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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 2,520 Documents
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Demographic Parameters and Growth Projection of Spangled Ebony Langur Population (Trachypithecus auratus) in the Kerandangan Natural Tourism Park Protection Block Through a System Dynamics Approach Putri, Regina Natasya; Syaputra, Maiser; Anwar, Hairil
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9845

Abstract

Indonesia is a country with rich biodiversity of flora and fauna, one of which is the langur from the primate family. Langurs are also listed on the 2008 International Union for Conservation of Nature and Natural Resources (IUCN) Red List as a primate species classified as vulnerable due to population decline and habitat degradation. Spangled Ebony Langurs play a crucial ecological role, influencing forest regeneration patterns and tree species diversity in their habitat. The purpose of this study was to provide information on demographic parameters and population growth of Spangled Ebony Langurs (Trachypithecus auratus) in Kerandangan Nature Tourism Park. The research method was carried out using the Line Transect method. The results of the study found 2 groups of Spangled Ebony Langurs with a total of 57 individuals. Distribution of structural patterns. Group size ranged from 27 to 30 individuals, with an overall population density of 0.35 individuals per hectare, a sex ratio of 1:8, and a birth rate of 0.26. The total population increased from 57 individuals (Year 1) to 68 individuals (Year 5), with a consistent population increase every year. This simulation assumes a constant birth rate of 26% per year and a death rate of 10% per year. In the fifth year, the population reached 68 individuals, with 2 births and 0 deaths. In conclusion, the langur population is predicted to increase steadily over the next 5 years. In the fifth year, the population is estimated to reach 68 individuals.
Total Phenolic of Postbiotics from Rhizopus oligosporus with Edamame Husk Substrate (Glycine max (L.) Merrill) Prasetyo, Angga; Rasmiyana, Rasmiyana; Frengky Hermawan Hadi Prasetyo
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9878

Abstract

Edamame husk (Glycine max (L.) Merrill) is an agro-industrial waste product rich in carbohydrates complex, therefore potentially suitable as a substrate for postbiotics production using the fungus R. oligosporus. Postbiotics are the latest generation of biotics consisting of inanimate microbial cells along with their metabolites. This study aimed to determine the total phenolic content of postbiotics generated from R. oligosporus using edamame husk as substrate through submerged fermentation for 5 days. Fermentation was conducted using variations in spore inoculum volume (0; 0,5; 1; 1,5 ml at a concentration 1 x 106 spores/ml). The produced postbiotics were then subjected to heat treatment at 121oC for 15 minutes using autoclave and analyzed for total phenolic content using the Folin-Ciocalteu method. The measurement results showed that the addition of 1,5 ml of spores R. oligosporus produced the highest total phenolic content and was significantly different from the other treatments. Viability testing of R. oligosporus after heat treatment showed no growth on PDA medium after 21 days of incubation, thus met one of the criteria for postbiotics. These findings indicate that edamame husk have potential as an alternative raw material in the production of postbiotics using R. oligosporus.
Optimization of Lip Balm Formula From Buni Fruit Extract (Antidesma bunius L. Spreng) with A Combination of Beeswax Lanolin Syahputri, Acyuta Pramesthi Asmara Sayidina; Hajrin, Wahida; Subaidah, Windah Anugrah
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9913

Abstract

Lip balm is a preparation with a wax base that is applied to the lips to moisturize them so they aren’t easily dry and cracked. Lip balm, when used, is very dependent on its adhesive power and spreadability, which are influenced by the composition of the base and the additional ingredients. The purpose of this study was to determine the optimum concentration of beeswax and lanolin in Lip balm preparations as wax and softening agents using the Simplex Lattice Design (SLD) method. Extraction of buni fruit was carried out by the maceration method using 80% ethanol solvent and 3% citric acid (85: 15). Data analysis was carried out using ANOVA to see the distribution of data on parameters of physical properties, and a one-sample T-test for confirmation analysis of the optimum formula composition. The results of the study obtained an extract yield of 41.534% and positively contained anthocyanins. The analysis results of physical properties using Design Expert v.13, the optimum concentration of beeswax was 12% and lanolin 4% with a desirability value is 1. The Lip balm with buni fruit extract, with the optimum formula, had a dense, homogeneous texture, brownish red with a peach aroma, and a pH of 4. Verification of the optimum formula showed no significant difference between the experimental response and the predicted response, with a value of melting point 53±1 oC; adhesive power 24.42±3.55 seconds; spread power 3.226±0.031 cm. The optimum formula produced physical properties that meet the specified requirements, and the verification results showed a match between the predicted response and the experimental results.
Ethnobotany of Minangkabau Culinary and Their Phytochemical Test Agesti, Asih Rahayu Ajeng; Fitmawati, Fitmawati; Dianti, Putri Rahma; Al Yamini, Thobib Hasan
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9924

Abstract

Minangkabau ethnic has rich natural and cultural resources. The Minangkabau ethnic community in Lima Puluh Kota Regency, West Sumatra, possesses rich traditional knowledge in utilizing local plant species as ingredients in their culinary heritage. This study aimed to document the ethnobotanical use of food plants and examine their phytochemical properties to assess their potential as functional foods. Ethnobotanical data were collected using open-ended interviews and field observations involving key informants from various Nagari (villages) selected using purposive sampling methods. Phytochemical tests were conducted to identify alkaloids, saponins, steroids, tannins, and triterpenoids in the plants used. The study identified 43 plant species belonging to 29 families used as the main ingredients in 20 types of traditional culinary with plant species are dominated by Fabaceae. Leaves were the most frequently used plant parts, followed by fruits, stems, flowers, and tubers. These ingredients were sourced from wild and cultivated plants growing in yards, gardens, and fields. Phytochemical screening of  plants revealed the presence of secondary metabolites including alkaloids (13 species), flavonoids (26), saponins (21), tannins (21), triterpenoids (16), and steroids (8). The findings of our study indicate that traditional Minangkabau food plants are not only culturally significant but also possess medicinal potential, warranting further scientific exploration and conservation of local knowledge.
Carbon Stock Dynamics with Spatial and Temporal Approaches in Forest Area with Special Purpose (KHDTK) Senaru Kertalam, Lalu Rizki Aji; Latifah, Sitti; Idris, Muhamad Husni
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9934

Abstract

Forests have the ability to reduce carbon dioxide (CO2) and store it in the form of biomass. This study aims to determine the dynamics of carbon stocks in the Senaru Special Purpose Forest Area (KHDTK) with a spatial and time approach. Data collection was carried out in July-August 2024. Located in Senaru KHDTK. Vegetation data collection was carried out by systematic sampling with random start, vegetation data taken in the form of species, diameter and height were carried out on 43 sample plots measuring 20x20m with sub plots of 10x10m, 5x5m and 2x2m.  Standing carbon stocks were determined using the allometric equation. Carbon stock dynamics were analyzed by comparing the results of the study with stock data from previous studies. Spatial analysis was conducted using ArcGis application with Inverse Distance Weight (IDW), Kriging and Spline spatial interpolation methods. The results showed that the average surface carbon stock was 66.35 tons/ha. It decreased by 13.48 tons/ha in 5 years, and decreased by 17.36 tons/ha in 10 years. The spatial interpolation method that has the least error rate is the Kriging method. To increase the carbon stock of Senaru KHDTK, it is necessary to increase the population of forestry plants including large-trunked multipurpose plants such as durian, dao, jackfruit and others.
Isolation and Characterization of Cellulolytic Bacteria from Mangrove Leaf Litter in Bale Mangrove Ecosystem Aulia, Fitri; Idrus, Agil Al; Rasmi, Ayu Citra
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9940

Abstract

This study aimed to isolate and characterize cellulolytic bacteria from mangrove leaf litter in the Bale Mangrove ecosystem, East Lombok. A descriptive-explorative method was employed involving serial dilution, CMC agar culture, morphological and biochemical identification, Gram staining, and qualitative cellulase activity testing using Congo red. A total of 15 bacterial isolates were obtained and analyzed. All isolates were Gram-positive, predominantly rod-shaped (bacilli), and exhibited varied colony morphologies. Biochemical tests revealed diverse metabolic capabilities, and seven isolates demonstrated cellulolytic activity, with isolate P2.2 showing the highest cellulolytic index (IS = 3.78). The findings indicate the presence of highly active cellulolytic bacteria in local mangrove litter with potential roles in natural cellulose degradation. This research confirms the ecological relevance of local microbial diversity and suggests further exploration of their enzymatic potential for biotechnology and environmental management.
Ecological Index and Distribution of Sponges (Porifera) in the Waters of Labuan Beropa Village, South Konawe Sipayung, Putri Pebrina; Afu, La Ode Alirman; Rahmadani, Rahmadani
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9950

Abstract

Tropical coastal ecosystems possess high biodiversity and play a vital role in maintaining ecological functions, supported in part by the presence of sponges (Porifera) as filter feeders. This study aimed to identify species diversity, calculate ecological indices, and analyze the distribution patterns of sponges in the coastal waters of Labuan Beropa, South Konawe. Field surveys were conducted through sponge sampling at several observation sites, followed by taxonomic identification, calculation of Shannon-Wiener diversity index (H’), evenness (E), dominance (C), and distribution pattern analysis using the Morisita index. Seven benthic sponge species were recorded: Aaptos pernucleata, Aaptos suberitoides, Clathria (thalysias), Haliclona cymaeformis, Hyrtios erectus, Mycale sp., and Xestospongia muta. The highest density occurred in areas with stable rocky substrates, calm currents, and low anthropogenic disturbance, while the lowest density was observed in areas with intense human activities. H’ values were low (0.632–0.735), E values were high (0.748–0.869), and C values were low (<0.3). Distribution patterns were predominantly clumped, with some species exhibiting uniform or random patterns. These findings indicate that habitat physical quality and the degree of anthropogenic pressure are key determinants of sponge community structure. The baseline data generated can be used to support sustainable management and conservation of tropical coastal ecosystems.
Improvement in Sperm Quality of Mice Due to Mono Sodium Glutamate (MSG) Exposure with Zingiber officianale var Rubrum Extract Putri, Arista Adityasari
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9961

Abstract

Technological advances have made many things easier in various fields, one of which is the processing of sugar cane, which is used as a food flavoring and contains monosodium glutamate. These disorders can be reduced by administering Red Ginger as one of the antioxidant compounds that can enhance and improve sperm motility. The purpose of this study was to prove the increase in sperm motility in male rats exposed to MSG with the administration of red ginger. This study used a randomized post-test only control group experimental design, with 30 Wistar rats aged 13-14 weeks and weighing 200-300 grams.  Statistical analysis was performed using One-Way ANOVA and Chi-Square tests. The results of this study show that in the sperm motility examination, there were 7 rats with motile sperm in the control group and group 1 (MSG), while in group 2 (MSG and Red Ginger) there were 8 rats with motile sperm. The group subjected to MSG plus red ginger therapy had the highest median sperm motility value among the three groups in this study, according to a comparison of their median values. The treatment of red ginger extract to male rats exposed to MSG tends to improve sperm motility, it can be concluded. Further research recommendations could include adding more varied treatment times so that more significant differences can be seen with graduated therapeutic doses.
Optimization of Cream Formula Extract Sargassum Crassifolium Using Varied Concentrations of Glyceryl Monostearate and Triethanolamine Emulgators With The Simplex Lattice Design Method Utari, Weny Syafitri; Pratiwi, Eskarani Tri; Subaidah, Windah Anugrah; Ridwan, Sucilawaty
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9970

Abstract

Sargassum sp. contains bioactive compounds in the form of phenols that have the potential as sunscreen agents in the ultra category, namely 33.2 ± 3.11. The most commonly used formulation for sunscreen products is cream. The purpose of this study was to determine the optimal concentration of glyceryl monostearate and triethanolamine as emulsifiers for Sargassum sp. extract cream, as well as to investigate the physical properties of the optimal Sargassum sp. extract cream formulation. Optimization of the cream formulation was carried out using the Simplex Lattice Design method with Design Expert 13 software, resulting in 8 formulations. The optimal formula obtained was then subjected to physical evaluation, including organoleptic evaluation, homogeneity, and emulsion type. Data analysis used the one-sample t-test method in SPSS version 25. The yield of Sargassum sp. extract was 7.37%. The optimization results showed that the optimal concentration was 7.6% glyceryl monostearate and 0.5% triethanolamine. The optimal cream formulation has good physical properties, namely a soft semi-solid texture, light green color, homogeneity, oil-in-water cream type, pH value of 7.64±0.03, viscosity of 7.626±261.02 cP, adhesive power of 4.37±0.06 seconds, and spreadability of 6.3±0.11 cm. The results of the one-sample t-test statistical analysis of the physical properties of the optimal formulation showed no significant difference from the predicted results, with a confidence level (p>0.05).
Hypothyroidism with Myxedema Coma Complications: A Review of Articles during November 2024 Paramadinda, Ni Made Ayu Mas Sista; Aulia, Siti Zahroni; Rahmawati, Fadila; Yuar, Alana Akmal; Valencia, Perlin Nigel; Qadri, Annisa Salsabila; Rabbani, Yaskuna Urfi; Hakim, Baiq Sheila Oktalia; Yolanda, Rizki; Wibawa, Galang Edi
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): 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.v25i3.9984

Abstract

Hypothyroidism is a condition characterized by decreased thyroid hormone production due to impaired thyroid or hypothalamic-pituitary gland function. Hypothyroidism is more common in women due to iodine deficiency. This condition can also be caused by autoimmune disorders. Symptoms of hypothyroidism vary, from mild, with few or no symptoms, to severe. Most symptoms are variable, vague, and delayed in onset. This paper aims to provide a comprehensive understanding of the diagnosis and management of hypothyroidism complicated by myxedema coma. The writing method used in this literature review is references from various Indonesian and English-language literature. The literature search was conducted during November 2024, with 10 articles obtained. The review results showed that severe and uncontrolled hypothyroidism can lead to myxedema coma. Myxedema coma is a condition characterized by decreased consciousness accompanied by generalized edema. This condition frequently associated with hypothermia and hyponatremia. Myxedema coma can be diagnosed using a scoring system. Therefore, an understanding of how to diagnose and properly manage hypothyroidism with complications of myxedema coma is needed for early detection so as not to worsen the patient's prognosis.

Page 208 of 252 | Total Record : 2520

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