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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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Aklimatization Black Orchid Plantlets (Coelogyne pandurata Lindl.) with Biostimulant Moringa Leaf Extract (Moringa oleifera Lamk.) Rina Karmila; Zulfa Zakiah; Mukarlina
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3593

Abstract

The growth of black orchid plantlets (Coelogyne pandurata Lindl.) are slow at the acclimatization stage. An alternative was used moringa leaf extract (Moringa oleifera Lamk.) as a biostimulant. The aim of this research to find out the effect of giving moringa leaf extract on the growth of black orchid plantlets at the acclimatization stage and to obtain the best concentration and timing of extract to increase the growth of black orchid plantlets. The research used a factorial completely randomized design (FCRD) method with two factors. Factor I is the concentration of the extract which consists of 5 levels, namely 0, 25, 50, 75 and 100 mg/L. Factor II is the application time which consists of 2 levels, namely once a week and every 2 weeks, each treatment is repeated 5 times. The results showed that moringa leaf extract had a significant effect on the mean leaf width and number of plantlet roots of black orchids. Extract concentration of 50 mg/L was the best concentration on the growth of black orchid plantlets with an average leaf width of 0.76 cm and an average root number of 8.2. Recommended for the acclimatization of black orchids to use extract concentration 50 mg/L.
Diversity of Floricultural Crops traded in Langsa City Aceh Indonesia Ekariana S Pandia; Farah Diba Shahra; Zill Sekar Gading Fawwaz Sentosa; Mughnita Ayu
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3602

Abstract

Indonesia is a tropical country that has abundant biodiversity, including floriculture plants. The purpose of this study was to determine the diversity of floricultural plants traded in Langsa City. Determination of the research location by purposive sampling. This research was conducted using survey and interview methods, namely tracing floriculture plant traders in each sub-district of Langsa City. The data obtained were analyzed qualitatively, namely grouping by type (species) and family. The diversity of floricultural plants traded in Langsa City is 234 species belonging to 61 families. In Langsa Baro sub-district there are 109 species and 39 families; Langsa Barat as many as 52 species and 19 families; Langsa Kota as many as 96 species and 37 families; Langsa Lama as many as 26 species and 12 families; Langsa Timur as many as 86 species and 30 families. The Araceae family is the largest family found in all floricultural plants traded in Langsa City, which is as many as 51 species.
Estrogenic Effects of Tapak Dara (Catharantus roseus) Leaf Methanol Extract on The Estrus Cycle of Adult Female Mice (Mus musculus) Balb/C Strain Yunita Fatmala; Mahrus Mahrus; Lalu Zulkifli
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3604

Abstract

Tapak dara plant is a plant that contains several active compounds, such as phenolic acids, flavonoids and alkaloids. The tapak dara plant can act as a sedative, urinary laxative, stop bleeding, and neutralize toxins. In addition, tapak dara leaf extract contains ingredients that can act as antifertilization. This study aimed to determine the effect of methanol extract of tapak dara leaf on the estrus cycle of adult female mice (Mus musculus) Balb/C strain. This research is an experimental research by testing cause and effect. The hypothesis test used in this study was one-way ANOVA and BNT test. The significance value of giving tapak dara leaf methanol extract to female mice showed a significant value so that it can be said that the administration of tapak dara leaf methanol extract caused the estrus cycle of female mice to be longer. The significance value of estrogenic activity in mice shows a significant value of 0.047, so it can be said that estrogen activity also affects the length of the estrus cycle. The results of hypothesis testing using the one-way ANOVA test were significant, so it can be concluded that the methanol extract of tapak dara leaves can cause the estrus cycle of female mice to be longer.
Application of Legume Inoculum (Legin) to The Root Nodules and Peanut (Arachis hypogaea L.) Production on Peat Soil West Kalimantan Anna Rizkia; Riza Linda; Zulfa Zakiah
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3606

Abstract

Peanuts (Arachis hypogaea L.) are food crops that have high economic value because of their nutritional content. One of the factors that affect the low production of peanuts in West Kalimantan is the condition of the soil dominated by peat soil causing soil fertility to be low. Application of Rhizobium or legin is expected to increase the production of peanuts (Arachis hypogaea L.). The purpose of the research was to find out the effect of legin application against the amount of root nodules and the production of peanut plants. The research was conducted from November 2020 to February 2021. This research used a Completely Randomized Design (CRD) consisting of 5 treatments namely control, application of legin 4 g/kg seed, 8 g/kg seed, 12 g/kg seed and 16 g/kg seed. The results showed application of legin has a real influence on the total weight of root nodules, the total number of root nodules, the number of effective root nodules, the number of filling pods, the number of seeds and the weight of seeds, but had no noticeable effect on the time of flowering. Legin application of 12 grams / kg of seeds is the best concentration to increase the production of peanuts grown in west Kalimantan peat soil, because it gives the best results to the number of pods content 11.33 pods, the number of seeds 24.16 seeds and the seed weight 19.73 grams.
Isolation and characterization of indigenous copper resistant bacteria from Yogyakarta tannery factory waste Wahyu Irawati; Polin Parulian Ambarita; Desi L. Sihombing; Vannesa El Shaday Ruth Advenita; Eunike Bunga Marvella
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3621

Abstract

The leather tanning industry is one of the industries that causes environmental damage because one of the processes uses copper to produce products such as bags, jackets, and shoes. Copper bioremediation using indigenous bacteria is an effective solution to the problem of pollution because it utilizes bacteria isolated from the polluted environment. This study aims to isolate and characterize copper-resistant bacteria from the waste of the Yogyakarta Tannery Industry. The medium used was Luria Bertani Agar with the addition of 3 mM CuSO4. The characterization carried out included the characterization of colony and cell morphology such as color, edges, optical appearance, cell shape, and Gram staining. The isolation results obtained eight isolates of copper-resistant bacteria, namely Y1, Y2, Y3, Y4, Y5, Y6, Y7, and Y8. Isolates Y1, Y2, Y3, Y4, Y5, and Y8 were Gram positive bacteria while isolates Y5 and Y6 were Gram negative bacteria. Colonies of isolates Y1, Y3, Y4, Y8 greenish color indicates the accumulation of copper in the cells as a mechanism of resistance. The discovery of isolates of copper-resistant bacteria from samples of the tannery industry waste is a useful study as an initial study to obtain isolates of Indonesian indigenous copper-resistant bacteria to be further developed as a copper bioremediation agent in the treatment of copper waste in the leather tanning industry.
The Estimation of Ketapang (Terminalia catappa Linn.) Tree’s Transpiration Sri Wahyuni; Mar’atul Afidah
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3722

Abstract

Ketapang (Terminalia catappa Linn.) is a coastal tree with a fairly wide distribution area. The utilization of ketapang has not been carried out optimally. Ketapang is only used as a shade tree. For this reason, it is necessary to do a lot of research in exploring the various benefits of ketapang. One of the basic studies to determine the potential of ketapang is to estimate the transpiration of ketapang tree. The results of this study can be used as a basis for the use of ketapang as a tree that has the potential for sustainable environmental management. The purpose of this study was to determine the estimated transpiration of ketapang tree. This research is a qualitative survey research. This research uses purposive sampling technique. The sample in this study is ketapang tree that grows in the FKIP environment of Lancang Kuning University. The research data were analyzed by using the formula for the estimation of the amount of water from transpiration in one tree. The results showed that the estimated transpiration in ketapang tree averaged 17,330 ml within 24 hours. The ketapang tree has an important role in ecological functions, especially in maintaining the water cycle. It is necessary to conduct similar research on other tree species in order to obtain tree species that have the potential to be developed as trees with high ecological functions.
Monascus sp. Pigment Potency as Simple Preservative in Food Ingredients Wahyu Aji Mahardhika; Maulida Aqlinia; Delfiani Anggias Putri; Firda Sri Efendi; Vincentia Fenice Angger Maherani; Sri Listiyowati
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3761

Abstract

Everyday foodstuffs such as tofu, chicken, and fish are ingredients that have a short shelf life if stored outdoors or in the open air. The fungus Monascus sp. is a fungus whose pigment is often used in giving color to food. This study aims to determine the potential of Monascus sp pigment isolated from commercial red rice (Angkak) as a preservative in tofu, chicken, and fish at room temperature. The methods used included isolation of the fungus Monascus sp from commercial red rice (Angkak), macroscopic and microscopic morphological characterization, solid fermentation using rice, harvesting pigments with water solvent, and pigment resistance tests on tofu, chicken meat, and fish. The results obtained from the application of the crude extract of the Monascus sp. pigment in fish survived for two days, chicken meat lasted up to three days, and tofu lasted four days. Each experiment had different results during the organoleptic test and compared to a positive control, namely turmeric, proving that turmeric was still better at resisting food spoilage. This research needs to be investigated further regarding the potential if the pure extract of the Monascus sp pigment is used.
Spawning activity of Oryzias woworae Parenti & Hadiaty 2010 with the Suplementation Spirulina Meal in the Diet Mas Bayu Syamsunarno; Mustahal; Achmad Noer Faqih; Achmad Noerkhaerin Putra; Muh. Herjayanto
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3777

Abstract

Spirulina platensis is a feed additive that can improve the reproductive performance of fish. It has never been given to the endemic fish Oryzias woworae which can lay eggs every day. Therefore, a study was conducted that aims to examine spawning activities related to egg-laying behavior, number of eggs, and egg diameter of O. woworae. The study used a sex ratio of 1♂:1♀ in spawning. The test feeds were commercial feed (Feng Li 1) or 0% without spirulina (treatment A), the addition of spirulina 5% (treatment B), 10% (treatment C), and 20% (treatment D). Observations were made every hour for 6 days. The spawning temperature was controlled at a value of 26.6±0.2°C. The results showed differences in the behavior of O. woworae in releasing eggs on spawning days. Giving spirulina causes the behavior of releasing eggs to occur at intervals of 1-3 hours, while without spirulina, it only occurs 1 hour on spawning days. The highest number of eggs was produced by giving spirulina 20% with a diameter range of 1.35-1.37 mm. The presence of a small egg diameter in the 20% spirulina treatment indicated that an increase in the number of eggs affected the ovaries capacity, so the diameter decreased. However, the average diameter of 20% of spirulina eggs was still the same as without spirulina administration. The stable temperature at 26.6±0.2°C caused the spawning activity of O. woworae to only occur in the morning between 07:00-09:00.
Hibiscus Hibiscus Sheet Mask As A Natural Skin Care Alternative Kristin Sangur; Nata Adinda Br Kaban
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3789

Abstract

Hibiscus sheet mask is a natural skin care solution made from hibiscus flower (Hibiscus rosa-sinensis L.). The purpose of this study was to analyze the physical, chemical, and organoleptic of hibiscus sheet mask as an alternative to natural skin care. This study used a red and layered hibiscus flower crown. Extracts were made using the maceration method. The results of the flower extract are then made in various variations of mask formulas. The Hibiscus sheet mask was then analyzed by 10 panelists for its physical, chemical and organoleptic. The results showed that the higher the concentration of hibiscus flower extract, the more it produced a mask that was red in color, had a hibiscus aroma and a thick texture. The higher the concentration of hibiscus flower extract, the more the mask has a low pH. Meanwhile, the panelists prefer the hibiscus sheet mask with the 75% formula (F3). Thus, the hibiscus sheet mask can be accepted by the panelists.
Isolation of Dunaliella salina Microalgae from Pari Island, Jakarta, Indonesia Andri Hutari; Ranti An Nisaa; Suhendra Suhendra; Husnin Nahry Yarza; Devi Anugrah
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3804

Abstract

Dunaliella salina is a microalga from the Chlorophyta group which is reported to be found in mangrove forests. These microalgae are reported to have economic value as a producer of beta carotene, astaxanthin, and EPA fatty acids. The microalga was isolated from Pari Island, Jakarta. Sampling by streak plate method. This study aimed to obtain Dunaliella salina isolates for further exploration. The results obtained were, that three pure isolates MKA1, MKA2, and MKA3, were successfully purified. The three isolates showed oval-ovoid morphology and orange-pink pigmentation of the culture. Cultivation using seawater, glucose (10 g/L) and yeast extract (3 g/L) produced biomass of about 2.3 g/L and further optimization needs to be explored.

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