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Kota mataram,
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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 2,949 Documents
 273   274   275   276   277 
Gastroesophageal Reflux Disease: A Comprehensive Literature Review Baiq Salwa Nadira Alifa; Velda Mufarrihati Jacindalya; Desak Putu Candraningtyas; M. Badzlul Rahmansyah; Alya Nabila Putri; Faiza Firdausy; I Nyoman Rhino Raditya; Safrizal Raditya Wardana; Syifa’ul Layaliy; Baiq Widya Kaweryan; Istiazah Ramadhani; Latifa Ainun Pratiwi; Muh. As’ad Hamzah
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i3.11692

Abstract

Gastroesophageal Reflux Disease (GERD) is a chronic gastrointestinal disorder with increasing global prevalence that adversely affects quality of life and may lead to complications such as Barrett’s esophagus and esophageal adenocarcinoma. This narrative review aimed to synthesize current evidence on the pathophysiology, clinical manifestations, diagnosis, and management of GERD. A literature search was conducted using Google Scholar, PubMed, NCBI, and ScienceDirect for peer-reviewed articles and clinical guidelines published between 2021 and 2026. Twenty-two relevant articles in English and Indonesian were included. GERD results from an imbalance between aggressive factors, including transient lower esophageal sphincter relaxation, hiatal hernia, increased intra-abdominal pressure, and impaired esophageal motility, and the esophageal mucosal defense system. Non-Erosive Reflux Disease (NERD) is the most common phenotype, accounting for approximately 60–70% of cases. Diagnosis is based on symptom assessment supported by validated tools such as the GERD-Q questionnaire, ambulatory pH monitoring, and endoscopy when indicated. Proton pump inhibitors remain the first-line pharmacological therapy, complemented by lifestyle modification, while surgery is reserved for refractory or complicated cases. A patient-centered, evidence-based approach integrating early diagnosis, appropriate treatment, and patient education is essential to improve outcomes and prevent disease progression.  
Association Between BRCA1 Expression Status and Breast Cancer Metastasis Index (cM) in West Nusa Tenggara Alia Alia; Rizka Vidya Lestari; Yan Adhitya Kusuma
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
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.v26i3.11751

Abstract

Breast cancer remains a major cause of mortality among Indonesian women, with metastasis as its primary prognostic determinant. Although BRCA1 is a key tumor suppressor involved in genomic stability, its association with the breast cancer metastasis index in Indonesian patients remains limited. This research was designed to evaluate the association between BRCA1 expression and breast cancer metastasis index (cM), as well as differences in BRCA1 expression across metastasis categories. A cross-sectional observational study design was employed using 32 samples selected by purposive sampling, consisting of medical records and paraffin-embedded tissue blocks obtained from Pathology Anatomy Laboratory of the NTB provincial hospital. BRCA1 expression was assessed by immunohistochemistry. Bivariate analysis between variables was performed using the Fisher’s Exact test. Of 32 patients, 78.1% were classified as cM1. No significant association was identified between BRCA1 expression and metastasis index (p = 0.394), although low BRCA1 expression was descriptively more frequent in metastatic cases. BRCA1 expression alone is not an independent determinant of metastasis in breast cancer patients in NTB. This suggests that metastasis is multifactorial. Studies with larger samples and additional biomarkers such as hormonal receptors, proliferation index, and metastasis-related proteins are suggested to investigate the metastatic risk in this population.
Ethnobotany of Medicinal Plants in Gekbrong Village, Cianjur, West Java Novia Nurul Khairunnisa; Maryanti Setyaningsih; Ranti An Nisaa; Devi Anugrah
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
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.v26i3.11754

Abstract

Medicinal plants are an important component of local health practices and biodiversity-based knowledge systems. This study aims to identify medicinal plant species used by the people of Gekbrong Village, Cianjur, West Java, and to describe their plant parts, sources, preparation methods, and perceived benefits. A descriptive quantitative and qualitative approach was applied from January to March 2022 through field exploration, documentation, and interviews with community respondents selected purposively. 30 respondents were selected using purposive sampling by considering the interview results, which showed that they used medicinal plants in their daily lives. The study identified 42 medicinal plant species from 30 families, with Lamiaceae as the most represented family. Leaves were the most frequently used plant part, while boiling was the dominant preparation method. Most plants were obtained from home gardens, indicating the importance of household-level conservation of medicinal plant knowledge. These findings support the need to document local ethnobotanical knowledge and develop educational or conservation materials for younger generations.
Effects of Anchovy Head Meal and Rice Bran on KUB-2 Chickens Irwan Setyo Nugroho; Ali Mursyid Wahyu Mulyono; Muhammad Husein
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.11756

Abstract

This study addressed the increasing cost of conventional feed ingredients by evaluating local alternative feed resources for KUB-2 chicken production. Although anchovy heads (Stolephorus sp.) and rice bran have shown potential as low-cost feed ingredients, their combined substitution effects on KUB-2 chickens have not been previously investigated. This study aimed to evaluate the effects of substituting anchovy heads and rice bran in the diet on feed intake, body weight gain, feed conversion ratio, and mortality of KUB-2 chickens. The experiment used a Completely Randomized Design with three treatments: T0 (0% substitution), T1 (5% substitution), and T2 (10% substitution), each with four replications, resulting in 12 experimental units. Data were analyzed using analysis of variance followed by Duncan’s multiple range test. The results showed that substitution up to 10% had no significant effect (P>0.05) on all measured parameters and tended to maintain growth performance and feed efficiency. This indicates that the nutrient contribution of anchovy heads and rice bran was sufficient to support normal physiological growth without adverse effects on survival. These findings demonstrate that anchovy heads and rice bran can serve as practical local feed alternatives for partial replacement of conventional ingredients, offering potential feed cost efficiency while maintaining productive responses in KUB-2 chickens. Further studies using higher inclusion levels are recommended to determine the optimal biological and economic substitution threshold.
Analysis of Total Phenolic Content and Antioxidant Activity of Pakcoy Leaves Using A UV-Vis Spectrophotometer Della Putri Yuansari Fatmadi; Eva Agustina
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.11775

Abstract

Pakcoy (Brassica rapa L.) is a green leafy vegetable known to contain various bioactive compounds, particularly phenolic compounds that act as natural antioxidants. However, quantitative data regarding the total phenolic content and antioxidant activity of pakcoy leaf methanol extract remain limited and show inconsistent results depending on extraction methods and solvents used. Therefore, this study aimed to determine the total phenolic content and antioxidant activity of pakcoy leaf methanol extract using a UV–Vis spectrophotometric approach. The sample used in this study was fresh pakcoy leaves collected from the Gunung Anyar area, Surabaya. Extraction was carried out using the maceration method with 70% methanol as solvent. Total phenolic content was analyzed using the Folin–Ciocalteu method with gallic acid as a standard at a wavelength of 764 nm, while antioxidant activity was evaluated using the DPPH method. Data were analyzed quantitatively using linear regression for calibration curves and IC₅₀ determination. The results showed that the total phenolic content of pakcoy leaf methanol extract was 3.68 mg GAE/g extract. Antioxidant activity analysis resulted in an IC₅₀ value of 13.59 µg/mL, indicating a very strong antioxidant category. The linear regression analysis demonstrated a strong correlation between concentration and absorbance, confirming the reliability of the method used. In conclusion, the methanol extract of pakcoy leaves contains phenolic compounds that significantly contribute to its antioxidant activity. This study provides more specific quantitative evidence supporting the potential of pakcoy leaves as a natural antioxidant source and highlights the importance of solvent selection in optimizing bioactive compound extraction.
Bioaccumulation of Cadmium in Channa striata Fish from the Miai River, Banjarmasin, South Kalimantan Nurhilaliyyah Nurhilaliyyah; Heri Budi Santoso; Muhamat Muhamat; Hameda Dhaka Kusuma Taufiq
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.11791

Abstract

The Miai River in Banjarmasin is a habitat for the snakehead fish (Channa striata) located in a densely populated area with high human activity, potentially polluted by heavy metals such as cadmium. This study is important to monitor heavy metal concentration & their risks to the health & sustainability of the river ecosystem. The method used was purposive sampling with samples in the form of river water & snakehead fish (C. striata) at two different stations. Heavy metal analysis used Atomic Absorption Spectrophotometry (AAS). The results showed that kadmium concentration in water & fish at both stations were still safe or below the established quality st&ards. There was a significant negative correlation between the two (r=-0.472) & between cadmium concentration in fish & fish weight (r:-0.424). The conclusion of this study is that cadmium concentration in water can reduce fish quality & potentially pose a health risk to humans. The implications of this study emphasize the need for routine monitoring & preventive measures for heavy metal contamination.
Impact of Inlet Partition Distance on Broiler Carcass Quality in Closed House Production Systems Rizqon Fadhitya Anugerah; Catur Suci Purwati
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.11801

Abstract

The significance of environmental management in closed-house systems is discussed in this paper, with a focus on the function of partition location in preserving ideal microclimate conditions for broiler production. The growth performance and carcass quality of broiler chickens may be impacted by uneven temperature distribution caused by improper partition distances. This study examined how the carcass quality of broiler chickens in a closed-house system was affected by partition distances from the intake (P1: 0 m, P2: 30 m, and P3: 60 m). Partition location had a substantial impact on carcass weight, carcass percentage (P<0.01), and belly fat (P<0.05), according to an analysis of 36 male broilers. Due to heat buildup in the intermediate zone, P2 had the lowest carcass weight (2059.15 g), whereas P1 and P3 had the greatest (2234.03 g and 2207.88 g). Because of the best airflow close to the blower and effective energy conversion, P3 had the greatest carcass percentage (77.5%) and belly fat (1.9%). The study comes to the conclusion that partition distance modifies the microclimate of the home, which has a direct impact on the performance of broiler production.
Analysis of Inorganic Waste Material Flow for Zero Waste Achievement Scenarios on the Mataram University Campus Annisa Annisa; Suripto Suripto; Astrini Widiyanti; Ernawati Ernawati
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11806

Abstract

Waste management at the University of Mataram still uses the traditional scenario, namely collecting, transporting and disposing of it at the landfill so that it has not made a real contribution to reducing waste generation in Mataram City. This study aimed to determine the generation, composition, and potential for reducing inorganic waste on the Mataram University campus.  Data on inorganic waste generation and its composition were collected using the load count method according to ASTM D5231-92 and SNI 19-3964-1994. The data were then processed through Material Flow Analysis (MFA) with the 3R approach. The results showed that the inorganic waste generated on the Mataram University campus reached 431.09 kg/day (0.0208 kg/person/day), and after being collected by scavengers (average 149.09 kg/day), residue of 282.01 kg/day (65.43%) was left, with the composition dominated by paper (32.78%) and plastic (32.40%). The potential for reducing inorganic waste per day reached 186.43 kg, namely through reduce (86.8 kg), recycle (98.81 kg), and reuse (0.82 kg), leaving a residue of 95.59 kg (22.17%).  The new scenario for waste management with the implementation of the 3Rs approach can significantly reduce the generation of inorganic waste, thereby supporting efforts to achieve zero waste on the Mataram University campus.
Leaf Morphology and Functional Traits of Four Mangrove Seedling Species Under Nursery Conditions Lefdi Agung Nugraha; Pebriandi Pebriandi; Viny Volcherina Darlis; Muhammad Mardhiansyah; Ewi Irfani
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
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.v26i3.11822

Abstract

Mangrove species exhibit variations in leaf functional traits that reflect differences in resource-use strategies; however, information on the coordination of these traits during the seedling stage remains limited. This study aimed to evaluate leaf functional trait variation among four mangrove species (Avicennia alba, Bruguiera gymnorrhiza, Bruguiera parviflora, and Rhizophora apiculata) by analyzing leaf economic traits, leaf morphological traits, and their interrelationships. A total of 120 seedlings grown under relatively uniform nursery conditions were evaluated. The measured traits included Specific Leaf Area (SLA), Leaf Dry Matter Content (LDMC), Aspect Ratio (AR), and Shrinkage Index (SI). Data were analyzed using descriptive statistics, one-way analysis of variance (ANOVA) followed by Duncan's Multiple Range Test (DMRT), and Principal Component Analysis (PCA). The results showed that all measured traits differed significantly among species (P < 0.05), with effect sizes ranging from moderate to very large. PCA revealed that the first two principal components explained 73.75% of the total variation in leaf traits, indicating that interspecific variation was driven by the coordination of multiple leaf traits rather than by a single trait. These findings demonstrate that a multivariate approach provides a more comprehensive understanding of leaf functional trait variation among mangrove seedlings.
Review Article on Swiftlet: Biological Overview, Nest Production, Benefits, and Economic Potential Mohammad Hasil Tamzil
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.11823

Abstract

Swiftlets, particularly species within the genus Aerodramus, are producers of edible bird’s nests (EBN), a commodity with high economic value in the global market. This article was compiled based on a synthesis of various sources (scientific journals) covering biological, morphological, physiological aspects, nest production mechanisms, as well as the utilization and economic potential of swiftlet nests. Biologically, swiftlets possess morphophysiological adaptations for intensive aerial life, including a form of simple echolocation. The nests are formed from secretions of salivary glands that undergo hypertrophy during the reproductive season and are rich in bioactive glycoproteins. Economically, Indonesia is the world’s leading producer of EBN, contributing significantly to the export market. Conclusion: Swiftlets are EBN-producing birds with very high economic value. Proper management systems and strict control across all aspects of cultivation are required to ensure the sustainability of this genetic resource and its role as a contributor to national foreign exchange.

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