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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 2,597 Documents
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Biomechanics of Flexion and Extension Spinal Injury: A Study of AOSpine Thoracolumbar Fracture Type B Zubaedi, Alisha Chaerani; Rachman, Amanda Azkiyah; Hardiant, Excell Defry; Mikailla, Romy Healthy; Priyanto, Bambang
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.10877

Abstract

The thoracolumbar junction is highly vulnerable to injury due to its transitional biomechanics. Flexion-distraction and extension-distraction forces commonly produce AOSpine Type B injuries. To describe the biomechanics of thoracolumbar flexion and extension injuries and summarize AOSpine Type B fracture mechanisms. A narrative literature review was conducted using scientific articles, textbooks, and AOSpine guidelines focusing on thoracolumbar anatomy, biomechanics, and Type B injury mechanisms.  AOSpine Type B injuries result from tension band failure. Flexion-distraction (B1-B2) disrupts posterior structures, whereas extension-distraction (B3) causes anterior tension band failure, often influenced by spinal rigidity or high energy trauma. Understanding biomechanical mechanisms of AOSpine Type B injuries is essential for accurate classification and guiding management decisions.
Growth of Oil Palm Seedlings in Main Nursery with Application Mo Micronutrients and Mycorrhiza on Podzolic Soil Putra, Ilham Mado; Deviona, Deviona; Zul, Delita
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.v25i4a.10878

Abstract

The development of oil palm plants in nurseries is greatly affected by the type of growing medium used. Podzolic soils have many drawbacks, such as excessive acidity, a high level of exchangeable aluminum, low levels of phosphorus, and a low cation exchange capacity. By incorporating molybdenum and mycorrhizae as micronutrients, it is possible to improve the soil's chemical properties and promote better growth in seedlings. This study aimed to determine the effects of Mo and mycorrhiza applications on the growth of oil palm seedlings in the main nursery using podzolic soil as the planting medium. The research was conducted at an independent oil palm nursery in Sungai Kumango Village, Rokan Hulu Regency, Riau Province, using a factorial Completely Randomized Design with two factors: Mo doses (0, 0,3, and 0,6 g.plant⁻¹) and mycorrhiza doses (0, 5, 50, and 75 g.plant⁻¹), producing 12 treatment combinations with three replications each. Data were analyzed using ANOVA followed by the LSD test at a 5% significance level. The results showed that the application of Mo and mycorrhiza improved the chemical properties of podzolic soil, particularly total N, total K, total P, and CEC. However, neither the interaction nor the individual factors had a significant effect on seedling growth parameters, including plant height increment, number of fronds, and bulb diameter. The highest mycorrhizal infection levels were observed with the combination of  Mo 0.6 g.plant⁻¹ and mycorrhiza at 25 g and 75 g.plant⁻¹.
Chemical Characteristics of Snack bar from Grain Germinated Rice Flour with Added Penja Fish Flour Azis, Nur Afni; Safarni, Rizka Aulia; Fathanah, Nurul
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.10883

Abstract

: This study aimed to evaluate the chemical characteristics of snack bars formulated from grain germinated rice flour combined with penja fish (Sicyopterus spp.) flour as a potential local protein rich ingredient. The experiment employed a Completely Randomized Design (CRD) with two formulations: P0 (100% germinated rice flour : 0% penja flour) and P1 (80% germinated rice flour : 20% penja flour). Chemical analyses included moisture content, ash, protein, carbohydrate, and total energy. The results showed that the addition of 20% penja flour significantly affected (p<0.05) all chemical parameters. Treatment P1 exhibited the highest values of ash (1.82%), protein (34.65%), carbohydrate (11.06%), and total energy (437.5 kcal/100 g), while reducing moisture content to 14.51%. The increase in nutritional value was attributed to the high protein content of penja fish and the nutrient contribution from germinated rice flour. These findings indicate that combining germinated rice flour and penja fish flour has strong potential for producing nutrient dense local snack bars.
Article Review: Development of a new type of TB vaccine as a replacement for the BCG vaccine Sutanti, B. Novia Rahmadita; Ramdha, Ika Salsabila; Rizki, Alpha Alfi; Putri, Latifa Rahma; Lestari, Neli Aulia; Syaharani, Ninda; Sunarwidhi, Anggit Listyacahyani
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.10884

Abstract

Tuberculosis (TB) remains a significant global public health threat. The existing BCG vaccine has limited effectiveness, particularly in preventing pulmonary TB in adults. This study aims to review the recent developments in the creation of new TB vaccines as alternatives to BCG. This research employs a systematic review method by collecting articles from the Google Scholar database. Inclusion criteria included articles published between 2014-2024 that are relevant to the development of new TB vaccines. Data analysis was conducted descriptively to identify potential vaccine candidates. Several new TB vaccine candidates have shown promising results, including TAT-Ag85B, MTBVAC, rBCG-LTAK63, and subunit vaccines such as Ag85A and LT70. These vaccines demonstrated increased immune responses and better protection compared to BCG in preclinical trials. Innovative approaches like the use of nanocarriers and prime-boost strategies also show potential in enhancing vaccine efficacy. The development of new TB vaccines indicates significant progress with several potential candidates that could replace or complement the BCG vaccine. However, further research is needed to evaluate the efficacy and safety of these vaccines in clinical trials in humans before they can be widely implemented.
Coffee Agroforestry as an Adaptive Mechanism for Forest Ecosystem Restoration: Integrating Conservation, Climate Mitigation, and Community Empowerment Maulana, Bangkit; Susilowati, Lolita Endang; Suwardji, Suwardji; Mulyati, Mulyati
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.10897

Abstract

Forest degradation and climate change represent some critical challenges threatening global ecosystem sustainability, particularly in tropical regions such as Indonesia. Agroforestry of coffee systems have been identified as an alternative approach capable of integrating biodiversity conservation, carbon sequestration, and improving farmer welfare. This study aims to comprehensively examine the contribution of coffee agroforestry to forest ecosystem restoration through a Systematic Literature Review analyzing of 22 scientific journal articles consisting of 12 Scopus-indexed international journals and 10 SINTA-accredited national journals from 2018-2025. Literature synthesis results indicate that coffee agroforestry systems can store average carbon stocks of 40-190 tons C/ha, enhance biodiversity by supporting regeneration of 90+ native tree species, and reduce erosion risk by 60-70%. Economically, coffee agroforestry contributes significantly to farmer income by 66.6% through product diversification and coffee quality improvement. The implementation of this system has also proven effective in climate change mitigation through microclimate regulation and atmospheric carbon absorption. This study recommends developing integrated policies supporting coffee agroforestry adoption as a sustainable ecosystems restoration strategy, with emphasis on technical assistance, economic incentives, and strengthening farmer institutions.
Phenomenon of Smoking Behavior Among Adolescents Aged 10 to 18 Years in Parongpong District Inkiriwang, Daniel Hasian; Triwahyuni, Palupi
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.10906

Abstract

Smoking habits among adolescents aged 10–18 have reached alarming levels in Indonesia. This study aims to further understand how adolescents develop an addiction and a compulsion to smoke. This study used a qualitative design with a phenomenological approach. Data were analyzed using the phenomenological interpretation method (IPA). The results showed that the primary source of cigarettes predominantly came from peers, followed by family, and a small portion came from personal initiative. Adolescents have basic knowledge about the dangers of smoking, but their knowledge is still limited. Attitudes toward anti-smoking movements tend to be neutral and are not considered important. Smoking behavior in adolescents is largely influenced by peer pressure, curiosity, the search for identity, and the desire for group acceptance. The phenomenon of smoking among adolescents in Parongpong District is influenced not only by health knowledge but also by social, symbolic, family, and adolescent psychosocial development factors. Smoking behavior is more influenced by the social meaning of cigarettes as a symbol of maturity and the process of identity search than by rational knowledge about health risks. Thus, this phenomenon is not only a health behavior, but also a complex social phenomenon.
Utilization of Banana Leaves for Environmentally Friendly Crafts as an Effort to Reduce Organic Waste in Kaujon, Serang, Banten Nabila, Dewi Alimah Alya; Melati, Intan; Salsabilah, Amirah Puti; Azzahra, Fatima; Fitroh, Nur Santika; Fitriana, Desi Eka Nur
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.10451

Abstract

Banana leaching waste is one of the abundant organic waste in Indonesia but has not been used optimally. In fact, this material has the potential to be an economically valuable and environmentally friendly resource. This research aims to find out the form of utilization and treatment techniques of banana peel waste as basic materials for handicrafts and to examine its development potential in improving the welfare of the people in Kaujon, Serang, Banten. The method used is qualitatively descriptive with a purposive sampling approach. Data was collected through interviews, observations, and documentation of banana peelers at the Main Source of Craft Indonesia, then descriptively analyzed. Research results show that craftsmen use two types of banana leaches, namely Pisang Kepok (Musa Paradisiaca Var. Balbisiana colla) and Pisang Klutuk (Musa balbisiana Colla), with kepok types, are more dominant because the fibers are strong and easy to process. The products produced include flower vases, piggy banks, bedclothes, tissue boxes, and flower decorations. This utilization has a positive impact on the economy by increasing the income of craftsmen, as well as on the social by fostering independence and environmental awareness of the community. Banana leaching waste treatment in Kaujon, Serang, Banten is effective in reducing organic waste as well as opening up new economic opportunities, thus contributing to environmental conservation and sustainable development based on local potential.
Enhanced Antihyperglycemic Potential of Rhizophora mucronata Leaf Extract Nanoparticles as a Natural Therapeutic Agent Hartati, Hartati; Hartono, Hartono; Musawira, Musawira; Khalidatunnisa, Besse; Kusdianawati, Kusdianawati; Isma, Auliana Bestray
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.10712

Abstract

Diabetes mellitus is a long-lasting metabolic condition characterized by elevated levels of glucose in the blood. Rhizophora mucronata, a locally abundant mangrove species in Indonesia, has attracted attention for its potential medicinal properties. The limited effectiveness of conventional herbal preparations has prompted the development of mangrove extract nanoparticles to improve the solubility, stability, and bioavailability of active compounds. This study evaluates the phytochemical profile, physicochemical properties, and antihyperglycemic activity of R. mucronata leaf extract nanoparticles. Phytochemical screening identified secondary metabolites including alkaloids, flavonoids, triterpenoids, tannins, and saponins. SEM analysis revealed irregular, agglomerated nanoparticle morphology, and EDS confirmed that carbon and oxygen were the dominant elements. XRD analysis indicated semi-crystalline characteristics, while FTIR detected key functional groups associated with organic compounds. In vivo experiments using alloxan-induced mice showed that treatment with mangrove extract nanoparticles, especially at a 15% concentration, significantly lowered blood glucose levels compared to other treatments. These findings suggest that mangrove leaf extract nanoparticles hold strong promise as an effective and stable natural antihyperglycemic agent.
Isolation of Lactic Acid Bacteria from California Papaya and Antibacterial Activity as a Potential Starter Culture Harmoko, Deni; Suryani, Elsa Mega; Ningrum, Rizka Kusuma
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.10717

Abstract

Papaya fruit has many benefits for body health. Lactic acid bacteria can be used as a starter culture to produce more diverse foods (food diversification) and increase product shelf life. This study was conducted to obtain LAB isolates from California papaya that have potential as starter cultures. The methods in this study include the LAB isolation stage followed by the gram staining process, endospore staining, catalase test, hemolytic test, and antibacterial activity test using S. aurius and E. coli as indicator bacteria. Data were analyzed statistically using one-way ANOVA and Tukey’s post hoc test at 5% of significance level. The total count (TPC) of LAB in California papaya samples was 3.6x105 CFU/mL. The results of LAB isolation from California papaya obtained 14 LAB isolates, after going through the testing and screening stages obtained 8 LAB isolates that could potentially be used as starter culture candidates, namely isolates DPC1, DPC5, DPC6, DPC7, DPC10, DPC11, DPC12, DPC14. Isolate DPC6 is an isolate with the highest antibacterial activity in inhibiting the growth of S. aureus and E. coli bacteria, so it is a potential bacterial candidate that can be used as a starter culture.
Antibacterial Activity of Quinoline Alkaloids from Cinchona ledgeriana Cell Suspension Cultures Againts Staphylococcus aureus and Escherichia coli Hasibuan, Yustiny Andaliza; Ratnadewi, Diah
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.10779

Abstract

Kina (Cinchona ledgeriana) is a member of the Rubiacea family of the genus Cinchona that contains a secondary metabolite called quinoline alkaloid. In vitro cell culture has been shown to produce secondary metabolites, by cultivating cells in a nutrient-rich liquid medium under suitable environmental conditions. The aim of this study was to determine the antibacterial activity of quinoline alkaloids from Kina cell cultures against Escherichia coli and Staphylococcus aureus. Quinoline alkaloid extracted from Kina cell culture was tested for its antibacterial activity using the well methode. Antibacterial tests revealed that quinoline alkaloids produced greater inhibition zone diameters against S. aureus (7.33 mm) and E. coli (1.66 mm) compared to solutions of pure quinine and quinidine. However, the inhibition of quinoline alkaloids against S. aureus and E. coli was still very low because they only had an inhibition zone with a diameter of <10 m.

Page 236 of 260 | Total Record : 2597

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