 60, and 90 minutes, then analyzed using AAS at a wavelength of 217.0 nm. Main Findings: Soaking Polymesoda erosa in tamarind solution for 30, 60, and 90 minutes reduced Pb levels by 30.69%, 40.92%, and 50%, respectively. Soaking in starfruit solution for the same durations reduced Pb levels by 19.32%, 65.91%, and 93.18%, respectively. Starfruit solution soaking for 90 minutes achieved Pb levels below the permissible consumption limit. Novelty/Originality of this study: This study introduces the comparative use of tamarind (Tamarindus indica) and starfruit (Averrhoa bilimbi) solutions to reduce Pb levels in Polymesoda erosa. It reveals starfruit’s superior effectiveness due to higher citric acid content, offering a simple, natural, and low-cost method for heavy metal reduction in seafood, potentially improving food safety in coastal communities.
Bacteria–Molasses Synergy in Heterotrophic Systems: A Sustainable Strategy for Catfish Survival and Water Quality Improvement Iqbal, Muhammad; Rasul, Zharifa
Journal of Academic Biology and Biology Education Vol. 2 No. 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jouabe.v2i1.2087

Abstract

Purpose of the study: This study aimed to evaluate the survival of catfish (Clarias gariepinus) in an intensive heterotrophic culture system, focusing on the effects of the system on fish survival, growth, and health. Furthermore, this study aimed to identify environmental factors that support successful cultivation in an intensive heterotrophic system. Methodology: This study used 12 fiber tanks with a funnel-shaped bottom and The study used 12 fiber tanks (250 L) with a density of 20 catfish (± 50 g/tail) and four treatments: feed only, feed+molasses, feed+bacteria, and feed+molasses+bacteria (heterotrophic system), each with three replications. Survival parameters and water quality (temperature, pH, DO, ammonia, nitrite, nitrate, VSS) were measured periodically. Data were analyzed using one-way ANOVA followed by a 5% Duncan test. Main Findings: The analysis results show that the heterotrophic system produces good catfish survival and water quality that supports the growth of catfish. The heterotrophic system is able to increase the survival of catfish in intensive cultivation by up to 80–90%, reduce the concentration of ammonia to 0.98 mg/L, nitrite to 1.06 mg/L, and nitrate, thus producing water quality that is very supportive of the success of intensive cultivation. In addition, the highest volatile suspended solid value was recorded at 0.90 mg/L in the heterotrophic system. Novelty/Originality of this study: This research presents a new approach to intensive catfish to simultaneously improve fish survival and optimize water quality. These findings expand knowledge on nitrogen waste management and provide practical strategies for the development of sustainable aquaculture technologies.
Exploring the Interplay of Self-Regulated Learning, Critical Thinking, and Scientific Communication: Insights from International Biology Learners Fernandez, Luta; Vega, Mark Gil; Wahyuningsih, Ema Nur
Journal of Academic Biology and Biology Education Vol. 2 No. 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jouabe.v2i1.2107

Abstract

Purpose of the study: The purpose of this study is to investigate the relationship between self-regulated learning (SRL) and students’ critical thinking and scientific communication skills in Biology learning. Specifically, it aims to describe students’ SRL, critical thinking, and communication levels, and analyze how SRL influences both skills in a multicultural bilingual context. Methodology: This study employed an explanatory sequential mixed method. The quantitative phase involved 60 grade XI students at Sekolah Indonesia Davao using total sampling, with data collected through SRL questionnaires, critical thinking tests, and scientific communication rubrics. The qualitative phase involved three students and two teachers via semi-structured interviews. Data were analyzed using descriptive statistics, regression, and Miles–Huberman’s model. Main Findings: The findings showed students’ SRL was moderate to high (M = 3.70), strongest in goal setting and weakest in environmental control. Critical thinking (M = 3.53) and scientific communication (M = 3.51) were moderate, with strengths in problem clarification and claim–evidence–reasoning, respectively. Regression analysis revealed SRL significantly predicted both critical thinking (R² = 0.37) and scientific communication (R² = 0.34). Novelty/Originality of this study: This study offers novel insights by integrating self-regulated learning, critical thinking, and scientific communication within Biology education in an international school context. Unlike previous research limited to two constructs, it empirically shows how SRL simultaneously predicts both skills, thereby advancing understanding of how metacognitive regulation fosters cognitive and communicative competencies in science learning.
Unexpected Insights: Raw Sub-Bituminous Coal Outperforms Gamma-Irradiated Coal in Bio-solubilization with Phanerochaete chrysosporium Sari, Arina Findo; Rasul, Zharifa G.; Sampulna, Jamela B.
Journal of Academic Biology and Biology Education Vol. 2 No. 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jouabe.v2i1.2152

Abstract

Purpose of the study: The purpose of this study is to investigate the effect of gamma irradiation treatment on sub-bituminous coal in the bio-solubilization process using Phanerochaete chrysosporium and to characterize the bio-solubilization products of raw and irradiated coal under laboratory conditions. Methodology: This study used sub-bituminous coal from South Sumatra, gamma irradiated with an Irpasena irradiator, and biosolubilized with Phanerochaete chrysosporium. Instruments included a Precision® shaker incubator, Novel® microscope, Hanna® pH meter, Shimadzu® GC-MS, and Shimadzu® UV-Vis spectrophotometer. Data were analyzed statistically using T-test with SPSS version 20 software. Main Findings: The results revealed that raw coal exhibited higher solubilization efficiency compared to irradiated coal, indicated by a greater increase in soluble phenolic (0.95 mg/mL) and aromatic compounds (1.42 mg/mL), as well as higher protein production. GC-MS analysis confirmed that raw coal generated more diverse and abundant metabolites, including phenolic and aromatic derivatives, while irradiated coal produced fewer compounds. Statistical analysis (T-test, p < 0.05) supported the significant differences between treatments. These findings suggest that gamma irradiation does not enhance, and may even inhibit, coal bio-solubilization .. Novelty/Originality of this study: This study provides new evidence that gamma irradiation does not enhance, but rather reduces, the bio-solubilization efficiency of sub-bituminous coal by Phanerochaete chrysosporium. The findings challenge the common assumption about irradiation benefits and contribute to advancing knowledge by highlighting the superior performance of raw coal in producing energy-equivalent products.
The Activity of Papaya Seeds (Carica papaya L.) Varieties of “Bangkok” and “California” in Inhibiting the Growth of Pathogenic Bacteria Rahman, Roszelina Abd.; Awaliah, Hilda; Jems, Nora Syazehan
Journal of Academic Biology and Biology Education Vol. 2 No. 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jouabe.v2i1.2190

Abstract

Purpose of the study: The purpose of this study is to evaluate the antibacterial activity of ethanol extracts from Bangkok and California papaya (Carica papaya) seeds against E. coli, Salmonella sp., and S. aureus, and to identify the chemical compounds responsible for their antibacterial properties using GC–MS analysis. Methodology: This study applied a Completely Randomized Design (CRD) using ethanol extracts of Carica papaya seeds. Equipment included GC–MS, rotary evaporator, autoclave, laminar flow, vortex mixer, hot plate, incubator, and micrometer. Media and reagents were NA, NB, MHA, ethanol, DMSO, and Amoxicillin. Tested bacteria were E. coli, Salmonella sp., and S. aureus. Data were analyzed with ANOVA and DMRT using SPSS. Main Findings: Ethanol extracts of Carica papaya seeds (‘Bangkok’ and ‘California’) significantly inhibited E. coli, Salmonella sp., and S. aureus growth. The highest inhibition zones occurred at 20% concentration, with ‘California’ showing stronger activity against Salmonella sp. and ‘Bangkok’ against S. aureus. MIC was 20% for Gram-negative bacteria. GC–MS identified 20 compounds in ‘Bangkok’ and 24 in ‘California’, dominated by hexadecanoic acid and various alkaloids, flavonoids, terpenoids, and fatty acids. Novelty/Originality of this study: This study provides new insights by comparing the antibacterial activity and chemical composition of ethanol extracts from Carica papaya seeds of ‘Bangkok’ and ‘California’ varieties. It identifies specific bioactive compounds through GC–MS and reveals variety-dependent antibacterial effects, advancing knowledge of papaya seeds as natural antibacterial agents and supporting their potential development as alternative antimicrobial resources.

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