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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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Potential Antioxidant Activity of Tropical Brown Macroalgae Turbinaria Ethanol Extract from Kabung Island West Kalimantan Mega Sari Juane Sofiana; Apriansyah Apriansyah; Bambang Kurniadi; Warsidah Warsidah; Rita Kurnia Apindiati; Ikha Safitri; Syarif Irwan Nurdiansyah
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4385

Abstract

Naturally, the human body has tolerance to free radical attacks. However, the natural antioxidant ability will decrease when exposure to free radicals from within and outside the body occurs intensively. Antioxidants play potential preventive role to protect the body from damage associated with oxidative stress by free radicals. One of the potential marine resources used as an antioxidant is macroalgae. Turbinaria is widely distributed in tropical waters of Indonesia, including West Kalimantan. This genus produces secondary metabolites with several biological activities. This genus abundantly grows in Kabung Island. However, it has not been used by the local community, even tends to be considered as a weed that disturbs others marine biota. This study aimed to evaluate the potential antioxidant activity of tropical brown macroalgae Turbinaria ethanol extract from Kabung Island, West Kalimantan. antioxidant activity was evaluated using the DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenger method with UV-vis spectrophotometer. The result showed that the ethanolic extract had a high of potential antioxidant activity which IC50 was 87.31 mg/L and it was classified into strong antioxidant potential.
Proximate and Macro Minerals Content of Gastropods in the Waters of Teluk Cina Lemukutan Island West Kalimantan Warsidah Warsidah; Mega Sari Juane Sofiana; Apriansyah Apriansyah; Lucky Hartanti; Desriani Lestari; Ikha Safitri; Shifa Helena
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4398

Abstract

Lemukutan Island in West Kalimantan has marine natural resources with a high level of diversity such as seagrass, coral reefs, macroalgae, and gastropods. Gastropods are one of the largest Mollusc phylum groups that are abundant in the waters of Lemukutan Island. Several types of gastropods have been reported to have high economic value and high nutritional content as well as macro minerals such as Na, Ca, K, F, and P. Therefore, these biota are more widely used as food. This study aims to analyze the proximate and mineral content of gastropods (Lambis and Monetaria) from the waters of Lemukutan Island. The moisture content and ash content of the sample were determined by the gravimetric method. The results of the study found that macro mineral content was determined in Lambis and Monetaria by Atomic Absorption Spectrophotometer (AAS). The protein content in both types of gastropods is quite high. Monetaria has a higher protein content (63.69%) than Lambis (50.06%). However, the fat content in Lambis is 1.88% and Monetaria is 1.14%. The highest mineral content of these two types of gastropods is iron (Fe). Lambis and Monetaria have Fe content of 0.2762 mg/kg and 0.1818 mg/kg, respectively.
Antioxidant Activity of Crude Protein of Xestospongia Sponge from Spermonde Sulawesi Tahirah Hasan; Mega Sari Juane Sofiana; Apriansyah; Lucky Hartanti; Desriani Lestari; Ikha Safitri; Syarif Irwan Nurdiansyah
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4402

Abstract

Xestospongia sp. is a barrel sponge belonging to the phylum porifera of the class Demospongia. This sponge abundant in coral reefs ecosystem. It is a filter feeder where the filtering of nutrients available in the environment occurs in the pores along the body. Various microorganisms in the seawater were exposed to sponges, so that they can produce various biological activities. This study aims to determine the antioxidant activity of crude protein from sponge Xestospongia sp from Spermonde waters of Sulawesi Island. The protein of the sponge was extracted using ammonium sulfate. Then, the protein was determined by the Lowry method in each fraction. Furthermore, the antioxidant activity was carried out by the DPPH method. The crude protein extracts in various fractions produced intermediate antioxidant activity produced from each fraction. They are fraction 1 (0-30%) of 81.31 ppm, fraction 2 (30-60%) was 180.22 ppm, and fraction 3 (60–90%) was 93.97 ppm, while crude protein was 128.33 ppm.The ascorbic acid as a positive control has antioxidant 2.98 ppm.
Analysis of Lead (Pb) Heavy Metal Content in Tengkuyung Snail (Cerithidea obtuse) and Sediment in the Kuala Mangrove Area of Singkawang City Rafdinal Rafdinal; Riza Linda; Gusti eva Tavita; Bambang Kurniadi; Anthoni B Aritonang
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4403

Abstract

Tengkuyung (Cerithidea obtuse) is one of the many snails that live in mangrove areas, being a source of food and the economy, especially for people in coastal areas. Land and sea development and transportation activities have the potential to become a source of Pb contamination in tengkuyung and its environment. This study aims to determine the concentration of lead metal (Pb) in sediments and tengkuyung in the Kuala mangrove area of Singkawang City. Sampling was carried out at two station points. Measurement of heavy metal lead (Pb) in sediments and tengkuyung was carried out using atomic absorption spectrophotometry (SAA) method. The results showed that the content of lead (Pb) in the sediment and tengkuyung at station 1 was 0.0914 µg/g and <0.0070 (µg/g), while at station 2 it was 0.3927 µg/g and <0.0070 (µg/g). The content of Pb metal in tengkuyung meat still meets the eligibility for consumption because it is below the threshold according to SNI no. 7387 in 2009, which is 0.5 mg/kg (0.5 ppm).
Analysis of Agricultural Input Resources on Chopped Tobacco Production of Reket and Seram Varieties in Suralaga District East Lombok Regency Dudi Septiadi; Muhammad Nursan; Aeko Fria Utama FR; Pande Komang Suparyana; Baiq Saopi Nadiawati
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4414

Abstract

Tobacco is a leading commodity that has high economic value. The tobacco products industry has a major contribution to the structure of state revenues through excise taxes, employment and sources of farmers' income. This research aims to; 1) explain the relevance of the characteristics of farmers and the production of chopped tobacco in Suralaga sub-district, East Lombok Regency; 2) analyze the influence of farming input resources on the production of reket and seram tobacco varieties in Suralaga District, East Lombok Regency. The research was conducted in Suralaga District, East Lombok Regency. The study was conducted from July 2021 - November 2021. The sampling method used purposive sampling as many as 40 farmer respondents who run tobacco farming. The data analysis method used in this research is quantitative analysis with multiple linear regression approaches. The results of the research show that the agricultural input resource variables that affect the production of tobacco farming are tobacco farming land variables, pesticides, labour, farming experience, and age. While the dummy variables in this study, namely the gender and variety types were also stated as variables that had an effect on tobacco production.
Analysis of Different Volume of Production of Shrimps, Milk Fishes and Seaweeds in The Province of West NusaTenggara And East Nusa Tenggara Nuri Muahiddah; Anna Apriana Hidayanti
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4415

Abstract

The production of shrimp, milkfish and seaweed farming is able to contribute to food sources in Indonesia, especially in the province West Nusa Tenggara (NTB) and East Nusa Tenggara (NTT) areas. This study aims to determine the differences in the volume of production of shrimp, milkfish and seaweed in NTB and NTT in the last decade.This study use t test.  The results of this study were accepts H1 that is there is a significant difference between the volume of shrimp production in NTB and NTT, for the results of the test the different volumes of seaweed production The result obtained is a significance value of 0.004 which is smaller so that it accepts H1 i.e. there is a significant difference between the production volume in the provinces of NTB and NTT, and the last one for the results of the different test results in the volume of milkfish production, the significance value of 0.06 is greater than 0.05, which means that it accepts Ho, there is no significant difference between the volume of milkfish production in the provinces of NTB and NTT. In this study, there was a significant difference in the volume of production of shrimp and seaweed between the provinces of NTB and NTT, so that areas with lower provincial average volumes were able to participate in the management of shrimp and seaweed cultivation in the aquaculture development process from the perspective of natural resources and human resources.
Farmers Respons to Garlic Development On Upland Program in East Lombok Regency Idiatul Fitri Danasari; Ni Made Wirastika Sari; Rifani Nur Sindy Setiawan
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4420

Abstract

East Lombok Regency is one of locations that designated as the location for garlic development in Indonesia. The potential for garlic development is supported by the availability of land scattered in a number of sub-districts in East Lombok Regency such as Sembalun District, Suela District, Wanasaba District, and several other buffer districts. Seeing this potential, through The Development of Integrated Farming System in Upland Areas (Upland)’s Program, the Government of East Lombok Regency focuses on developing garlic. The purpose of this study was to determine the characteristics and responses of garlic farmers to the Upland Program in East Lombok Regency. The research was conducted by quantitative descriptive method with survey and interview. The selection of respondents used a purposive sampling technique on farmers who received and implemented the Upland Program in 2021-2022. Method of data analysis using multiple linear regression test. The results showed that the response of farmers was very high in garlic development activities in the Upland Program in East Lombok Regency. There are several variables that have a positive and significant effect on farmer responses, namely income (X3), land area (X4), and farming experience (X5). Meanwhile, age and education variables have no significant effect on farmers' responses.
Genetic Diversity of Red Rice (Oryza Sativa L.) Population M2 Results of G16 Rice Genotype Mutations with 200gy and 300gy Gamma Ray Iradiation A A K Sudharmawan; I G P M Aryana; Ni Wayan Sri Suliartini; Sofian Aji Purnama
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4425

Abstract

Mutational breeding can be used to obtain superior varieties by improving some of the desired traits, without changing most of the good traits. The purpose of this study was to determine the genetic diversity of brown rice through segregation of traits in rice mutants due to gamma ray irradiation at doses of 200 gy and 300 gy. The method used is an experimental method carried out from May to September 2021 with a single plant. The distribution of the data was tested by the Kolmogorov-Smirnov test using software and the segregation ratio suitability test using the Chi-Square method with a 5% significance level. The results showed that the data distribution was normally distributed, meaning that it was controlled by many genes (polygenic). on the quantitative trait whose data distribution is not normally distributed, it indicates that the trait is controlled by simplegenic. The results of the Mendel's ratio suitability test using Chi-Square for quantitative traits that follow the Mendelian ratio, which shows a segregation ratio of 9: 7 (double recessive epistasis) where the same phenotype is produced by both homozygous recessive genotypes and two recessive genes are epistatic to the dominant allele. For traits that do not follow the Mendelian ratio or their modifications, it is assumed that they are controlled by many genes (minor genes) so that individual effects are difficult to distinguish.
Isolate and Characterization of Lactic Acid Bacteria (LAB) in Local Nira as Probiotic Starter Candidates Aini Aini; Jumari Ustiawaty; Edy Kurniawan; Alfin Maulana
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4429

Abstract

Probiotics are dietary supplements that contain lactic acid bacteria (BAL), which are capable of converting sugars (including lactose). Probiotics are used in the prevention of infectious diseases. Nira is often used as an ingredient to make alcoholic beverages (tuak) and sugar, but it has not been able to increase the economic value of sap water. The purpose of this study was to isolate lactic acid bacteria in sap as a probiotic candidate. The method in this study was carried out by isolating lactic acid bacteria in sap with a dilution series of 10-0, 10-1, 10-2, 10-3, 10-4, 10-5, and 10-6, then pipetting 1 ml into a cup petri dish and incubating in an anaerobic jar equipped with Anaerocult for 2 x 24 hours. Then macroscopic and microscopic observations were made and sugar and catalase tests were carried out to determine the type of bacteria found. The results of the isolation and characterization of bacteria in the sap were found to be 4 isolates, namely isolate 1A, which is Bacillus coagulans bacteria. Isolate 1B was a Bacillus licheniformis bacteria. Isolates 2A and 2B are bacteria from the genus Lactobacillussp.
Phytochemical Testing and In Vitro Anti-inflammatory Activity on Ethanol Extract of Akar Kuning (Arcangelisia flava L) Stems from West Kalimantan Gusti Eva Tavita; Desriani Lestari; Riza Linda; Rita Kurnia Apindiati; Rafdinal Rafdinal
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
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.v22i4.4431

Abstract

The akar kuning plant (Arcangelisia flava L) from the Menispermaceae family is one of the Bajakah plant groups, which propagate among large trees and are commonly found in tropical forests in the West Kalimantan region. The purpose of this study was to determine the phytochemical compound and activity of anti-inflammatory from the akar kuning stem ethanol extract through the stabilization ability of the human red blood cell membrane (HRBC) in vitro. The akar kuning plant was taken from the forest of the Kapuas Hulu region, dried and mashed first and then extracted by maceration using the organic solvent ethanol. The ethanol extract obtained was concentrated using a rotary evaporatory, then a sample solution of akar kuning ethanol extract was made at several concentrations. Based on the results of phytochemical testing, this plant contained flavonoids, tannins, alkaloids and saponins. Anti-inflammatory activity testing using rabbit blood and using diclofenac sodium as a positive control. The measurement results showed the anti-inflammatory activity of the ethanol extract of the yellow root plant at concentrations of 50, 100, 150, 200 and 250 mg/mL were 28.77, 39.45, 57.53, , 62.80 and 75.50%, while the percentage of HRBC stabilization of the positive control was at the same concentration were 34.55, 46.34., 56.56, 69.88 and 87.33%.

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