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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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Comparison of Antioxidant Activities of Red Pedada (Sonneratia caseolaris L.) Mangrove Forest Area, Jambi Province Sutra, Inada; Yanti, Selvi Purnama; Alvi, Alvi; Ihsan, Mahya; Wahyuni, Fitra
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8554

Abstract

Red pedada (Sonneratia caseolaris L.) is a mangrove plant that is often found in the East Tanjung Jabung Regency, Jambi Province. This plant contains several secondary metabolite compounds including alkaloids, flavonoids, saponins, polyphenols, tannins, triterpenoids and steroids. This study aims to determine the comparison of antioxidant activity contained in extracts of leaves and fruit of red pedada (Sonneratia caseolaris L.). Extraction was carried out using the maceration method using 96% ethanol solvent. The antioxidant activity test was carried out using the DPPH (diphenyl-picrylhydrazyl) method and measured using a UV-Vis spectrophotometer at a wavelength of 517 nm. The results of the phytochemical test of red pedada leaf and fruit extract (Sonneratia caseolaris L.) showed positive results for alkaloid, flavonoid, saponin, polyphenol and tannin compounds. Meanwhile, steroid compounds were only positive in leaves, and triterpenoids only in fruit. The results of the comparison of the antioxidant activity test of red pedada leaf and fruit extracts (Sonneratia caseolaris L.) showed better antioxidant activity in the leaves based on the IC50 value of 14,196 ppm and in the fruit of 24,590 ppm. The conclusion of this research is that red pedada leaf and fruit extract (Sonneratia caseolaris L.) has antioxidant activity very strong category.
Utilization of Plants in Agroforestry at Sungai Buluh LPHN, West Sumatra Putri, Novia Anas; Chairul, Chairul; Solfiyeni, Solfiyeni
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8562

Abstract

Agroforestry is an intensive land management system combining forestry, agricultural, fruit, and medicinal plants to achieve optimal results while ensuring land conservation and local community practices. This research aims to explore the utilization of agroforestry in the LPHN (Nagari Forest Management Institute) Sungai Buluh, Padang Pariaman Regency. The study was conducted from December to February 2024 using the transect method. The results revealed that the community utilizes 25 types of medicinal plants to treat various ailments such as fever, diarrhea, coughs, colds, wounds, digestive issues, and joint pain. The most commonly used plant part is the leaf, due to its practicality and easy accessibility. These medicinal plant uses reflect the community's traditional knowledge passed down through generations. Furthermore, non-timber forest products were categorized into two groups based on their usage: 4 types of food ingredients and 4 types of natural dyes or cooking ingredients. In conclusion, the study highlights the significant role of local agroforestry practices in maintaining health and biodiversity. The implications of this research suggest the need for sustainable agroforestry management to preserve both ecological and cultural values.
Effects of Biological Fertilizer and NPK on Red Chili Growth in Automated Drip Irrigation Systems Ramdan, Adam Wafi; Aisyah, Aisyah; Sugeru, Herik; Asnur, Paranita; Fahnum, Budi Utami
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8566

Abstract

Red chili (Capsicum annuum L.) is crucial for household consumption and the food industry, but its productivity declines due to soil fertility depletion caused by excessive chemical fertilizer use. This study aims to evaluate the effects of combining biological fertilizer and NPK on the growth and yield of red chili plants. A factorial completely randomized design (CRD) experiment with 12 treatment combinations was conducted at the UG Technopark Greenhouse, Cianjur, West Java, from May to August 2023. The first factor was the frequency of biological fertilizer application (none, biweekly, weekly, and twice a week), while the second factor was the NPK fertilizer dosage (none, 50%, and 100% of the recommended dose). The results showed that both fertilizers significantly influenced plant growth and yield, with the optimal treatment being the application of biological fertilizer twice a week combined with 100% of the recommended NPK dosage. A significant interaction between NPK dosage and biological fertilizer frequency was observed, affecting plant performance. These findings highlight the importance of integrating biological fertilizers with NPK to enhance red chili productivity while reducing reliance on chemical inputs, contributing to more sustainable agricultural practices.
Sediment Organic Carbon Stock at the Muara Gembong Mangrove Area of Bekasi, West Jawa Muazzasari, Fitra; Japa, Lalu; Suyantri, Eni
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8568

Abstract

Mangrove ecosystems have a crucial role in absorbing and storing carbon, which contributes to controlling greenhouse gas emissions, especially carbon dioxide (CO₂) as the largest contributor to greenhouse gases. This research aims to measure sediment organic carbon stocks (SOCS) in the Muara Gembong mangrove area, Bekasi, West Java. Sediment samples were taken by purposive sampling from three locations with different mangrove characteristics, namely Station 1, Station 2 and Station 3. Samples were analyzed using the Loss on Ignition (LOI) method to determine the organic carbon content in the sediment. The research results showed that the highest carbon stock 669.95 tonnes/ha was found at Station 1, while the lowest carbon stock 2 501.78 tonnes/ha was at Station. In general, organic carbon content increases in deeper sediment layers. The dominant sediment texture is silty and silty loam, which supports carbon storage capacity. This research highlights the importance of preserving mangrove ecosystems as an effort to mitigate climate change through optimizing carbon storage in mangrove sediments.
Antibacterial Activity Test of Arabic Coffee Leaf Extract (Coffea arabica L.) Against The Bacteri Aeromonas hydrophila Nugraha, Nabilla Argadia; Puteri, Prianti Nurmeilia; Destiana, Anggari Linda; Wahyuni, Fitra
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8570

Abstract

Arabica coffee leaves (Coffea arabica L.) contain compounds known as secondary metabolites that have antibacterial properties, capable of suppressing the growth of Aeromonas hydrophila bacteria. The purpose of this study was to identify phytochemical compounds contained in Arabica coffee leaves (Coffea arabica L.), evaluate the antibacterial effectiveness of these leaves against Aeromonas hydrophila bacteria, and determine the concentration of Arabica coffee leaf extract that is most effective in inhibiting the growth of these bacteria. The method used in this research is the disc diffusion method. The concentrations of Arabica coffee leaf extract used were 25%, 35%, and 45%, and the data were analyzed using Kruskal Wallis test and Dunn's post hoc test. The results showed that the ethanol extract of Arabica coffee leaves had antibacterial activity. At a concentration of 45%, the extract showed an average inhibition zone of 15.95 mm against Aeromonas hydrophila, which is categorized as a very strong inhibition level. The Kruskal Wallis test yielded a significance level of 0.001 (p < 0.005), indicating a significant difference.
The Relantionship Between Gestational Age, Parity, and Compliance with Fe Tablet Consumption with Anaemia in Pregnant Women at Seteluk Health Center in 2024 Andani, Azalia Asri; Wanadiatri, Halia; Karmila, Dany; Sudiarta, I Gede
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8573

Abstract

Anaemia in pregnant women is one of the health problems that can adversely affect the mother and fetus. Factors such as gestational age, parity, and Fe tablet consumption compliance are thought to have an association with the incidence of anaemia in pregnant women. The study aims to determine the relationship between gestational age, parity, and compliance with Fe tablet consumption with the incidence of anemia in pregnant women at the Seteluk Health Center. The research method uses observational analytics with a cross-sectional design. The sampling technique uses purposive sampling. The research sample is 76 samples according to the inclusion and exclusion criteria. Data collection is done through questionnaires and medical records. Data analysis is done using the chi-square statistical test. The results showed that 52.6% of respondents had risky gestational age (≥13-40 weeks) and 47.4% were not at risk (<13 weeks). Risky parity (>2 times) was found in 10.5% of respondents, while 89.5% had non-risky parity (≤2 times). Adherence to Fe tablet consumption was 56.6%, while 43.4% were non-compliant. The results of the chi-square statistical test showed a p value for the association of gestational age with anaemia incidence of 0.004, parity of 0.666, and adherence to Fe tablet consumption of 0.023. Conclusion: Gestational age and Fe consumption compliance were associated with anaemia incidence in Seteluk Health Centre. However, parity is not associated with anaemia among pregnant women in Seteluk Health Centre.
Coral Reef Substrate Coverage in Taka Bonerate National Park Sanova, Aulia Seto Sandhi; Nugroho, Hanityo Adi; Mahardini, Angka; Agus, Elsa Lusia; Rahman, Saleh; Sutanto, Steven; Retawimbi, Aditano Yani
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8575

Abstract

Coral reef monitoring using Reef Check Method has been widely applied for conservation acts due to its handy protocols. This study aims to evaluate the coral reef conditions in the zonal areas of Taka Bonerate National Park by analyzing the substrate composition of its waters. Conducted in November 2023 using the Reef Check method, the research focused on four stations: Tinabo Besar, Tinabo Kecil, Tinanja, and Taka Lasalimu. The substrate composition was categorized into living and non-living substrates at depths of 5 and 10 meters. At 5 meters depth, the highest percentage of living substrate cover, specifically hard coral (HC), was recorded at Tinanja (74%), while the highest non-living substrate cover, dead coral/rubble (RB), was observed at Tinabo Kecil (38%). At 10 meters depth, Tinanja again showed the highest living substrate cover (HC, 40%), whereas Tinabo Kecil had the highest non-living substrate cover (RB, 41%). The findings indicate that the coral reef Substrate in the TBNP zonal area is in good condition, although some locations show damage suspected to be caused by environmentally unfriendly fishing practices. This can serve as a reference for the future management of coral reefs in TNTBR. Further research is needed to comprehensively complete the data on coral reef health, such as data on reef fish and associated invertebrates.
Flavonoid and Alkaloid Content of Red Onion Skin Extract (Allium cepa L.) Windarsih, Yulia; Masrianih; Trianto, Manap
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8578

Abstract

Red onion skin (Allium cepa L.) is often discarded as waste, despite being rich in flavonoids and alkaloids, which possess antioxidant, anti-inflammatory, antimicrobial, and anticancer properties. This study aims to determine the flavonoid and alkaloid content of red onion skin extract using reflux and Soxhlet extraction methods with 96% ethanol as the solvent. The extraction was performed using reflux and Soxhlet techniques, followed by UV-Vis spectrophotometry to quantify flavonoid and alkaloid content. A quercetin standard curve was used to determine flavonoid levels, while a caffeine standard curve was applied for alkaloid content analysis. The Soxhlet method yielded a higher flavonoid content (108.21 mg/g or 10.82%) compared to the reflux method (105.55 mg/g or 10.55%). In contrast, the reflux method resulted in a higher alkaloid content (169.56 mg/g or 16.95%) than Soxhlet extraction (167.0 mg/g or 16.70%). These differences are attributed to the continuous solvent circulation in Soxhlet extraction, which enhances flavonoid solubility, while the lower temperature in the reflux method prevents alkaloid degradation. The findings suggest that Soxhlet extraction is more effective for flavonoid extraction, whereas reflux extraction is better for alkaloid extraction. Given their significant bioactive properties, red onion skin extracts have potential applications in the pharmaceutical, nutraceutical, and food industries. Future research should focus on optimizing extraction techniques and conducting toxicological and pharmacological studies to explore the therapeutic potential of red onion skin extract.
Diversity of Epiphytic Ferns in the Girimanik Natural Forest Area (NFA), Wonogiri Regency, Central Java Anggraeni, Saraswati; Santhyami, Santhyami
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8585

Abstract

The Girimanik Natural Forest Area (NFA) dominated by that has the potential to harbor high biodiversity, but research on this potential is still limited, especially on low-level plants such as epiphytic ferns. This study aims to ascertain the existence and variety of epiphytic ferns in the Girimanik Natural Forest Area (NFA). The data collection strategy employed was an exploratory approach utilizing the Systematic Line Sampling technique. The assessment of fern diversity in the Girimanik Natural Forest Area (NFA) revealed the presence of 18 species across 7 families: Lomariopsidaceae, Aspleniaceae, Polypodiaceae, Davalliaceae, Dryopteridaceae, Hymenophyllaceae, and Nephrolepidaceae. Epiphytic ferns inhabit the surfaces of host trees (phorophytes) and are characterized by rough and aged bark. Davallia denticulata and Davallia solida dominate the distribution of individual epiphytic ferns. Among the 18 species, two epiphytic ferns, Dryopteris arguta and Elaphoglossum blumeanum, are endangered, necessitating intensified conservation efforts to avert extinction. The findings of this study may serve as recommendations for stakeholders involved in conservation initiatives for epiphytic fern species, particularly those that are threatened.
Response of Growth and Yield of Pakcoy Mustard Plants (Brassica rapa L.) to the Application of Growth Regulatory Substances Manu, Charisal Matsen; Bunyani, Nur Aini; Tay, Ratnasari Renggi; Kerihi, Eka Citra Gayatri
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8592

Abstract

Vegetables are a broad category of plant foods that typically have a high water content and can be eaten fresh or cooked or prepared in specific ways. The purpose of this study is to determine the effects of growth regulators on Pak Choy mustard plants as well as the plants' responses to them. Three iterations of the RAL research methodology were conducted. Using a dosage of 200 milliliters of coconut water, 400 milliliters, and 600 milliliters. through the combination of four therapies. The results of the research show that the administration of growth regulators can have a good influence on plant height, number of leaves, leaf area and fresh weight of roots per sample. Suggestion: This research is expected to contribute to a sustainable agricultural system by maximizing the use of environmentally friendly natural growth regulators.

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