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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 30 Documents
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Search results for , issue "Vol. 20 No. 3 (2020): September - Desember" : 30 Documents clear
Tenderness and Structure of Chicken Meats with Papaya Extract Immersion (Carica papaya) Bulkaini Bulkaini; B.R.D. Wulandani; I K Sumadi; Twenfosel O. Dami Dato
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2369

Abstract

The egg-laying chicken has a coarse texture with large fiber bonds, so it is classified as tough meat. The level of toughness of the meat can be improved by applying the compression technology using enzyme extracts such as papaya extract. The purpose of this study was to determine the effect of the level of use of papaya extract (Carica papaya) on the tenderness and structure of the rejected laying hens. The research material used was 4.500 g of egg rejected chicken meat and half-cooked papaya fruit extract. Meat tenderness testing is done by the Shear Press method, while observing the meat structure is done by microtechnical methods using binocular and digital microscopes. Data analysis of meat tenderness analysis with analysis of variance based on the Completely Randomized Design (CRD) of Unidirectional pattern with 4 treatments (P1= control, P2= 15%, P3= 30% dan P4= 45%) with 3 replications, while the meat structure was analyzed by calculating the average size of connective tissue and meat fibers in the form of millimicron units (µm). The results showed that soaking papaya meat extract with different concentrations significantly affected (P<0.05) on the tenderness of laying hens. The tenderness of meat indicated by the value of meat breaking was ranges from 0.90 kg/cm2-1.36 kg/cm2. Observation of meat structure shows that the higher the concentration of papaya extract used to soak the meat, the connective tissue narrows and the muscle fibers widen.
Diversity of Medicinal Plants Used by Traditional Healers of Dayak Desa Tribe in the Villages of Kebong and Merpak, Sintang Regency Fathul Yusro; Resky Pranaka; Indah Budiastutik; Yeni Mariani
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2010

Abstract

Dayak Desa is a sub-tribe of a large group of Dayak tribes in West Kalimantan. Within the tribal community, it is estimated that there are still several traditional healers (battra) practicing traditional medicine. This study aims to identify the existence of traditional healers from the Dayak Desa tribe in the villages of Kebong and Merpak, analyze the species of medicinal plants used by traditional healers of Dayak Desa and analyze the similarities/ differences in knowledge of medicinal plants possessed by traditional healers and the general communities in Kelam Permai Sub-district. This study used an in-depth interview method to traditional healers from the Dayak Desa tribe with questionnaire aids, which contains questions related to the species of medicinal plants used in their practice. Data analysis was in the form of many species of medicinal plants used by traditional healers, plant families, habitus and parts of plants used, methods of processing and use, location, and sources of medicinal plants taken. The results showed that in Kebong and Merpak villages, there were still four traditional healers practicing traditional medication and using 59 species of medicinal plants. There are 39 species of plants used by traditional healers and also used by the communities, while 20 species others only used by traditional healers. The highest use is found in the family of Poaceae (5 species), herb habitus (37%), processing method by boiling (30%), and administration method by drinking (29%), and paste (29%), the form of single-use and mixture is quite balanced (49 and 48%). The primary source of obtaining medicinal raw materials comes from the yard (57%), and plant sources come from wild growing (59%). The knowledge of medicinal plants possessed by traditional healers should be continued documented; thus, the diversity of medicinal plants can be preserved for the next generation.
Utilization of Biduri Juice (Calotropis gigantea) in The Process of Buffalo Milk Coagulation on Quality of Soft Cheese Bulkaini Bulkaini; B.R.D. Wulandani; IN.S. Miwada; Twenfosel O. Dami Dato; Liana Dewi
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2247

Abstract

Cheese is a processed product with a basic ingredient in the form of milk which is produced by separating solid substances in milk through a coagulation process. Soft cheese is cheese with a moisture content of 45-80%. Research aims to know the benefits of biduri juice in the manufacture of buffalo milk soft cheese. In an effort to determine the benefits of the biduri juice an experimental method was carried out using a Randomized Block Design (RBD).The study consisted of two groups, namely K1 which was made of cheese using 0.02 ml / 2 liter of rennet milk, while K2 was made of cheese using 0.6 cc/2 liter of biduri sap milk. The cheese produced on K1 and K2 was stored for 0 days, 12 days and 24 days as treatment. The results of the study which consisted of protein, fat and water levels were analyzed using analysis of variance based on a Randomized Block Design (RBD) using the SPSS version 16 program and continued with the Duncant test with a confidence level of 5%. The results showed that the use of biduri juice 0.6 cc/2 liters of milk in cheese making produced cheese with protein content ranging from 22.74-23.85% higher than the use of rennet at 21.99-23.65%. Fat content of cheese with biduri juice coagulation resulted in fat content ranging from 0.59-0.84% lower than using rennet ranging from 0.8-1.04%. The water content of soft cheese coagulated with biduri juice and rennet is still in the normal range of water content set by the United States Department of Agriculture (USDA), which is not more than 80%. Based on the results of the study, it can be concluded that the use of biduri juice at the level of 0.6 cc / 2 liters of fresh buffalo milk in making soft cheese with a storage time of 0 days, 12 days and 24 days, it can produce protein and fat content of soft cheese that meets SNI with water content of cheese according to USDA standards, namely not exceeding 80%.
Utilization of Moringa Seed Flour as a coagulant, palm fiber, and activated charcoal in an effort to improve domestic wastewater Maya Roman; Nur Aini Bunyani; Joritha Naisanu
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2061

Abstract

One local alternative that is available is the use of natural coagulants from the Moringa oleifera L. seed starch plant. Moringa seeds have antimicrobial properties that can reduce substances that should not be present in clean water so that they can purify water for clean water needs. However, the distinctive aroma of moringa is still felt, so it needs to be filtered using coconut shell charcoal and fibers . Research objectives: to determine the characteristics of domestic wastewater (pH, TSS, BOD, oil and fat) and after adding Moringa seeds as a coagulant and coconut shell charcoal and fibers as a filter media . This research was conducted in Nunleu Village-Kupang City and the NTT Provincial Health Laboratory. The method used is experiment and laboratory analysis . Phase I samples were analyzed in the laboratory to determine the characteristics of the initial water. Phase II of water purification experiments with treatment A: coagulant 150 mg / l + 10 cm thick activated charcoal + 10 cm palm thickness. Treatment B: coagulant 150 mg / l + fiber thickness 10 cm + activated charcoal thickness 10 cm. The results showed that the treatments (A and B) could reduce pH, BOD, TSS as well as oil and fat. The pH parameter has decreased tends to be acidic. TSS increased by 58.8% in Treatment (A) , but in treatment (B) there was a decrease of 15%, the TSS content still exceeds the quality standard for domestic waste set by the 2016 Ministerial Regulation, 30 mg/L.The BOD content decreased by 45.2% in treatment A while in treatment B there was a decrease of 58.3% . Furthermore, the oil and fat content was quite low, namely in treatment A there was a decrease of 45.2% while in treatment B there was a decrease of 58.3%.
Ethanol Extract of Pseudo-stem Lemongrass (Cymbopogon citrates) and Basil Leaves (Ocimum sanctum) Increase Bactrocera (Diptera: Tephritidae) Fruit Fly Catches Angelina Putri Ayu Lestari; I Putu Artayasa; Prapti Sedijani
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2070

Abstract

The tropical climate in Indonesia supports the presence of many types of plants that have the potential to produce abundant vegetables and fruit, however the presence of fruit flies is an obstacle to fruit and vegetable productivity. Lemongrass and basil have been studied to contain several compounds that have the potential to control fruit fly attacks. This study aims to determine the effect of the ethanol extract of lemongrass pseudo stem (Cymbopogon citrates) and basil (Ocimum sanctum) leaves on the catch of Bactrocera fruit flies and to determine the concentration of the extract that has the highest number of catches. The method used in sampling was factorial randomized block design (RBD). The ethanol extract of the pseudo-lemongrass, the extract of basil leaves or the mixture of both extract (1:1) that was given at concentrations of 15%, 30% and 45% was dropped onto a piece of cotton and for then be put within a trap before placing on the tree. The cathes obtained from each extract at each concentration were observed if they show a significant difference in the number of fruit fly. Data were tested using analysis of variance (F test) at α = 0.05, followed by the Honest Significant Difference test (HSD). The results showed that the catch obtained from ethanol extract of lemongrass pseudo stem or from basil leaf ectract as well as  from their mixture had a significantly higher number of Bactrocera fruit flies than without using these extracts. The difference in extract concentration did not cause a difference in the ability to attract fruit flies. The conclusion of this study is that there is an effect of the  pseudo stem ethanol extract of lemongrass or basil leaf ectract as well as their mixture on the catch of Bactrocera fruit flies and these extract are recommended as non-synthetic pesticidesalternatives.
Screening and Molecular Identification of Phosphate-Solubilizing Rhizobacteria from Mangrove Ecosystem of the Lombok Island Lalu Zulkifli; Prapti Sedijani; Dewa Ayu Citra Rasmi; Lalu Wira Zain Amrullah
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.1730

Abstract

Phosphate solubilizing rhizobacteria can be used as a component in biofertilizer formulations to increase local and national food production without causing adverse risks to the environment compared to the use of chemical fertilizers. In this regard, screening and identification of phosphate solubilizing bacteria from the rhizosphere of several mangrove species that grow on the coast of Lombok Island has been carried out. The method of isolation used is the Pikovskaya method. Screening and identification activities have obtained 5 isolates of mangrove rhizosphere bacteria (BRM) which are indicated by their ability to form clear zones on Pikovskaya media, namely isolates BRM1 and BRM4 (isolated from the rhizosphere of Avicennia marina), BRM2 and BRM3 (isolated from the rhizosphere of Rhizophora apicullata), BRM5 (isolated from the rhizosphere of R. stylosa). All rhizobacteria isolates were identified as Gram-positive bacteria. Molecular analysis based on the comparison of 16S rRNA gene sequences of isolates with the genome database at GenBank (NCBI) using Mega 10 software, showed that all BRM isolates occupied the same cluster as bacterial species from the Genus Paenibacillus in the dendrogram of the phylogenetic tree, namely Paenibacillus sp. JWLB1 strain, Paenibacillus sp. Strain NO13, P. cineris strain cu1-7, P. favisporus strain CHP14, with genetic distance ranging from 1.3 to 1.4. Many species of the Genus Paenibacillus are currently known to play an important roles as plant growth-promoting bacteria. The BRM isolates obtained in this study can be further developed as a biofertilizer component (inoculant) in saline and dryland agriculture.
Nanoparticle Formula Optimization of Juwet Seeds Extract (Syzygium cumini) using Simplex Lattice Design Method Yohanes Juliantoni; Wahida Hajrin; Windah Anugrah Subaidah
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2124

Abstract

Diabetes is a degenerative disease whose numbers continue to increase from year to year. Treatment with oral antidiabetic drugs can cause harmful side effects for patients. One of the plants that can be used for diabetes therapy is juwet (Syzygium cumini L.). Flavonoid compounds of juwet seed is easily oxidized and hydrolyzed in intestinal fluids with low absorption. This problem can be overcome by forming nanoparticle of juwet seed extract. The aims of this study was to obtain the formula for juwet seed nanoparticles. Nanoparticle of juwet seed extract made by ionic gelation method with chitosan and Na-TPP polymers which are varied. The formula optimization design in this study was determined using a simplex lattice design by 3 variations of materials based on the parameters %entrapment efficiency, %transmittant, particle size, polydisperse index, and zeta potential. The results showed that the yield of duwet seed extract was 7,44%. Juwet seed ethanolic extract contains 3.33 mg of quercetin per 1 g of extract. Based on the desirability value approach, the optimum formula was produced with an extract composition of 1.650 mL; chitosan 0.500 mL; and Na-TPP 0.010 mL can give optimal results with a desirability value of 0.772 which results in the criteria of 63.66% entrapment efficiency; 50.56% transmittant; 615,833nm particle size; 0.620 PDI; and zeta potential of +13.89 mV. Juwet seeds extract can be formulated into the form of nanoparticles. To get better parameters, it is advisable to optimize the mixing time and mixing speed in the ionic gelation method.
The Community of Chlorophyta as Bioindicator of Water Pollution in Pandanduri Dam District of Terara East Lombok Zikriah Zikriah; Imam Bachtiar; Lalu Japa
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2344

Abstract

The Pandanduri Dam has a function as a support for agricultural irrigation water and also supports community activities so that it will affect the quality of its waters. The quality of the water needs to be analyzed because it can affect the aquatic ecosystem. This study aims to determine the level of water pollution in the Pandanduri Dam based on the phytoplankton community from the Chlorophyta Division. This type of research is descriptive exploratory. Sampling was carried out at 5 stations that were haphazardly selected with ecological representativeness consideration. Phytoplankton data were analyzed using the abundance formula, Shannon-Wiener diversity index, PIELOU uniformity index, and Simpson dominance index. The phytoplankton from the Chlorophyta Division found in the Pandanduri Dam were 14 species that are Pediastrum duplex var. Gracillimum, Gonium sp. 1, Gonium sp. 2, Coelastrum reticulatum, Scenedesmus acuminatus, Cosmarium sp., Chlamydomonas nasuta, Chlamydomonas sp., Selenastrum capricornutum, Monoraphidium dybowskii, Monoraphidium contortum, Monoraphidium irregular, Westella botryoides, and Kirchneriella lunaris consisting of 4 orders (Sphaeropleales, Chlorococcales, Chlamydomonadales and Desmidiales) and 10 genera (Pediastrum, Coelastrum, Scenedesmus, Gonium, Cosmarium, Chlamydomonas, Selenastrum, Monoraphidium, Westella, and Kirchneriella). The species diversity index of 2.21 is classified as moderate diversity, the species uniformity index is 0.83 which indicates even species growth, and the species dominance index indicates that no species dominates with a value of 0.12. The level of water pollution in the Pandanduri Dam was found in the moderate pollution category (oligotrophic).
Variety of Tank Colours to Enhance the Colour Quality of Platyfish (Xyphophorus helleri) Ina Oktaviani; Muhammad Junaidi; Bagus Dwi Hari Setyono
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.1630

Abstract

One of the factors that affect the colour quality of the platy fish (Xyphophorus helleri) during cultivation is the environment in bright light conditions, where setting bright light conditions can be done using a tank with a colour that can absorb light. Therefore, a study was conducted to examine the effect of tank colour on improving the colour quality of the platy fish and determining the correct tank colour. This research was conducted with an experimental method using a completely randomized design (CRD) consisting of five treatments repeated three times. The colour treatments of the tanks used were white, black, red, orange and yellow. The parameters observed were the increase in colour, growth in absolute weight and length and survival rate of platy fish. The results showed that the use of different tank colours had a significant effect (p <0.05%) on the improvement of colour quality and growth in absolute weight, and had no significant effect (p> 0.05) on absolute length growth and survival rate. The highest increase in colour quality was in white tanks with brightness values ranging from 13-15% and absolute weight growth ranging from 0.21 to 0.25 g. Therefore, in the cultivation of platy fish, a white tank should be used.
The Value of Habitat Complexity and Diversity of Reef Fish Species in Sangiang Island, Bima Regency, West Nusa Tenggra Rahmat Hidayatullah; Didik Santoso; Abdul Syukur
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2261

Abstract

Coral reef ecosystems in the marine environment have a vital role, especially in providing habitat for the diversity of commercial and non-commercial fish species. This study aims to assess the species richness of coral reef fish based on the complexity of the habitat of Sangiang Island, Bima Regency. The data collection method used Underwater Visual Census on the belt transect, and the habitat complexity value is determined by the chain intercept transect method. Data analysis used Shannon-Wiener Index Diversity (H '), Abundance (Ki), and Habitat complexity (C). Next is a simple regression analysis between habitat complexity as the independent variable and fish abundance as the dependent variable. In this study, 106 species were found and covering 24 families. The three fish families, Pomacentridae, Labridae, and Lutjanidae, are the most dominant of the other families. Meanwhile, the diversity index ranged from 1.874-2.753 with an average value of ± SD 2.35 ± 0.317, and the abundance value ranged from 0.774-2.528 individuals/m2 with an average value of ± SD 1.505 individuals / m2 ± 0.745. Furthermore, the analysis showed that hábitate complexity had a significant effect on fish abundance. The coefficient of determination (R2) of 80% can explain the relationship of habitat complexity to fish abundance in the study location. This study concludes that coral reef habitat complexity is a determining factor for the level of fish diversity and abundance in the study area. Therefore, the protection of coral habitat is a strategy for the protection of coral reef fish resources.

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