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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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Formulation and Evaluation of Red Betel Leaf (Piper crocatum L) Ethanol Extract 96% in Anti-Acne Cream Pratiwi, Yani; Azis, Asyari Al Hutama; Dilla, Nurfarah
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.v25i3.9570

Abstract

Acne (Acne vulgaris) is a common skin problem experienced, especially by teenagers and young adults, which can lower self-esteem. One causes is bacteria Propionibacterium acnes and Staphylococcus epidermidis. Red betel leaves (Piper crocatum L) are known to contain active compounds such as flavonoid, tannins, alkaloid, and essential oil that effective as antibacterial and anti-inflammatory agents. The aim of this study is to formulate and evaluate a topical cream containing a 96% ethanol extract of red betel leaves (Piper crocatum L.) as an anti-acne preparation. This study employed a laboratory experimental approach, formulating an oil-in-water (O/W) type cream by varying the concentrations of the emulsifiers stearic acid and triethanolamine (TEA). The physical properties of the cream were assessed through organoleptic evaluation, homogeneity testing, pH measurement, spreadability, adhesion, viscosity, cream type identification, and mechanical stability testing. The results that formula IV with an extract concentration of 12.5%, stearic acid 17%, and TEA 3.5% produces the most optimal results, with stable physical characteristics, homogeneous, and meeting topical cosmetic standards. Thus, 96% ethanol extract cream of red betel leaf has potential to be used as alternative treatment for acne based on natural ingredients.
Physical Characteristics of Antidesma spp. (Phyllanthaceae) Bogor Botanical Garden Collection Umami, Riza; Husaini, Iin Pertiwi A; Putri, Irma Leilanai Eka
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.v25i3.9582

Abstract

Indonesia has a strategic position that supports high biodiversity and produces a variety of medicinal plants. Antidesma is one of the plants widely known in traditional medicine. This study aims to describe the morphological characteristics of antidesma, especially in the collection at the Bogor Botanical Gardens. This study was conducted at the Center for Applied Botany Research, BRIN, West Java, from November to December 2023. This study successfully identified eight species of Antidesma, namely Antidesma montanum var. Salicinum (Ridl.) Petra. Hoffm, Antidesma montanum Blume, Antidesma minus Blume (Euph.), Antidesma neurocarpum Miq., Antidesma stipulare Blume, Antidesma bunius (L.) Spreng, Antidesma tetrandum Blume, and Antidesma tomentosum Blume. Morphologically, Antidesma is a shrub to a woody tree with a round stem and crusty bark. The leaves are single, pinnate, and have smooth edges. The fruit is a drupe (bun) that ripens purplish-black, with a combination of sour, bitter, and sweet flavors. This discovery is important for species identification, exploration of local uses, and plant breeding programs to preserve Indonesia's native diversity and potential.
Effect of Priming Treatment and Aluminum Stress on Soybean (Glycine max (L.) Merrill) Seeds Viability Hasanatunnisa, Sahla Sania; Zumani, Darul
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.v25i3.9658

Abstract

Soybean (Glycine max (L.) Merrill) is recognized as one of important functional food that contributes significantly to fulfilling the nutritional and dietary needs of the population. However, efforts to increase soybean production are often hindered by problems faced by the plants on suboptimal land, particularly on acidic soils that can induce aluminum stress. Seed priming has been identified as a method to enhance seed quality, as it can improve seed viability and performance under stress conditions. This study aims to determine the interaction effect between priming treatment and aluminum stress on soybean seeds viability. The research was conducted in January 2025 at the Production Laboratory, Faculty of Agriculture, Siliwangi University. This research use a factorial randomized complete block design (RCBD) with three replications. The first factor was seed priming using four different solutions: distilled water, KNO₃, PEG6000, and GA₃. The second factor was aluminum stress using AlCl36H2O consist levels of four concentrations: 0, 121, 242, and 363 ppm. The results showed that interaction effects occurred on germination percentage and vigor index, while no interaction effect on germination speed, radicle length, shoot length, and seedling dry weight. For germination percentage and vigor index parameters, the effects of priming varied depended on the level of aluminum stress. Priming with PEG6000 and GA₃ showed potential in mitigating aluminum stress in soybean and aluminum stress at 242 ppm can still be tolerated by soybean seeds that primed with GA₃.
Indigenous Dairy Product (Palopo): The Potential Utilization as A Carrier for Probiotics in The Development of Functional Foods is A Plausible Prospect Sari, Sri Mutia; Wulandani, Baiq Rani Dewi; Kisworo, Djoko; Pertiwi, Eva Amalia
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.v25i3.9672

Abstract

Palopo is a traditional food typical of West Sumbawa, West Nusa Tenggara Province, made from pure buffalo milk with a characteristic soft texture with the addition of eggplant (Solanum virgianium L) in the coagulation process. The use of probiotics and microorganisms in the milk fermentation process is part of the development of milk-based functional foods. This study aims to determine the microbiological properties of Palopo added with lactic acid bacteria as a functional food to determine the role and impact of microorganisms on the quality of Palopo. LAB viability data were analyzed by analysis of variance (ANOVA) using SAS software. If the treatment had a significant effect, then we continued with Duncan's difference test. The results of analysis of variance showed significant differences in LAB viability in Palopo. The highest number of LAB was found in Palopo, added with Streptococcus thermophilus (ST), with a total of 10,172 Log CFU/ml. Based on Duncan's further test, there was no significant difference in LAB viability in ST against LB and LP. Palopo without the addition of LAB was found to have viable LAB with a total of 2, 623 Log CFU/ml. So that LAB is concluded to be able to significantly improve the quality of Palopo products.
Spesies Diversity of Gastropods in The Bale Mangrove Ecotourism Area, Jerowaru, East Lombok Faradila, Baiq Dian; Al Idrus, Agil; Jamaluddin, Jamaluddin
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.v25i3.9710

Abstract

This study aimed to examine the species diversity of gastropods in the Bale Mangrove Ecotourism Area, Jerowaru, East Lombok. A descriptive-exploratory method was applied using transect-quadrat sampling at three observation stations. At each station, a 100 meter transect line was established, running perpendicular to the coastline. Along each transect, there quadrat plots measuring 5×5 meters were placed alternately at set intervals. Each quadrat was further divided into four sub-quadrants to facilitate detailed recording of individual distribution and abudance. Data were analyzed using the Shannon-Wiener diversity index (H'), evenness index (E), and dominance index (C). The results identified 17 gastropod species from 11 families with a total of 1,194 individuals. The highest diversity was recorded at Station III (H’ = 1.32), while the lowest was found at Station I (H’ = 0.74). Station I also showed the highest dominance index (C = 0.70), indicating strong dominance by Terebralia sulcata. In conclusion, gastropod diversity in the area was categorized as moderate and influenced by environmental factors such as substrate type and pH levels. These findings provide baseline information on the ecological condition of the mangrove ecosystem and highlight the importance of habitat management to support the sustainability of gastropod communities.
Water Content, Physical Quality of Seeds and Post-Harvest Fungal Attacks on Peanuts Miladiarsi, Miladiarsi; Tsaniyah, Barokati; Putri, Riska Awalia; Saputra, Hiksa Maulana; Sianturi, Yosua Pangihutan Pardamean Alextio
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.v25i3.9754

Abstract

The decline in peanut seed quality can result from improper post-harvest handling, including drying, pod peeling, and storage, which can damage the seeds and reduce their quality. Damaged seeds and high water content facilitate fungal growth on peanuts. Maintaining and ensuring peanut quality during market storage is very important. This study aims to examine the relationship between air content, the percentage of damaged seeds, and the percentage of seeds infected by post-harvest fungal species in peanut seeds. The experimental method involved measuring air content with a DELMHORST Model G-7 Moisture Meter. The physical quality of seeds was assessed based on the percentages of intact, wrinkled, and damaged seeds. To determine the percentage of seeds infected with fungi, the direct planting method was used, employing Dichloran 18% Glycerol Agar (DG18+) media. The results indicated that each sample’s air content was within the normal range of 8-9%, but the physical quality of the seeds was 59.7%, associated with fungal attacks by species including Aspergillus flavus, A. niger, A. tamari, Fusarium semitechtum, Mucor sp., Eurotium repens, and E. chevalieri. These findings suggest that air content and seed damage influence fungal diversity, providing valuable insights for maintaining peanut seed quality during the post-harvest process until they reach the market.
Effect of Different Nitrogen Concentrations on the Growth Rate of Caulerpa lentillifera Sea Grapes Amanda, Rofifah Aulia; Mukhlis, Alis; Lumbessy , Salnida Yuniarti
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.v25i3.9755

Abstract

Caulerpa lentillifera is a strategic macroalgae commodity in controlled cultivation that requires nutrient management optimization for maximum productivity. This study evaluated the effect of nitrogen concentration variations (0, 15, 30, 45 ppm) on algae growth parameters in a complete randomized design with three replicates over 15 days (12 experimental units). Data analysis was carried out using One-Way ANOVA (95% confidence level) and Duncan post-hoc test to compare parameters such as absolute and relative biomass, specific growth rate, rate of decline, biomass residue, and chlorophyll-a content. The results showed that the concentration of 45 ppm resulted in the highest absolute biomass (23 g) and optimal relative growth (36.59%), while 30 ppm provided the highest specific growth rate (7.40 %/day) and the lowest specific decline rate (2.3 %/day). Surprisingly, the control (0 ppm) recorded the highest chlorophyll-a (20 μg/g), while at 45 ppm there was a significant decrease (9.67 μg/g). It is concluded that the optimal nitrogen range is 15–30 ppm, as it offers the best balance between productivity and physiological stability. At the applicative level, it is recommended the use of moderate nitrogen concentrations in commercial cultivation of C. lentillifera for economic efficiency without sacrificing biomass quality.
Potential of Endophytic Bacteria as Biocontrol of Colletotrichum coffeanum F.Noack Fungus Causing Anthracnose in Arabica Coffee (Coffea arabica L.) in Vitro Setiawan, Bagus; Warsito, Kabul
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.v25i3.9786

Abstract

Indonesia is the fourth largest coffee producing country in the world. However, Indonesian coffee production has decreased due to disease caused by Colletotrichum coffeanum F.Noack. This research aimed to utilize endophytic bacteria as biocontrol to inhibit growth and development of Colletotrichum coffeanum F.Noack.. The endophytic bacteria used came from the isolation of Arabica coffee plant stems. The isolation results obtained were 5 isolates with different characteristics. Based on the results of the antagonist test, there are 2 out of 5 endophytic isolates that have the potential to inhibit pathogen growth. The results of the largest inhibition zone were 17,18mm in Sp.BS2 and the results of the smallest inhibition zone were 14,98 mm in Sp.BS5. In the growth rate of endophytic bacteria, the largest value is 351 x 1015 in isolate Sp.BS5 in 48 hours and the smallest value is 8 x 105 in isolate Sp.BS5 in 6 hours. In the IAA (Indole Acetic Acid) test results, the largest value is 66.36 ppm in treatment P1J3 (pH 6.5; 72 hours) and the smallest value is 26.89 ppm in treatment P3J3 (pH 7.5; 72 hours). The results of these values indicate that endophytic bacterial isolates from Arabica coffee plant stems have the potential to inhibit the growth of Colletotrichum coffeanum F.Noack.
Estimation of Carbon Stock in Mangrove Seedlings and Sediment in EEA Bagek Kembar, West Lombok Pahrurrozi, Pahrurrozi; Hadiprayitno, Gito; Suyantri, Eni
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.v25i3.9797

Abstract

Mangrove are coastal ecosystems that play a crucial role in maintaining environmental stability, protecting shorelines, and providing essential habitats for diverse species of flora and fauna. Mangrove ecosystems also play a vital role in mitigating climate change by absorbing and storing atmospheric carbon. This study was conducted with the objective of estimate the carbon stock in mangrove seedlings and sediments within the Essential Ecosystem Area (EEA) of Bagek Kembar, Sekotong, West Lombok. Mangrove seedlings sampling was conducted using the destructive (harvesting) method and analyzed in accordance with the Indonesia National Standard (SNI), while mangrove sediments sampling was carried out using a corer and analyzed using the Loss on Ignition (LOI) method. The results showed that natural mangroves had seedlings carbon stock of 3.44 tons C/ha, whereas rehabilitated mangroves had seedlings carbon stock of 2.95 tons C/ha. Carbon stock at sediment in natural mangroves was 591.49 Mg/ha, and for sediments at rehabilitated mangroves was 575.39 Mg/ha. The average seedlings carbon stock in the EEA Bagek Kembar Sekotong West Lombok was 3.19 tons C/ha, while the average sediments carbon stock was 583.41 Mg/ha. These findings highlight the significant carbon storage potential of mangroves ecosystems, particulary in seedlings and sediments. Although mangrove seedling possess relatively small biomass, they make a meaningful contribution to future carbon stock.
Effectiveness of Biolarvicide Extract and Granule Formulation of Cocok Bubu Leaves Against Aedes aegypti Hayati, Mila Nurmala; Khumaisah, Lela Lailatul; Anwar, Devi Indah
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.v25i3.9843

Abstract

Dengue Hemorrhagic Fever (DHF), transmitted by Aedes aegypti, remains a major public health concern. This study aims to evaluate the effectiveness of biolarvicides from methanol and acetone extracts of cocok bubu (Elatostema rostratum) leaves and their granule formulations. Extracts and granules were tested at concentrations of 50, 100, 200, and 400 ppm. Granule preparations met standard criteria, including organoleptic properties, active compound content, and dispersion time. The analysis included LC₅₀ and LT₅₀ determination for both extract types. The acetone extract showed greater larvicidal activity (LC₅₀ = 85.67 ppm; LT₅₀ = 51.1 hours) than the methanol extract (LC₅₀ = 112.854 ppm; LT₅₀ = 51.8 hours), both falling into the moderate-to-high toxicity category. Similarly, the granule formulations showed that acetone-based granules (LC₅₀ = 496.941 ppm; LT₅₀ = 51.1 hours) were more effective than methanol-based granules (LC₅₀ = 528.774 ppm; LT₅₀ = 57.3 hours), with moderate-to-low toxicity. These findings indicate that cocok bubu leaf extracts, particularly acetone-based, have potential as effective plant-derived larvicides. Further development of plant-based larvicides may offer safer alternatives to synthetic larvicides in vector control programs.

Page 207 of 252 | Total Record : 2520

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