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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,520 Documents
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Case Study of Colon in Loop Radiography Technique in Clinical Malignant Neoplasma in The Radiology Installation of ‘Aisyiyah Ponorogo Hospital Azizah, Nur; Mahanani, Ayu; Mufida, Widya
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10652

Abstract

A colonoscopy in loop for malignant neoplasms in the Radiology Department of 'Aisyiyah Ponorogo General Hospital (RSU) is performed using an NGT tube and a Rieser sphygmomanometer balloon as aids, along with gradual contrast media injection without fluoroscopy. This procedure differs from the standard rectal tube with fluoroscopic monitoring. This study aims to determine the procedure for a colonoscopy in loop and analyze the rationale for using an NGT tube, a Rieser sphygmomanometer balloon, and a technique without fluoroscopy in the department. The research method used a descriptive qualitative approach with case studies through observation, interviews, and documentation of three radiographers and one radiologist. Data were analyzed through data reduction, presentation, and conclusion drawing. The results showed that the examination procedure begins with patient preparation, including a low-fiber diet, consumption of soft foods, physical activity, and fasting before the examination. The contrast medium was administered in 200 cc increments at each stage, in the following order: lateral, AP, extended AP, oblique (LPO and RPO) projections, and then a post-evacuation AP image. The final stage consisted of a double-contrast image with 5–6 pumps of air. This technique is capable of producing clear radiological images to support the diagnosis, especially in malignant neoplasms. The study's conclusions confirm that the colon in loop examination at RSU 'Aisyiyah Ponorogo differs in the use of equipment and contrast medium compared to the general theory. This modification still produces optimal images for detecting colon abnormalities, including polyps and masses.
The Relationship Between Stress Levels and Academic Performance of Undergraduate Nursing Students in the 2024/2025 Academic Year at Universitas Advent Indonesia Gea, Inesti Febrianti; Boyoh, Debilly Yuan
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10676

Abstract

Academic stress is one of the psychological factors often experienced by students during higher education. Task pressure, academic demands, and adaptation to the learning environment can affect students' emotional well-being and academic performance. This condition needs to be studied because uncontrolled stress can reduce motivation and concentration in learning. The purpose of this study was to determine the relationship between stress levels and the academic performance of undergraduate nursing students in the 2024/2025 academic year at Advent University Indonesia. This study used a quantitative method with a correlational analytical design and a cross-sectional approach. The sample consisted of 77 students selected using purposive sampling. The research instrument used the Perceived Stress Scale (PSS-10) questionnaire to measure stress levels, while academic performance data was obtained from the Grade Point Average (GPA). The results of the Pearson correlation test showed a significance value of 0.479 and a correlation coefficient of -0.082, which means that there is no significant relationship between stress levels and academic performance. Thus, it can be concluded that stress is not the only factor that affects student learning achievement, as other factors such as motivation, social support, and the academic environment also play a role. The conclusion is that there is no relationship between stress levels and student academic achievement.
The Relationship Between Sleep Patterns and Blood Pressure in 7th Semester Students of the Faculty of Nursing, Adventist University of Indonesia Hutajulu, Raja; Boyoh, Debilly Yuan
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10691

Abstract

A person's ability to wake up feeling refreshed and fit is influenced by the quality of their sleep. If a person does not have symptoms of sleep deprivation and does not experience difficulty sleeping, then their sleep needs are said to be met. The purpose of this study was to determine the relationship between sleep patterns and blood pressure in seventh-semester students of the Faculty of Nursing, Adventist University of Indonesia. The research method used a quantitative approach with a descriptive correlative design and sampling using total sampling. Data were analyzed using univariate and bivariate analysis through the Spearman R correlation test. The results of the study showed that only 11 respondents (23.9%) had good sleep habits, while the majority of respondents (35, or 76.1%) had poor sleep patterns. Most respondents (45 people) had normal blood pressure, and only 1 person (2.2%) had hypertension. These results indicate that in general, students' blood pressure is still within normal limits, although risk factors such as stress and unhealthy lifestyles still need to be considered. The correlation coefficient of -0.084 and p-value of 0.581 (p>0.05) were determined by statistical tests using the Spearman's rho correlation test. The conclusion was that there was no significant correlation between the students' blood pressure and their sleep habits. Although the negative direction of the relationship suggests a tendency for poorer sleep patterns to lead to a slight increase in blood pressure, this relationship was very weak and not statistically significant.
The Relationship Between Knowledge Level and Professional Students' Attitudes Towards Occupational Health and Safety (K3) in The Operating Room Taebenu, Fiyola; Elon, Yunus
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10696

Abstract

Occupational Health and Safety refers to a safe and healthy workplace situation for workers, the company, and the community and environment in the factory or worksite area. Injuries from accidents are the most frequently reported physical risks in the operating room. This study aims to determine the relationship between the knowledge and attitudes of professional students of the Faculty of Nursing, Adventist University of Indonesia regarding (K3) in the operating room. The type of research used in this study is correlation analysis with a cross-sectional approach. Data analysis was carried out using 2 methods, namely Univariate Analysis and Bivariate Analysis using Spearman Rho. The results of the study found that the level of knowledge of professional students regarding K3 in the operating room is still relatively low. Most respondents have knowledge in the category of less (91.8%) and have a less good attitude (55.1%), while only a small portion showed a good or very good attitude. Professional students' attitudes and understanding about K3 in the operating room are significantly correlated negatively. A substantial but negative link is found, as indicated by the Spearman Rank correlation test value of r = -0.640 with p = 0.000. This implies that a better attitude does not always follow from greater knowledge. The conclusion of the study shows that professional students of the Faculty of Nursing, Adventist University of Indonesia do not yet have clear attitudes and knowledge about (K3) in the operating room.
Potential of Kecombrang (Etlingera elatior) Flower Ethanol Extract as an Anti-Bacterial for Escherichia coli and Pseudomonas aeruginosa in Urinary Tract Infection Patients Zahra, Angelique Fadhilah; Silviani, Yusianti
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10352

Abstract

Pseudomonas aeruginosa and Escherichia coli are the two bacteria that produce one of the most prevalent urinary tract infections (UTIs). The rising resistance to antibiotics in these bacteria has led to the need for alternative treatments. Using natural materials, such as torch ginger flowers (Etlingera elatior), which are known to possess potent antibacterial chemicals, is one such option. This study aimed to determine the effectiveness of ethanol extract of torch ginger flower against Escherichia coli and Pseudomonas aeruginosa, and to compare its performance with ciprofloxacin as a standard control. The study was designed using a cross-sectional experimental method. The disk diffusion method on Mueller-Hinton Agar was used to assess the extract's antibacterial activity after it was made by macerating it with 70% ethanol. With an average inhibition zone of 7.8 mm against Escherichia coli and 8 mm against Pseudomonas aeruginosa at a 100% concentration, the findings demonstrated the antibacterial activity of Etlingera elatior's ethanol extract. These inhibition zones, however, were much smaller than those of ciprofloxacin, which had respective measurements of 10 mm and 34 mm. Significant differences between the extract concentrations were found by statistical analysis using the Kruskal-Wallis and Mann-Whitney tests (p < 0.05). In conclusion, the ethanol extract of torch ginger flower shows potential antibacterial activity against UTI-causing bacteria, although its effectiveness is not yet comparable to ciprofloxacin. Further research is needed to improve extraction methods and develop more effective formulations to enhance its antibacterial properties.
The Role of Molecular Biomarkers in the Diagnosis and Prognosis of Brain Infections Salsabila, Adilah Nur; Ramdhini, Tisya Nasywa; Pramudiantara, Gede Naradhea
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10476

Abstract

Brain infections are among the most severe neurological disorders, with high morbidity and mortality. Conventional diagnostic approaches often face limitations in sensitivity, specificity, and time efficiency. Advances in molecular biotechnology have introduced molecular biomarkers as valuable tools for improving diagnostic and prognostic precision. This literature review, based on publications from 2015 to 2024 retrieved from PubMed, ScienceDirect, ProQuest, SpringerLink, and Google Scholar, aims to explore the role of molecular biomarkers in brain infections. Pathogen based biomarkers such as Polymerase Chain Reaction (PCR), Loop Mediated Isothermal Amplification (LAMP), and multiplex assays enable rapid and specific pathogen detection, while host response biomarkers, including cytokines such as IFN-γ, TNF-α, and IP-10, as well as ferritin and lactate levels in cerebrospinal fluid, reflect neuroinflammatory processes. The integration of pathogen detection and host response biomarkers enhances diagnostic accuracy, facilitates individualized therapeutic strategies, and contributes to improved clinical outcomes in neuroinfectious diseases.
Immunobiology and Molecular Approaches to Myasthenic Crisis in the Context of Tropical Biology Ningsih, Nur Aulia Ahya; Rifki, Muhammad; Firdaus, Nadine Aisyah Sultan; Latifa, Nindy Citra; Fathana, Prima Belia
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10513

Abstract

Myasthenic crisis is a severe acute complication of myasthenia gravis (MG) characterized by respiratory and bulbar muscle insufficiency due to impaired neuromuscular transmission, with pathogenesis involving autoantibodies targeting acetylcholine receptors (AChR), muscle-specific kinase (MuSK), and low-density lipoprotein receptor-related protein 4 (LPR4) that disrupt the integrity of the neuromuscular junction. This review aims to examine the immunobiological mechanisms of myasthenic crisis and explore the potential of modern biotechnological therapies and tropical bioactive compounds as adaptive treatment strategies for tropical populations. A comprehensive literature review was conducted focusing on genetic factors, tropical environmental influences, and advancements in molecular therapies. Genetic factors, including HLA class II and non-HLA genes, interact with tropical environmental conditions such as endemic infections, high temperature, extreme humidity, air pollution, and vitamin D deficiency, potentially exacerbating immune dysregulation and increasing crisis risk. Modern molecular therapies, including rituximab (anti-CD20), eculizumab (anti-C5), and efgartigimod (FcRn inhibitor), have demonstrated efficacy in reducing pathogenic autoantibodies and improving neuromuscular function, while tropical bioactive compounds such as curcumin and andrographolide show potential as adjuvant immunomodulators. Integrating biotechnological approaches with tropical bioprospecting provides a more adaptive and sustainable therapeutic strategy aligned with the biological characteristics of tropical populations. It is recommended that further clinical studies evaluate the safety, optimal dosing, and long-term efficacy of combined biotechnological and bioactive therapies in these populations.
The Effect of Various Types of Ameliorants on the Growth, Yield, and Quality of Mendong (Fimbristylis globulosa) Hidayat, Egi Agus Nur; Amanda, Adinda Putri; Rosmala, Arrin
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10620

Abstract

Mendong (Fimbristylis globulosa) is a fiber-producing plant with high economic value, widely utilized in traditional handicraft industries. However, declining land quality has reduced its productivity, necessitating soil improvement through ameliorant application to enhance its growth and product quality. This study aims to examine the effects of various ameliorant types on the growth, yield, and quality of mendong. The research employed a Randomized Block Design (RBD) with four treatments: no ameliorant (control/P0), goat manure (P1), dolomite (P2), and rice husk charcoal (P3). Each treatment was repeated six times, resulting in 16 experimental units with four plant samples per unit. Observed parameters included plant height, number of tillers, number of flowers, fresh and dry biomass, fresh and dry root weight, root length, and percentage of marketable clumps. Data were analyzed using ANOVA followed by LSD at a 5% significance level. The results showed that ameliorant application did not significantly affect plant height, number of flowers, fresh and dry biomass, root weight, nor root length. However, a significant effect was observed on the number of tillers at 5, 9, and 12 WAP, as well as on the percentage of marketable clumps. Goat manure (P1) generally produced the best performance in most parameters, particularly in product quality, with marketable clumps reaching 75%, higher than other treatments. These findings indicate that goat manure is the most effective ameliorant for improving mendong product quality.
Application of Soursop Leaf Flour Extract (Annona muricata L.) to Control Armyworms (Spodoptera litura Fab.) on Chili Plants (Capsicum annuum L.) Hower, Owisen; Fauzana, Hafiz; Deviona, Deviona
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10631

Abstract

Chili peppers (Capsicum annuum L.) are an important agricultural commodity whose productivity often decreases due to infestations by armyworm pests (Spodoptera litura Fab.). Soursop leaf extract (Annona muricata L.) has the potential to become an environmentally friendly botanical pesticide because its active compounds have been proven effective in suppressing feeding activity and causing mortality in these pests. This study aims to determine the effective concentration and the optimal application period of soursop leaf powder extract to control S. litura in chili plants. The study was conducted through two experiments. The first experiment used a completely randomized design with six treatments. The experimental data were analyzed using analysis of variance and further tested with the Honest Significant Difference (HSD) test at a 5% level. The second experiment used treatments with different application periods. The experimental data were statistically analyzed using tabulation and presented descriptively in the form of graphs. The research results showed that the effective concentration of soursop leaf powder extract to control S. litura on chili plants is 100 g/l of water, with an initial mortality time of 4.8 hours after application and a 50% lethal time of 42.0 hours after application, with an LC50 of 3.00% and an LC95 of 26.53%. The best application period for soursop leaf powder extract to control S. litura on chili plants is an application period with spraying every 2 days.
Ethanol Extract Concentrations of Anredera cordifolia, Aloe vera and Centella asiatica L. Leaves as Staphylococcus aureus Growth Inhibitor Kore, Joldi Yosua; Tobing, Joshua H. L.
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10636

Abstract

Excessive oil production, irritation, and bacterial infections, especially those produced by Staphylococcus aureus, are the main causes of acne, a common skin condition. The antibacterial qualities of a variety of therapeutic plants have long been utilized. This study aimed to evaluate the antibacterial effectiveness of ethanol extracts of Binahong (Anredera cordifolia), Aloe vera (Aloe vera), and Pegagan (Centella asiatica L.) leaves against the growth of Staphylococcus aureus. This research was a true experimental study using the Kirby-Bauer disk diffusion method. The ethanol concentrations used for extraction were 30%, 40%, and 50%, with meropenem as a comparison. The inhibition zones were measured after 24 hours of incubation at 37°C. The results showed that all extracts exhibited moderate antibacterial activity, with inhibition zones increasing along with higher extract concentrations. The highest mean inhibition zone was observed in Pegagan (8.9 mm), followed by Binahong (8.783 mm) and Aloe vera (8.26 mm). Statistical analysis showed that concentration (p = 0.005), day (p = 0.038), interaction between plant*day (p = 0.011), and plant*concentration*day (p = 0.001) have a significant effect on the inhibition zone diameter (p < 0.05). Meanwhile, plant (p = 0.244), interaction between plant*concentration (p = 0.380), and interaction between concentration*day (p = 0.342) show no significant differences in the inhibition zone diameter (p > 0.05). The conclusion is that there are differences in the inhibitory power of binahong, aloe vera, and pegagan plant extracts against Staphylococcus aureus bacteria used with 70% ethanol solvent.

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