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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 2,562 Documents
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Application of Centella asiatica extract as Biostimulant on Growth of Kale (Brassica oleracea var. acephala DC) Sherin Dien Salsabila; Suwirmen Suwirmen; Zozy Aneloi Noli
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4806

Abstract

Research on the effect of pegagan (Centella asiatica) extract as a biostimulant on the growth of kale plants (Brassica oleracea var. acephala DC) was conducted from April 2022 to August 2022 in the Greenhouse and Plant Physiology Laboratory, Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Padang. This study aims to determine the effect of giving Pegagan extract as a biostimulant that can improve the quality of kale plant leaves and the concentration of Pegagan extract that can increase the growth of kale plants. The method used in this research was an experimental method with a Completely Randomized Design (CRD) with five treatments and five replicates. Treatments included the following amounts of Pegagan extract: A. (0 mg/l), B. (12.5 mg/l), C. (25 mg/l), D. (50 mg/l), and E. (100 mg/l). The results showed that several concentrations of Pegagan extract had different effects on chlorophyll a, chlorophyll b, and total chlorophyll of kale plants. However, it did not give different effects on plant growth parameters, namely plant height, number of leaves, root length, wet weight, and dry weight of kale plants. Based on the proximate analysis, the application of Pegagan extract has not been able to influence the quality of the kale plant's water, ash, fat, carbohydrate, and vitamin C. Still, it can affect kale plants' protein and crude fiber content.
Germination Capacity of Helianthus annuus Less Seeds on Soil Media Contaminated by Waste Wahyu Lestari; Sujarwati; Atria Martina; Imelda Wardani; Daryono
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4821

Abstract

Used oil waste is often dumped on the ground around the workshop, causing soil pollution which can reduce the function of the soil. The most difficult contaminants in used oil waste to decompose are hydrocarbon compounds, which are highly toxic, polycyclic aromatic hydrocarbons (PAHs). The concentration of oil hydrocarbon contaminants in a sample is determined by measuring the total petroleum hydrocarbon (TPH) concentration. This study was conducted to determine the germination ability of Helianthus anuus, Less seeds on soil media contaminated with waste oil at different concentrations of Total Petroleum Hydrocarbon (TPH). The results showed that the concentration of TPH in the media could inhibit the speed of seed germination. Treatment with low concentration of TPH 2.7% in the media increased % germination, shoot and root length and sprout biomass compared to the medium/intermediate (8.00%) and high (12.26%) TPH treatments and controls. However, there was no significant difference between all treatments regarding germination time and shoot length, although in the low TPH treatment (2.70%) there was a tendency for germination time to be faster than the other treatments, as well as to shoot length which was longer than the other treatments. The higher TPH concentration in the media can inhibit germination time, germination percentage, shoot and root length and biomass. Morphological observations of the growth of sprouts showed an inhibition of root hair formation along with the high TPH content in the media, but all treatments did not affect the growth of the shoots.
In Vitro Pharmacological Activity Test on Pharmaceutical Biotechnology Products in The Form of Kombucha Bath Soap Pineapple Honey Subang As Antibacterial Gram Positive and Negative Saraswati Prabawardani; M. Fariz Fadillah; Desi Trisnawati; Firman Rezaldi; K Kusumiyati; Irmawati Mathar
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4838

Abstract

One of the probiotic drinks produced by Scoby fermentation, namely Kombucha Honey Pineapple Subang, has been found as a source of gram-positive and gram-negative antibacterials in previous studies. In addition to its significance in the pharmaceutical (cosmetic) industry, Subang pineapple honey-based kombucha has the potential to be utilized as a functional food. Especially useful when making liquid body wash because it stops the growth of the skin-harming bacteria S. aureus, S. epidermidis, P. aeruginosa, and E. coli. The research was conducted with the intention of developing pharmaceutical biotechnology products in the form of liquid bath soap that contained the active ingredients of fermented kombucha solution and pineapple honey in concentrations of 15%, 25%, and 35%, respectively.This research method was a laboratory experiment using four soap-based preparations, including soap made from white sand with a sugar concentration of 15%, 25%, and 35%, a solution of fermented Kombucha Pineapple honey in Subang, and biore for market bath soap. The method used is disc diffusion. One-way ANOVA and post hoc analysis follow-up tests were used for data analysis. The study found that the most effective treatment for gram-positive and gram-negative bacteria was bath soap with a concentration of 35% of the active ingredient, kombucha fermented pineapple honey earring solution. The most recent advancement in preventing gram-positive and gram-negative bacteria from growing is the subject of this study.
Tonicum Activity of Red Ginger (Zingiber officinale var. Rubrum) and Elephant Ginger (Zingiber officinale var.Roscoe) Ethanol Extract in Vivo Sitti Fauziah Noer; Ayu Wandira; Asri Mulya Ashari; Rita Kurnia Apindiati; Gusti Eva Tavita; Sri Zha Zha Dilla
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4703

Abstract

The increase in side effects due to the use of chemical drugs encourages people to return to nature, utilize the plants around them in dealing with health problems. Red ginger (Z. officinale Var Rubrum) and elephant ginger (Z. officinale var Roscoe) have been used empirically in medicine especially to boost immunity. This study aims to determine the tonic activity of the ethanol extract of red ginger and elephant ginger in vivo using the natatary exhaustin method with white rats (Rattus norvegicus) as test animals. The natural fatigue method was based on the resistance of the test animals to swimming in water after being treated with ethanol extract of red ginger and elephant ginger rhizome at a dose of 70 mg/kg body weight, using Na-CMC solution as a blank and caffeine solution as a positive comparison. Based on research data testing the tonic activity of red ginger and elephant ginger extracts in vivo showed that the tonic activity of red ginger ethanol extract with the swimming endurance of the test animals was for 27.72 seconds, longer than the swimming endurance of the treated animals. with elephant ginger ethanol extract which is only 16.46 seconds.
Compatibility Test Consorcium of Thermophilic Bacteria Producing Xylanase Enzym from The Hot Water of Mudiak Sapan (MS18, MSS15, MSS11, MS16) Irdawati; Indrawani Matondang; Linda Advinda; Azwir Anhar; Yusrizal Y
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4761

Abstract

Mudiak Sapan hot spring, South Solok Regency, West Sumatra is one of the hot springs where there are various species of thermophilic bacteria that produce xylanase enzymes. The xylanase enzyme is a group of enzymes that has the ability to hydrolyze xylan (hemicellulose) or polymers into xylose and xylo-oligosaccharides. The purpose of this study was to test the compatibility of bacterial isolates to become a xylanase-producing bacterial consortium. This research is a descriptive research that informs the compatibility of thermophilic bacterial isolates from the Mudiak Sapan hot springs. The method used in this study was disk diffusion, based on the research, it was found that 5 combinations of compatible xylanase enzyme-producing isolates were MS18 x MSS11; MS18 x MSS15; MSS18 x MS16 ; MSS11 x MS16 ; MSS15 x MS16 and 1 combination of incompatible isolates namely MSS11 x MSS15 which had an inhibition zone of 0.645 cm.
Conditions of Seagrass Ecosystems in Gili Sulat Waters, Sambelia District, East Lombok Regency in 2022 Suhaeri Ihwani; Agil Al Idrus; I Gde Mertha
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4785

Abstract

Seagrass has high productivity so it is said to be a complex shallow marine ecosystem. The role of seagrass ecosystems is very important, especially in terms of ecological and economic functions. The purpose of this research is to reveal the existing condition of the seagrass ecosystem. Data collection used the line transect method with a square measuring 1m x 1m. The sampling technique uses a systematic random sampling method. The results of the study obtained 4 species and 2 families, among others: Hyddrocharitaceae including Enhalus acoroides, and Thalassia hemprichii. The Potamogetonaceae family consists of Cymodocea rotundata, and Syringodium isoetifolium. Seagrass species that have a high enough influence on seagrass ecosystems in Gili Sulat waters are Thalassia hemprinchii, with an important value index (INP) of 184.74, a density value of 65.59% (rather dense status), a frequency of 48.21% (wide enough distribution), and 70.84% coverage (rich/healthy status).
Local Food Diversification Development Strategy in West Sumbawa Regency Eko Supriastuti; Anton Anton; Ari Apriani; Fikri Rirahman
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4831

Abstract

A method of food selection known as "food diversification" does not rely solely on one type of food but rather on a variety of food ingredients, starting with production, processing, distribution, and household food consumption. West Sumbawa Regency is a potential area in the development of alternative local food crops to replace rice, such as yam, corn and other tubers. This study aims 1) To determine the factors that influence local food diversification in West Sumbawa Regency 2). Formulate a strategy for developing local food diversification in West Sumbawa Regency. This study employs SWOT analysis in a descriptive manner. Results using the SWOT analysis obtained five strategies, of the five existing strategies three strategies were obtained which were prioritized, namely: 1). maximizing the utilization of land potential and local food consumption habits to support the success of food diversification, 2). Increasing human resources in producing local food variations and increasing the habit of consuming local food in anticipation of the mushrooming of restaurants with modern/imported food, 3). Creating new markets through agro-industry, in the provision of diverse and quality food so as to increase income. The conclusion is that the food diversification strategy was based on internal and external factors by analyzing opportunities, threats, strengths, and weaknesses and generating three prioritized strategies.
Using The Refugia Plant as an Alternative Habitat for Predatory Insects On Potato Plants M. Sarjan; Hery Haryanto; Bambang Supeno; Amrul Jihadi
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4426

Abstract

One of the technological innovations that is very relevant for the implementation of IPM is habitat manipulation using refugia plants to conserve predatory insect. The aim of this study was to determine the effect of different species of Refugia plants on the diversity and species richness of predator on potato plants and their production yields. The research method used was a field experimental method with a randomized block design with 5 treatments of Refugia plant species repeated 3 times. The data were analyzed using analysis of variance (ANOVA) and are further tested by Honest Significant Difference (BNJ) analysis at a significance level of 5 percent. The results showed that nine predatory species were found in refugia and potato plants, namely Crytoleamus montrouzieri, Cocinella transversalis, Coleophora inaequalis, Monocielus sexmaculatus, Axion plagiatum, Coleophora reniplagiata, Illeis koebelei, Mantidae and Formicidae. The insect diversity index (H') of the predators found was rated as moderate for all treatments, ranging from 1.2 to 1.9.
The Comparison of Analytical Methods for Determination of Eugenol Content in Water Soluble Base from Clove Flower (Syzygium aromaticum) Essential Oil Ointment using UV-Vis Spectrophotometry and High Performance Liquid Chromatography Puput Herawati Said Hasan; Nining Sugihartini; Hari Susanti
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4522

Abstract

The eugenol content in clove essential oil can be used as a parameter to determine the chemical stability of clove essential oil ointment. Both UV- Vis and HPLC spectrophotometry methods can be used to determine eugenol levels. However, no studies have compared the two methods. This study aims to find out which analytical method is more valid in determining the eugenol content of clove flower essential oil (Syzygium aromaticum) in water-sea based ointments, between the UV-Vis spectrophotometric method and the HPLC method. The parameters in the validation of the analytical method carried out include parameters of linearity, selectivity, precision, accuracy, limit of detection (LOD) and limit of quantification (LOQ). The results of method validation using UV spectrophotometry showed linearity (R = 0.9998), precision (CV = 0.137%), LOD 0.190 µg/mL, LOQ 0.632µg/mL, accuracy (recovery = 100.05%). Method validation using HPLC produced parameters of linearity (R= 0.998), precision (CV = 0.533%), LOD 0.28 µg/mL, LOQ 0.93 µg/mL, accuracy (recovery = 106.43. Average levels of eugenol in water-soluble base MABC ointment using UV spectrophotometry (% concentration = 2.201 ± 0.037) while using HPLC (% concentration = 3.191 ± 0.023). Both methods met the validation requirements. The assay results using both methods met the requirements according to the Indonesian Pharmacopoeia Edition VI. The two methods did not have a significant difference based on the student test, both in the validation parameters and the results of determining the levels of eugenol.
Inventory of Potentially Allelopathic Plants in Laut Dendang Village and Their Effects on Mustard Greens (Bransica juncea l.) indayana Febriani Tanjung; Ayu Sahara Tumanggor; M Rizki; Nada Thahira; Febry Ramadhani
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4610

Abstract

Allelopathy comes from the Greek words allelon, which means "one another", and pathos, which means "to suffer". This research was conducted in October 2022 in the village of Lau Dendang, Percut Sei Tuan District. The method used is a combined method where direct surveys are carried out first, observations are made using the plot method and later experiments are carried out on other plants. In an inventory of allelopathic plants in Laut Dendang Village, there are several different species, namely Ageratum conyzoides L, Mimosa pudica, Rumohra adiantiformis, Pyrrosia eleagnifolia, Blumea balsamifera, Cyperus haspan, Ludwigia peruviana (L.) H. Hara and Imperata Cyperus rotundus. The most common of Cyperaceae.

Page 64 of 257 | Total Record : 2562

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