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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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Isolation and Molecular Characterization of Brotowali (Tinospora crispa) Rhizosphere Bacteria Producing Siderophore from Dry Lands of Lombok Island Sekar Partiwi; Agil Al Idrus; Lalu Zulkifli; Mahrus; Prapti Sedijani
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.6138

Abstract

In the context of biopesticide development, siderophore-producing rhizosphere bacteria play an important role as potential biological control agents. Siderophores are complex organic compounds produced by microorganisms to bind and take up iron ions (Fe3+) from the surrounding environment. This compound is very important because iron is a nutrient necessary for life for many microorganisms and plants. The aim of this research was to determine the type and ability of bacteria in the rhizosphere of Brotowali (Tinospora crispa) to produce siderophores. The method used in this research is an exploratory descriptive type. The isolation results obtained from the North Lombok area obtained 5 samples with codes B4A1, B6A1, BT61, BT63 and BT83. The results of the bacterial isolate potency test with Media Kings showed that only isolate BT63 showed clear fluorescence when exposed to ultraviolet light. Meanwhile, the Arnow's Assay test showed that only BT63 colonies experienced a color change to pink. The results of the molecular identification of the potential bacteria, namely BT63, using the BLAST method using the GenBank data base at NCBI, show that it is closely related to the species Bacillus thuringiensis strain FDAARGOS 791. The results above show that the rhizobacteria isolated from Brotowali have the potential to be developed as a natural biopesticide that can be applied in the future.
Comparative Study of Cat’s Whiskers Leaves (Orthosiphon stamineus) and Mint Leaves (Mentha arvensis) as Repellent For Houseflies Surahmaida Surahmaida; Cicik Herlina Yulianti
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.6141

Abstract

House flies (Musca domestica) are one of the challenging pests that are difficult to overcome and control. Common control methods usually involve the use of chemical insecticides, but a more environmentally friendly alternative is to use plant-based insecticides with repellent properties. Medicinal plants from the Lamiaceae family are famous for their distinctive aroma and are effective in treating pest problems. This research aims to evaluate the potential of cat's whisker leaves and mint leaves as housefly repellent. The repellency test used cotton impregnated with extract concentrations of 2,000 ppm, 4,000 ppm, 6,000 ppm, 8,000 ppm and 10,000 ppm. Exposure time was 30 minutes and carried out 3 times. The repellency percentage is then calculated. The results of the research showed that at concentrations of 2,000 ppm and 4,000 ppm there were still some flies landing, but at concentrations of 6,000 ppm, 8,000 ppm and 10,000 ppm no flies landed. Strong repulsion was observed at concentrations of 2,000 ppm (86.7% for cat's whisker leaf extract and 82.7% for mint leaf extract) and 4,000 ppm (96% for cat's whisker leaf extract and 88% for mint leaf extract). Both extracts showed very strong repulsion (100%) at concentrations of 6,000, 8,000 and 10,000 ppm. These results show that the higher the concentration, the stronger the repellent effect produced. In conclusion, cat's whiskers and mint leaves have potential as active mosquito repellent ingredients, and this research can be the basis for further development as a pest control method, especially against houseflies.
Identification of Ferns in the Suranadi Nature Tourism Park Area, West Lombok Regency in 2023 Reni Anggraini; Ahmad Raksun; I Gde Mertha
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.6148

Abstract

This research aims to determine the species of ferns (Pteridophytes) and to determine the relationship patterns of ferns (Pteridophytes) in the Suranadi Natural Tourism Park Area, West Lombok Regency. The research was conducted from June to July 2023. This type of research is descriptive research using the roaming method, with a roaming area of 52 Ha. The samples of this research were ferns (Pteridophytes) found at the research location. Data collection techniques are carried out by means of observation, identification and documentation. The results of the research show that in the Suranadi Nature Tourism Park there are 3 orders, 10 families, 16 genera and 33 species of ferns. The fern grouping pattern is depicted in the form of a dendogram, the dendogram was created using the NTSYS application. In this study, the closest level of relationship is species Christella parasitica with species Christella subpubescens namely 94%. Meanwhile, the ferns with the furthest degree of relationship are the species of the family Polypodiaceae and species of the family Thelypteridaceae, with a kinship level of 50%.
Antibacterial Testing of Moringa oleifera L. Fruit Extract Against The Growth of The Bacteria Staphylococcus aureus Anisa Febriani; Agriana Rosmalina Hidayati; Dewi Suryani
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.6149

Abstract

Staphylococcus aureus is one of the pathogenic bacteria that causes infectious diseases in humans. Controlling infections caused by pathogenic bacteria can be done by developing new antibacterial agents derived from natural plant-based medicines. Moringa oleifera L is a medicinal plant used in traditional medicine and has antibacterial activity. This study aims to determine the secondary metabolites content and antibacterial activity of Moringa fruit extract against the growth of Staphylococcus aureus bacteria. Moringa fruit simplicia was dechlorophyllated using n-hexane, then extracted using the sonication method with 70% ethanol solvent. The results of the phytochemical screening were that the ethanol extract of Moringa fruit contained flavonoid, tannin and saponin compounds. The diameter of the inhibition zone at concentrations of 25%, 50% and 75% were 1.17 mm, 2.00 and 6.00 mm respectively. Based on the description above, it can be concluded that Moringa fruit extract has the potential to be an antibacterial agent.
Ethnobotany of Plants as Handicrafts by The Dayak Kerambay Tribe Community in Raut Muara Village Tiara Putri Rahmatika; Syamswisna Syamswisna; Asriah Nurdini Mardiyyaningsih
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.6151

Abstract

Ethnobotany is a depiction of the use of natural plants by local people for various activities such as rituals, handicrafts, food, cosmetics, and medicinal materials. The Dayak Kerambay etnic still uses many plants as handicraft materials. This study aims to determine the types of plants that can be used as handicrafts by the people of Raut Muara Village, Sanggau Regency from the results of ethnobotany. The collection of ethnobotanical results was carried out by triangulation techniques, namely semi-structured interviews, documentation of handicraft plants and observation to the field. From the results of this study, 29 types and 11 families of plants were obtained that have the potential to be handicraft plants and are widely used by the Kerambay dayak tribe community in Raut Muara Village for generations. There are 10 types of rattan plants that are often used by the people of the Kerambay dayak tribe for the needs of life and work activities with the products produced, namely bubu (Ju), takin, penampi', bakul, keranjang and ayakan. The potential use of rattan as a source of income because it has high economic value, such as being used household furniture and completeness of work activities.
Antibacterial Activity of Metanol Extract and n-Butanol Fraction of Euphorbia milii Leaves Against Staphylococcus aureus Dia Ul Aulia; Agriana Rosmalina Hidayati; Dewi Suryani
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.6154

Abstract

Euphorbia milii is a common garden plant and its leaves have antibacterial activity, due to the presence of saponins, flavonoids, and tannins. As there is an increasing antibiotic resistance to Staphylococcus aureus, there is potential for E. milii as a new antibacterial candidate. The purpose of this study was to determine secondary metabolites of saponins, flavonoids, tannins and to determine the antibacterial activity of E. milii leaves in inhibiting the growth of Staphylococcus aureus (in vitro). Simplisia was extracted by sonication method, then fractionated with a separatory funnel. Extracts and fractions were analyzed qualitatively by tube test and thin layer chromatograpy (TLC). The antibacterial activity of methanol extract (320; 160; and 80 mg/ml) and n-butanol fraction (32; 16; and 8 mg/ml) was tested by disc diffusion method. The results of qualitative test showed that the extracts and fractions were positive for saponins, flavonoids, and tannins.  In antibacterial test, extract at a concentration of 320 mg/ml was able to inhibit bacterial growth with moderate activity category (6.5 mm). Extracts at 160 mg/ml and 80 mg/ml, as well as n-butanol fractions at all concentration showed weak antibacterial activity (<5 mm). Theseresult suggest that the extracts and fractions positively contain metabolites of saponins, flavonoids, and tannins. The extracts and fractions were able to inhibit the growth of staphylococcus aureus, but the activity was not greater than the positive control.
The Effectiveness of Taro Compost Fertilizer on Soil pH, Growth and Yield of Pak Choy (Brassica rapa L.) in Tasikmalaya Adinda Putri Amanda; R. Arif Malik Ramadhan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.6155

Abstract

Lack of awereness about the use of agriculture waste in increasing soil fertility leading to high use of inorganic fertilizer. Continuous use of inorganic fertilizer can reduce soil fertility in the future. This research aims to determine the impact of providing taro compost fertilizer on soil pH, growth and yield of pak choy In Tasikmalaya. This research was carried out in experimental field of Agriculture Faculty, Universitas Perjuangan Tasikmalaya from October until November 2023. Experimental design used a randomized block design of one factor with six treatments and three replications. The treatments consist of without taro compost fertilizer, 100, 150, 200, 250 and 300 g/polybag taro compost fertilizer. Reseach results show taro compost fertilizer can increase plant height,  fresh weight of the plant, plant root length,  fresh weight of roots and plant canopy weight. The best treatment was 300 g/polybag with plant height 16,8 cm, fresh weight of plant 55,63 g, plant root length 15,83 cm, fresh weight of roots 8,63 g, and plant canopy weight 47 g compared to control treatment without taro compost fertilizer. However, addition various doses taro compost fertilizer hasn’t effect for soil pH. The conclution of this research is that giving various doses of compost fertilizer can increase the growth and yield of pak choy in Tasikmalaya.
Soil Properties Affecting Mercury (Hg) Adsorption-Desorption: Determine The Extent of Soil Pollution Risk Puji Hapsari Hurum; Suwardji; Taufik Fauzi; A. A. Ketut Sudharmawan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.6157

Abstract

One of the hazardous wastes generated from unlicensed gold mining is mercury. Mercury is a toxic metal that can have a negative impact on the environment such as reducing soil and water quality and disturbing human health. The presence of mercury in the soil is completely controlled by adsorption-desorption of various sorbents. Soil properties greatly affect the adsorption and desorption of mercury in the soil. Because different soil properties will adsorb and desorb mercury in different ways and amounts.  The purpose of writing this article is to review the results of previous research on the adsorption-desorption of mercury in soil so as to determine the extent of the risk of soil and environmental pollution. The method used in this writing is to collect and process data sources from previous research published in scientific articles, books, and discussion results. The results show that soils with high organic matter, iron oxide and clay content can absorb more Hg2+. In addition, lower pH has more hydroxylated surfaces that can adsorb more Hg2+. Irreversibility was found where the amount released or desorbed was less than the adsorption of mercury.
Exploring the Phytochemical and Antioxidant potential of Musa balbisiana Peel Extract Using Biochemical Approach Syamsul Bahri; Raudatul Jannah; Ami Rahmawati; Rizky Jasa Huldin
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.6159

Abstract

Several studies have discussed the benefits peels of Musa balbisiana. This study aims to determine the chemical content in Kepok banana (Musa balbisiana) peel as a natural ingredient. Sample in this study is Kepok banana peel. Sliced peel of Kepok banana were dried by keeping this sample in room temperature for days, grounded using a commercial blender, and passed through a 60 mesh sieve, macerated for 72 hours using 96% ethanol, then filtered and concentrated the sample by using a rotary evaporator. Phytochemical analysis showed that ethanol extract of Kepok banana peel contain tannins, flavanoids, steroids and saponin. Radical scavenging activities (inhibition of DPPH) of the extract showed that ethanol extract of Kepok banana peel has a very strong antioxidant activity, because from a linear regression curve we obtained equation y=1.2597x – 5.7942. By using this equation, IC50 concentration value is 44.29 ppm.
Utilization of Coffee Commodity Agricultural Waste Through Partnership Towards Sustainable Production and Consumption Herlyna Novasari Siahaan; Hendris Syah Putra; M. Fariz Afif Hasibuan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.6161

Abstract

One of the SDGs for the process of coffee production and consumption through partnerships is SDGs 12 and 17. SDGs 12 relates to Responsible consumption and production and SDGs 17 relates to partnerships for the Goals. Efficient management of waste management is an important target for achieving SDGS 12 goals to move towards a more sustainable consumption pattern by 2030. Coffee production is increasing every year accompanied by an increase in coffee consumption and drinking trends around the world. This research was conducted at Satya Terra Bhinneka University by holding a Focus Group Discussion (FGD) by inviting stakeholders consisting from farmers, government, business world and academics. on July 20 2023. The data collection method was carried out using the PRA (Participatory Rural Appraisal) method and analyzed in a descriptive. The research results show that coffee farmers in North Sumatra Province are spread across several districts which produced Arabica and Robusta while the original coffee variety is “Sigarar Utang”. Coffee farmer institutions in North Sumatra are in the form of farmer groups, farmer group associations and farmer cooperatives to managing plantations by implementing agricultural corporations. The use of coffee waste is making compost and liquid organic fertilizer. Coffee waste is also used as a Cascara drink and making coffee ashtrays.

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