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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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Protein-Based Films with Different Glycerol Concentrations: Thickness, Gelation Time and Microstructure Ayunita, Novi; Fahrullah, Fahrullah
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6890

Abstract

Edible films are thin films made of hydrophilic materials such as protein, which function as packaging materials that provide a preservation effect, act as a barrier to oxygen, reduce water evaporation, and improve product appearance. The objective of this study was to ascertain the impact of varying glycerol concentrations on the thickness, gelation time, and microstructure of protein-based films. This study employed a Completely Randomized Design with three treatments and three replicates. The treatments consisted of G1: 1.25 ml glycerol; G2: 1.5 ml; and G3: 1.75 ml. The protein-based film produced thickness values of 0.215-0.288 mm, gelation time of 1380-1381 seconds and uniform microstructure. The glycerol concentration of 1.25 ml produced the most favourable film characteristics, in comparison to other concentrations. These included a thickness value of 0.215 mm, a gelation time of 1380 seconds and a more continuous microstructure, characterised by an even distribution of the main film-forming components.
Dilute Alkali Treatment as an Effective Strategy for Valorizing Young Coconut Coir as Cellulose Source Cahyanti, Margareta Novian; B. K. Wibowo; Y. A. Steefian; D. A. Stefani; D. Anggaran
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6891

Abstract

Optimal utilization of the abundant young coconut coir has not been achieved, and not even an investigation into its potential as a source of cellulose has been conducted. Carbonized biomass and bioethanol are examples of energy carriers that can be produced from the cellulose found in young coconut coir. Additionally, cellulose can be utilized in the process of creating advanced materials like cellulose nanofibers and nanocrystals. In order to obtain cellulose from biomass, a treatment is required. The purpose of this study is to investigate how dilute alkali treatment affects the composition of young coconut coirs. Sodium hydroxide solutions at 1.5 and 3% concentrations were used in the alkaline treatment, which was carried out for one hour at room temperature and then for two hours at 100°C. The biomass-to-sodium hydroxide solution ratio was 1:24. The percentage of yield that is achieved following treatment with diluted alkali varies between 29.70 and 30.28%. Following treatment with 3% sodium hydroxide, the concentration of water-soluble compounds dropped from 45% to 3%. Following sodium hydroxide treatment, there was a decrease in the amounts of hemicellulose and lignin. Following a 3% alkali treatment, the cellulose content increased significantly from 19% to 66%. The significant increase in cellulose content after alkali treatment can be used to choose a treatment for young coconut coir during valorization.
Distribution of Soil Macrofauna Diversity and Abudance Land Used at Moving Agricultura Systems Warmare District, Regency of Manokwari, Province of West Papua Mbusango, Amin; Tola, Kati Syamsudin Kadang; Bachri, Samsul; Ningsi, Ratna
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6892

Abstract

Warmare District, Manokwari Regency, West Papua Province is one of the areas where the people still maintain the shifting cultivation system and it has even become one of the local wisdoms in the area. This research aims to examine the diversity and density of soil macrofauna on shifting cultivation land in the Warmare District, Manokwari Regency. The method used in this research is the direct handsorting method in the field and macrofauna identification using a binocular microscope. Data analysis used in this research was cluster analysis with PAST (Powerful Software for Scientific Data Analysis) software version 3.4 and used the Landmarks 3D PCA test to see the relationship between soil macrofauna diversity and land use types. The research results showed that the highest density and diversity of soil macrofauna was shown by the use of forest land with 38 taxa at a depth of 0-10 cm and 37 taxa at a depth of 10-20 cm. Where the high diversity composition of the Shannon-Weaner index is shown by forest land use with a value of 0.94 and is reinforced by the low Simpson index value of 0.30 for forest land use. This is in line with the results of the PCA analysis which shows that macrofauna forest land is compared with monoculture cultivation land and polyculture cultivation land.
Article Review: Moringa Plant (Moringa oleifera Lamk.) as a New Candidate for Anti-Acne Raissa, Talitha Hasna; Rosmalina, Agriana
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6899

Abstract

Acne is an abnormal skin condition caused by excessive production of oil glands (sebaceous glands), which causes blockage of hair follicle ducts and skin pores. Acne occurs due to various factors, one of which is bacterial infection. The bacteria that cause acne are Propionibacterium acnes, Staphylococcus epidermidis, and Staphylococcus aureus. The moringa plant (Moringa oleifera Lamk.) is also known to have potential antibacterial activity against bacteria that cause acne. This research aims to determine the benefits of moringa plant as a new candidate for anti-acne. This research uses the Systematic Literature Review method by collecting data through databases such as Publish or Perish, PubMed, and Google Scholar. The results of this review article show that Moringa oleifera Lamk. leaf extract has been proven to have potential as a new candidate for anti-acne, which is characterised by the formation of an inhibition zone. Moringa leaf 96% ethanol extract using the well method best inhibits the growth of Propionibacterium acnes bacteria. Moringa leaf 96% ethanol extract using the disc diffusion method is more effective on Staphylococcus aureus bacteria. Moringa leaf 70% ethanol extract using the well method is more effective on Staphylococcus epidermidis bacteria.
Ethnopharmaceutical Study of Plants as an Alternative Treatment Gastritis Baluwarti Society Risma, Nindita Yoan; Saputri, Alip Desi Suyono; Anggraini, Truly Dian
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6904

Abstract

The Baluwarti community is a community that lives around the Surakarta Hadiningrat Palace with consist of princes relatives, courtiers, and ordinary people. Baluwarti community to currently still carrying out traditional medicine traditions by utilizing medicinal plants as a treatment in Baluwarti village, gastritis is included in the category of 15 diseases frequent highs. This research is an ethnopharmaceutical research aimed at to find out the local name of the plant, the part used, the way of processing, the rules usage, and treatment methods used as an alternative treatment of gastritis carried out by the community around the Surakarta Hadiningrat Palace. This research is descriptive research that uses quantitative methods. The analysis parameters used are: Use Value (UV), Informant Consensus Factor (ICF), Fidelity Level (FL), and Plant Part Value (PPV). Sampling technique using snowball sampling through open ended interview with the community around the Surakarta Hadiningrat Palace. Based on results interviews with 17 informants found 13 types of medicinal plants used as alternatives treatment of gastritis includes African plants, neem plants, cassava genderuwo, white turmeric, temulawak, cassava, and ginger are processed by boiling. In addition, breadfruit pace and white duwet that can be eaten immediately. Turmeric by processing is ground and grated, as well as aloe vera that is taken mucus using a spoon. The result of the ICF value obtained disease gastritis with a value of 0.25. Plant species that have the highest UV value with a value 0.647 and the highest FL yield of 64.70% is turmeric (Curcuma longa L.) while the PPV value obtained the use of plant parts that are most often used as medicinal materials traditional is 30% rhizome, 18% leaf, 12% fruit, 12% tuber, and 6% mucus.
Study of Land's Carrying Capacity on The Availability and Need For Staple Foods in The City of Mataram Rusdiani, Rusdiani; Suwardji, Suwardji; Mulyati, Mulyati
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6909

Abstract

Increasing the area of rice fields, harvest area, planting area, rice productivity and rice production can increase the availability of staple foods. This aims of this study 1) to analyze the carrying capacity of agricultural land in supporting food security in Mataram City. 2) to determine the availability and need for staple food (rice) in Mataram City. The research method used quantitative descriptive methods using secondary data from the Central Statistics Agency of City of Mataram and other related agencies in Mataram City in 2023. Data was analysed using land carrying capacity analysis and analysis of the availability and demand for rice in the City of Mataram. The results of the research showed that 1) the carrying capacity of agricultural land in the City of Mataram is 0.0231 or less than 1, meaning that the need for rice in the City of Mataram has not been able to be met from the existing agricultural land area and the current rice production, 2) The availability of rice in the City Mataram in 2023 is 13,510.83 tonnes, while the demand for rice is 67,980.76 tonnes, resulting in a shortage (deficit) of rice demand of 54,469.93 tonnes or a deficit in rice availability of 400%.
Gastropods are faced with potential environmental hazards in Kuala Langsa, Aceh Batubara, Yusraini; Purba, Putri Ayu Anjelica; Dwi Putri Oktavia Sinabariba; Cut Salsabila Meutia Sari; Meli Supiani; Gita Prilien Aibekob
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6910

Abstract

The Kuala Langsa Peninsula is a geographical region that is often developed as a site of habitat. The surrounding nature of Kuala Langsa is an environment of biodiversity that contains gastropods. There are also several mangrove areas throughout Kuala Langsa with certain characteristics, under certain conditions and status, which are ecological or non-ecological conservation. The purpose of this investigation is to determine the level of pollution that occurs in the port of Kuala Langsa by looking at the value of the index of gastropodic diversity. The research uses the quantitative method with the Shannon-Wienner diversity index formula and sampling using the square tranche technique. The results show that diversity from common and detected low quality is based on the total number of species in a community found, as well as very similar types of organisms, resulting in low diversity coefficient values and water quality belonging to moderate pollution. The conclusion is that the total number of gastropods is 1,064 individuals from 9 families and 19 species on the three research locations. It can be concluded that the highest value of the diversity index obtained with the data is at station II, which is 2, whereas the lowest diversity Index value at station III is at 1.86 and is followed by station I at 1.91, as long as from the data the variability index value belongs to the type of moderate polluted waters.
The Effect of Organic Cow Manure Pellets (Bos taurus Linn.) with Additional Moringa Leaf (Moringa oleifera Lam.) on The Growth of Dumbo Catfish Seedlings (Clarias gariepinus Burch.) Prihartini, Ni Luh Wayan Widhi; Razak, Abdul
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6913

Abstract

One of the factors that influences the growth of African catfish is feed. Cow dung and Moringa leaves are one of the ingredients for making organic pellets that can support the growth of catfish. This is because Cow Manure and Moringa Leaves contain quite high levels of protein. This research aims to determine the effect of organic cow dung pellets with the addition of Moringa leaves on the growth of African catfish seedlings. This type of research is an experiment by making organic pellets from cow dung and Moringa leaves with different treatments. The data obtained were analyzed statistically using the ANOVA test via the SPSS 21 application. The results showed that treatments A, B, and K+ were not effective because the growth of African catfish was slow. Treatment C obtained good results with an average fish length of 3,173-4,181 cm and weight of 6-9 grams. Furthermore, the DNMRT test results were 3.926d and 7.6b. Almost approaching the growth of Dumbo K-Catfish. Increase in length of Dumbo K Catfish - 4,705-5,142 cm and weight 8-12 gr. Furthermore, the DNMRT test results were 4.8166e and 10.2c. The composition of 25% Cow Manure and 75% Moringa Leaves in organic pellets can be used as an alternative feed ingredient for Dumbo Catfish. In conclusion, the effectiveness of organic pellets made from Cow Manure and Moringa Leaves is close to chemical pellets.
Comparison of The Relative Brain Sizes and Learning Abilities of Animals of The Rodentia Suripto, Suripto
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6916

Abstract

Animals from the order rodentia are often used as experimental animals to study the fields of biology, medicine and animal husbandry, but are rarely used as objects of study to determine their position in evolutionary development and their role in the surrounding environment. One aspect of animal evolutionary development is learning behavior. Learning behavior in animals, especially those related to intelligence, is correlated with the relative size of the animal's brain. This research has examined the comparison of intelligence levels and relative brain size between animals, especially four species of animals from the Order Rodentia, namely mice (Mus musculus), mice (Rattus assimilis), hamsters (Mesocricetus auratus) and guinea pigs (Cavia porcellus). The learning ability of test animals was measured using the T-Maze procedure according to a complete group randomized experimental design. Data on the learning ability of the test animals were processed using ANOVA Model I and continued with the Orthogonal Contrast Test. The results of the research show that the average learning ability from highest to lowest is possessed by mice, hamsters, guinea pigs and mice. This learning ability data is in sync with data on relative brain size, namely the relative size of the largest brain in mice and the relative size of the smallest brain in mice. The learning ability of mice and rats, which both come from the same family, namely Disciples, is not significantly different from that of hamsters from another family, namely Cricetidae. Rats, mice and hamsters, which all come from the same suborder, namely Myomorpha, have much higher learning abilities compared to guinea pigs which come from another suborder, namely Hystricomorpha.
Analysis of Thickness, WVTR, and Microstructure of Whey-Gelatin Protein Based Film with Variation in Chia Seed (Salvia hispanica L.) Concentration Fitrah, Qifyanti; Fahrullah, Fahrullah
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6919

Abstract

Edible film is a thin film that can be eaten or consumed directly and serves as a barrier to water vapour, light, gas, fat, and other solutes. Edible film has biodegradable properties that reduce environmental damage. The purpose of this study was to determine the effect of chia seed addition with different concentrations on the thickness, water vapour transmission rate (WVTR), and microstructure of protein-whey gelatin-based edible film. The study employed a completely randomized design comprising three treatments and three replicates. The treatments comprised the addition of chia seeds at different concentrations, namely C1 (0.05 ml), C2 (0.10 ml) and C3 (0.15 ml). The collected data were analysed using Analysis of Variance (ANOVA), with significant differences being followed by Duncan Multiple Range Test (DMRT). In addition, microstructure measurements were analysed descriptively. The addition of different concentrations of chia seeds resulted in a significant difference (P < 0.01) in the thickness value of whey-gelatin protein-based edible films, but no difference (P > 0.05) in the WVTR of whey-gelatin protein-based edible films. The study produced edible films with thickness values of 0.294–0.304 mm, WVTR of 4.57–5.41 g/mm²/day. The use of chia seed at a concentration of 0.10 ml produces a film with good thickness and WVTR values in comparison to other treatments. The resulting thickness value is 0.302 mm, while the WVTR is 4.57-5.41 g/mm²/day. Furthermore, the film microstructure is denser and more uniform.

Page 114 of 252 | Total Record : 2520

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