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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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Identification of Rice Field Potential Using a Geographic Information System Approach in Sambas Regency Romiyanto, Romiyanto; Agustine, Leony
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11386

Abstract

Sustainable food cropland protection is similar to the system and process of planning and determining, developing, utilizing, guiding, controlling, and supervising sustainable food cropland and its areas. This study aims to determine the distribution and changes in the intended rice fields, especially in Sambas Regency, West Kalimantan Province. The research methodology refers to the Decree of the Director General of Agricultural Infrastructure and Facilities Number 14/KPTS/SR/B/01/2022 concerning Technical Guidelines for Recommendations for Sustainable Food Cropland Protection. The initial stage of implementation is collecting data from relevant agencies, then creating a work map, collecting field data (groundcheck) in the form of open camera photos at 4,213 points. Then, field data processing is carried out and then the preparation of updated raw rice field data. The results of the RPLP2B study in Sambas Regency show that based on the type of irrigation, rice fields in Sambas Regency are identified as technical irrigated rice fields with an area of ± 643.12 ha, non-technical irrigation ± 16,415.69 ha, and non-irrigated rice fields ± 26,976.67 ha, the area of rice fields with IP 100 reaches ± 10,091.15 ha, IP 150 covers an area of ± 5,614.59 ha, IP 200 covers an area of ± 27,943.68 ha, IP 250 covers an area of  ± 50.43 ha, and the area of land with IP 300 covers an area of ± 335.64 ha. The conclusion is that the potential of rice fields in Sambas Regency is as follows: Of the total 43,508.29 ha of raw rice fields, only 93.65% or 40,743.77 ha of rice fields have been identified, the remaining 6.35% consists of others, food fields, built-up areas and water bodies.
Study of the Difference in Biodegradation Rate of LAS (Linear Alkylbenzene Sulfonates) and MES (Methyl Ester Sulfonate) Surfactants by Pseudomonas putida and Bacillus megaterium Dzurrahmi, Baiq Dini Najia; Sedijani, Prapti; Muhlis, Muhlis
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11387

Abstract

Linear Alkylbenzene Sulfonate (LAS) is the most widely used surfactant in industrial detergent formulations, generating waste that poses potential risks to environmental quality and human health. As an environmentally friendly alternative, palm oil–based Methyl Ester Sulfonate (MES) has renewable and biodegradable properties, stability in hard water and high salinity, and a faster degradation rate than LAS. However, direct comparative studies on the biodegradation rates of LAS and MES are still limited. Therefore, this study aimed to compare the biodegradation ability of Pseudomonas putida and Bacillus megaterium toward LAS and MES in vitro using the MBAS method. The experiment employed a Completely Randomized Design with a two-factor factorial arrangement and three replications, resulting in 12 experimental units. Biodegradation rates were determined by measuring surfactant concentrations at days 0, 2, 4, 6, and 8 using UV-Vis spectrophotometry and linear regression analysis. The results showed a decrease in surfactant concentration over time in all treatments. Statistical analysis indicated no significant difference between LAS and MES biodegradation rates, but significant differences between bacterial species and their interaction with surfactant type.
Effect of Isometric Handgrip Exercise on Blood Pressure Reduction in Individuals with Prehypertension and Stage 1 Hypertension Pajukang, Marescha Alehandro L.; Rante, Su Djie To; Hutasoit, Regina Marvina; Tunggal, Deif
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11394

Abstract

Hypertension is a significant worldwide health concern that greatly affects heart-related illnesses and deaths. One recommended method to help lower blood pressure without medication is the isometric handgrip exercise. This research aimed to investigate the impact of isometric handgrip exercise on lowering blood pressure in those with prehypertension and stage 1 hypertension. The study utilized a quasi-experimental design following a two-group pretest–posttest format. The participants included 50 seminarians from Seminari Tinggi St. Mikhael Penfui, Kupang, who were chosen through purposive sampling based on specific inclusion and exclusion criteria. The participants were split into two groups: the intervention group (n = 25) that engaged in isometric handgrip exercises for three minutes daily over five days, and the control group (n = 25) that did not participate in any exercise. The data were evaluated using the Wilcoxon Signed Rank test and the Mann–Whitney test. After five days of exercise, a notable decrease in blood pressure occurred in the intervention group, both for prehypertension (systolic p < 0.001; diastolic p = 0.005) and stage 1 hypertension (systolic p = 0.003; diastolic p = 0.012). No remarkable changes were noted in the control group (p > 0.05). The comparison between the two groups indicated significant differences in blood pressure changes for both categories (p < 0.05). Isometric handgrip training significantly affects reducing blood pressure in individuals with prehypertension and stage one hypertension.
Relationship between Menarche Age and the Incidence of Primary Dysmenorrhea in Christian Junior High School Students of Citra Bangsa Mandiri Kupang City Fallo, Giovani Maria; Ratu, Kristian; Wardani , Nimas Prita R. K.; Nugroho, Teguh Dwi
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11395

Abstract

Primary dysmenorrhea ranks among the most prevalent menstrual issues in teenagers, impacting their everyday life and general well-being. The age at which menstruation begins has frequently been linked to the likelihood of experiencing dysmenorrhea; however, previous studies have produced mixed results. The goal of this research was to examine the connection between the age of menarche and the incidence of primary dysmenorrhea in female students at Kristen Citra Bangsa Mandiri Junior High School in Kupang. This investigation utilized an analytical observational method with a cross-sectional approach. A total of 54 students were chosen using purposive sampling according to specific inclusion and exclusion standards. Menarche age was classified as early (younger than 12 years), normal (12 to 14 years), and late (older than 14 years). The WaLIDD Score was employed to evaluate primary dysmenorrhea. The data were processed using the chi-square test, with a significance threshold set at p<0.05. The findings indicated that 55.6% of female students had a normal age for the start of menstruation, while 44.4% started early. The occurrence of primary dysmenorrhea was found to be 77.8%, with mild cases at 38.9%, moderate cases at 31.5%, and severe cases at 7.4%. Those who did not experience primary dysmenorrhea made up 22.2% of the respondents. The statistical analysis yielded a p=0.90 value. There was no significant link between the age of menarche and the prevalence of primary dysmenorrhea among students at Citra Bangsa Mandiri Christian Junior High School in Kupang City.
Review Article: Drug-Related Problems in Hypertensive Patients in Pharmaceutical Practice Agustiani, Eti; Marasabessy, Keysha Nabilla Putri; Dwiyanti, Dhea Syafitri; Mutthoimah, Ulfatul; Ulya, Tuhfatul
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11407

Abstract

Hypertension is a chronic disease with a high global prevalence and often requires combination therapy, which increases the risk of Drug-Related Problems (DRPs). This review aims to identify the types of DRPs, the most frequently implicated medications, causative factors, and pharmaceutical interventions based on various studies conducted in hypertensive patients. The literature review results indicate that common DRPs include drug interactions, ineffective therapy, the need for additional therapy, adverse drug reactions (ADRs), and inappropriate medication selection. Amlodipine, candesartan, valsartan, beta-blockers, and diuretics are among the medications most frequently associated with DRPs. Polypharmacy, non-adherence, comorbidities, and inadequate monitoring are the main contributing factors. Pharmaceutical interventions such as medication review, therapy monitoring, patient counseling, and adherence to clinical guidelines have been shown to be effective in reducing DRPs. The role of pharmacists is crucial to ensure the safety and effectiveness of hypertension therapy.
Relationship of Physical Activity and Body Mass Index in Employees of UPTD Puskesmas La'o Kelurahan Wali Langke Rembong District Jeo, Ida Flaviana; Lada, Christina Olly; Deo, Dwita Anastasia; Setianingrum, Elizabeth L.S.
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11411

Abstract

Insufficient physical activity is a major risk factor for obesity, which is a global health problem, including in Indonesia. Community health center employees as health workers have a high risk of becoming obese due to a sedentary lifestyle. This study aims to explore the relationship between physical activity and body mass index (BMI) in UPTD employees of La'o Community Health Center, Wali Village, Langke Rembong District. This research uses design cross-sectional with a sample of 54 health center employees selected randomly purposive sampling. Physical activity data was collected using a questionnaire-based questionnaire Metabolic Equivalent of Task (METs), while BMI is calculated from measurements of weight and height. Data analysis was carried out using the Fisher’s Exact test. Respondents with active physical activity mostly had a normal Body Mass Index (BMI), while respondents with inactive physical activity were more likely to have an abnormal BMI. Overall, 63% of respondents had a normal BMI and 37% had an abnormal BMI, with the proportion of active and inactive respondents each being 50%. The findings from the analysis conducted with Fisher's Exact Test indicated a notable connection between exercise and Body Mass Index, with a p-value of less than 0.001. A clear link exists between exercise and BMI among employees at community health centers. Boosting physical activity can serve as a crucial approach to avoid obesity in healthcare workers.
Relationship Between Mothers Knowledge Level and the Timing of Providing Complementary Foods to Infants Aged 6-24 Months in Langa Community Health Center Work Area, Ngada Regency Dika, Maria Faustina Veren; Hutasoit, Regina Marvina; Adang, Gottfrieda P. Taeng-Ob; Wardani, Nimas Prita R. K.
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11416

Abstract

Inappropriate timing of complementary feeding causes nutritional problems and increases the likelihood of malnutrition in the region. Mothers' understanding of complementary feeding is crucial in determining when and how it is introduced. This study aims to explore the relationship between maternal knowledge and the appropriate timing of complementary feeding in the area served by the Langa Community Health Center. This study included a correlational analysis with a cross-sectional approach. Data analysis in this study was conducted using univariate and bivariate approaches (Chi-Square test). The results of the analysis showed that the timing of introducing complementary feeding at six months of age was 64.1%. Meanwhile, maternal knowledge was assessed as being in the good range at 48.5%. The bivariate analysis showed a significant relationship between maternal knowledge level, good or bad, and the timing of introducing complementary feeding. The conclusion is that there is a significant relationship between maternal knowledge level and the timing of introducing complementary feeding in infants aged 6 to 24 months in the Langa Community Health Center area, Ngada Regency.
Various Pharmacological Activities in the Development of Kombucha as A Functional Food Ingredient with Economic Potential: A Literature Review Rezaldi, Firman; Agustina, Nia; Wisnuwardhani, Paramita; Huda, Fahmi Alamil; Suminar, Erni
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11417

Abstract

Kombucha is a fermented beverage produced by a symbiotic culture of bacteria and yeast (SCOBY) and has gained increasing attention as a functional food due to its bioactive compounds. This literature review aims to evaluate the pharmacological activities of kombucha and its potential development as a functional food with economic value. A systematic literature review was conducted using reputable international databases, including Scopus, Web of Science, PubMed, and ScienceDirect, covering publications from 2015 to 2025. The findings indicate that kombucha consistently exhibits antioxidant, antibacterial, anti-inflammatory, antidiabetic, anticancer, and cosmetic-related bioactivities. These effects are influenced by substrate type, fermentation conditions, and microbial composition, which determine the production of organic acids, polyphenols, flavonoids, and postbiotic metabolites. Beyond its health benefits, kombucha contributes significantly to economic development through product diversification, utilization of local resources and agro-industrial by-products, and entrepreneurial opportunities for small and medium enterprises. Nevertheless, challenges related to quality standardization, food safety, and health claim regulations remain critical issues. Overall, kombucha demonstrates strong potential as a functional food and an economically valuable fermented biotechnology product.
Review Article: Analysis of The Food Additive Rhodamine B in Foods Circulated in The Public Kanata, Nur Ramdhani; Putri , Chairatun Hisyani; Agustiani, Eti; Nurain, Siti; Syaharani, Ninda; Sutanti, B. Novia Rahmadita; Putri, Ni Luh Eka Sudiawati; Maulidya, Selvir Anandia Intan
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11418

Abstract

Food safety is very important, especially when it comes to snacks that kids and adults eat a lot of. Rhodamine B is still often used as a food coloring, even though it has been banned because it can cause serious health problems, like liver damage and a higher risk of cancer from long-term exposure. This review seeks to investigate the occurrence of Rhodamine B in diverse food products available in the community and to evaluate the analytical methodologies employed in prior research. The research methodology employed is a literature review of national articles published between 2020 untill 2025, utilizing a literature search via Google Scholar with keywords pertinent to Rhodamine B and food analysis. Data were analyzed descriptively according to sample type and analytical methods, including color reaction tests, wool thread tests, thin layer chromatography (TLC), and UV-Vis spectrophotometry, along with the outcomes of Rhodamine B identification. The findings indicated that Rhodamine B was still present in various food items, particularly traditional red cakes, school snack crackers, unbranded jam, red velvet cakes, and certain steamed cakes. Layer cakes, jelly-based foods, cilok sauce, and shrimp paste, on the other hand, were said to not have Rhodamine B in them. This finding stresses the need for ongoing food monitoring and the use of good analytical methods.
Community Structure of Spider (Araneae) in Kerandangan Nature Park, West Lombok Hidayat, Aswangga Abigail; Artayasa, I Putu; Ilhamdi, Mohammad Liwa
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11424

Abstract

Kerandangan Nature Park is a conservation area with high biodiversity potential, including spiders (Ordo Araneae) which play an important role as natural predators in maintaining ecosystem balance. However, information regarding the structure of the spider community in this area is still limited. This study aims to analyze the structure of the spider community based on species composition, diversity index, evenness, and dominance in Kerandangan Nature Park, West Lombok. This study was conducted in 2025 with two replications in three management blocks, namely intensive use, limited use, and protection. Sampling was carried out using the sweep net method and pitfall traps. Data analysis used the Shannon–Wiener index (H'), evenness index (E'), and Simpson dominance index (D'). The results showed that the spider community consisted of 25 species from seven families. The community composition was dominated by Pardosa pseudoannulata (42.2%), Cytaea haematica (12.64%), and Pardosa lapidicina (8%). The diversity index (H’) ranged from 0.73 to 2.60, the evenness index (E’) from 0.19 to 0.85, and the dominance index (D’) from 0.084 to 0.68. The conclusion is that the spider community structure is in the moderate and relatively stable category, thus supporting ecosystem balance in the area.

Page 252 of 252 | Total Record : 2520

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