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The Journal of Experimental Life Sciences (JELS)
Published by Universitas Brawijaya
ISSN : 20872852     EISSN : 23381655     DOI : 10.21776/ub.jels
Core Subject : Health, Science,
Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience
The Journal of Experimental Life Science (JELS) is a scientific journal published by Postgraduate School, University of Brawijaya as distribution media of Indonesian researcher’s results in life science to the wider community. JELS is published in every four months. JELS published scientific papers in review, short report, and articles in Life Sciences especially biology, biotechnology, nanobiology, molecular biology, botany, microbiology, genetics, neuroscience, pharmacology, toxicology, and Applied Life Science including fermentation technology, food science, immunotherapy, proteomics and other fields related to life matter. JELS is a scientific journal that published compatible qualified articles to the academic standard, scientific and all articles reviewed by the expert in their field. The Journal of Experimental Life Science (JELS) have a vision to become qualified reference media to publish the best and original research results and become the foundation of science development through invention and innovation on cellular, molecular, nanobiology, and simulation work related to life matter rapidly to the community. The Journal of Experimental Life Science (JELS) has objectives to published qualified articles on research’s results of Indonesian researchers in life science scope. JELS encompasses articles which discuss basic principles on natural phenomenon with cellular, molecular, and nanobiology approach.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 303 Documents
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Comparative Study of Terminalia catappa Linn. Leaf Extracts Against Aeromonas hydrophila Putra, Prily Lovian; Hariati, Anik Martinah; Prihanto, Asep Awaludin
The Journal of Experimental Life Science Vol. 15 No. 3 (2025)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2025.015.03.05

Abstract

Motile Aeromonas Septicemia (MAS), primarily caused by Aeromonas hydrophila, remains a critical threat in aquaculture due to its high mortality rates and economic impact. This study evaluated the antibacterial activity of crude Terminalia catappa L. leaf extract prepared using maceration and microwave-assisted extraction (MAE) methods against A. hydrophila in vitro. Phytochemical screening confirmed the presence of flavonoids, triterpenoids, tannins, and saponins in both extracts. The MIC test showed that MAE resulted in slightly lower optical density values than maceration, suggesting greater inhibition potential. Disk diffusion assays revealed that both extracts produced clear inhibition zones, with the MAE extract generating larger zones at equivalent concentrations. Scanning Electron Microscopy (SEM) confirmed morphological damage and lysis in A. hydrophila cells exposed to the extract. These findings demonstrate that T. catappa L. leaf extract exhibits significant antibacterial activity against A. hydrophila, with MAE being the more effective extraction method to enhance bioactivity.
The Influence of Shade Tree Diversity on Natural Enemy Communities and Microclimate in Coffee Agroforestry Systems Dewi, Nilasari; Kurnianto, Agung Sih; Haryadi, Nanang Tri; Rosita, Mitayuni Faur; Guretno, Titus Krido; Febrianti, Wanda Hamidah Zakiyah; Khowatini, Husnul; Priambodo, Bagus
The Journal of Experimental Life Science Vol. 15 No. 3 (2025)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2025.015.03.04

Abstract

Coffee agroforestry is an integrated farming system that combines coffee cultivation with the planting of shade trees. While it is well-established that vegetation diversity can support populations of natural enemies, few studies have investigated how varying levels of vegetation diversity interact with microclimatic conditions to influence insect community dynamics. Conducted in Desa Pace, Jember, East Java, the research compares simple and complex agroforestry systems in terms of their vegetation structure and the resulting impacts on natural enemy diversity. Field sampling was carried out in May, July, and September using yellow pan traps, accompanied by microclimatic measurements. Results revealed that the simple agroforestry had greater vegetation diversity. However, the Shannon-Wiener Index for vegetation was 0.94 in the complex system and 0.56 in the simple system, while the diversity of natural enemies was identical (1.70) in both systems. Microclimatic factors played a key role, with the simple having higher humidity and the complex exhibiting higher temperatures. These findings underscore that higher vegetation diversity does not always correspond to increased diversity among natural enemies, pointing to the influence of other ecological and environmental factors in shaping these communities. The study highlighted the importance of selecting appropriate shade vegetation to support sustainable and climate-resilient coffee agroforestry systems.
Mobile Phone Electromagnetic Waves and Pregnancy Outcomes: An Experimental Study in Mice Armalina, Desy; Susilaningsih , Neni; Sutanto, Heri; Sunarno, Sunarno
The Journal of Experimental Life Science Vol. 15 No. 3 (2025)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2025.015.03.06

Abstract

This study investigated the impact of mobile phone–derived electromagnetic wave (EMW) exposure on the uterus and progeny of pregnant Balb/c mice. Fourteen pregnant mice were randomly assigned to two groups (n=7 each). The control group (CG) was not exposed to EMW. In contrast, the experimental group (EG) was subjected to continuous exposure to EMW at a whole-body specific absorption rate (SAR) of 1.74 W.kg-1 for 24 hours daily from gestational day (GD) 1 to 19. On GD 20, all mice were euthanized, and body weight, oxidative stress biomarkers, and uterine histological parameters were assessed. Maternal body weight at termination showed a significant reduction in EG compared with CG (p < 0.05). However, differences in overall body weight gain, malondialdehyde (MDA), and superoxide dismutase (SOD) levels were not statistically significant (p > 0.05). Histological evaluation revealed marked alterations: endometrial scores were significantly higher in EG (3.32) than in CG (0.56) (p < 0.05), and myometrial scores were elevated in EG (1.72) versus CG (0.64). Endometrial thickness was reduced in EG (0.748 mm) compared with CG (1.470 mm) (p < 0.05), whereas myometrial thickness showed no significant difference. Continuous EMW exposure (24 h.day-1, GD1–GD19; SAR 1.74 W.kg-1) was associated with lower maternal weight at GD20, reduced litter size, higher endometrial/myometrial injury scores, and reduced endometrial thickness, while MDA and SOD differences were not statistically significant (p > 0.05). These findings warrant further studies to clarify the mechanisms involved without overstating the changes in oxidative biomarkers.

Page 31 of 31 | Total Record : 303

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