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Bioscientist : Jurnal Ilmiah Biologi
Published by Universitas Pendidikan Mandalika
ISSN : 23385006     EISSN : 26544571     DOI : https://doi.org/10.33394
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences
Bioscientist : Jurnal Ilmiah Biologi (BJIB), receiving and publishing article in the form of research (scientific article) in the field of biology education and utilization of biological research in learning. Moreover, this journal bridges the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of biology research and teaching. Through the coverage of policy and curriculum developments, the latest results of research into the teaching, learning and assessment of biology are brought to the fore. Special emphasize are as follow: 1. Research on Learning Biology (Biology Learning Materials at All Education Levels). 2. Pure Research of Biology Developed or Studied to the Sources, Materials, or Instructional Media Biology (Biology Learning Materials at All Education Levels and Application in Society). 3. Curriculum of Biology Education at all Education Levels. 4. Class Action Research (CAR) and Lesson Study in Biology. 5. Other Qualitative Research of Biology Education. 6. The School Management and Biology/Science Laboratory Management. 7. Biology Learning Evaluation. 8. Teacher Professional Issues/Trends in Biology Education. 9. Another Study for the Scope of Biology Education. 10. Research on Environmental Education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 1,439 Documents
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Aktivitas Antibakteri Kombinasi Ekstrak Bawang Putih (Allium Sativum L.) dan Ekstrak Kunyit (Curcuma Longa L.) Terhadap Propionibacterium acnes Aruan, Maroloan; Ayuningtyas, Nurista Dida; Ismena, Arnita Vania Naomi
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14646

Abstract

This study aims to see the antibacterial activity of ethanol extracts of garlic and turmeric in single and combination against Propionibacterium acnes. This type of research is an experimental study, which involves testing the antibacterial activity of ethanol extracts of garlic and turmeric, both singly and in combination, against Propionibacterium acnes bacteria. The research process included extraction, antibacterial activity testing using the pitting method, and data analysis to see significant differences between treatment groups. Garlic bulbs and turmeric rhizomes were macerated with 70% ethanol solvent and tested for antibacterial activity on each of the ethanol extracts of garlic (5%; 7.5%; 10%) and turmeric (2.5%; 5%; 7.5%) as well as the concentration of Garlic:Turmeric Extract Combination (5%:2.5%; 7.5%:2.5%; 5%:5%; 7.5%:5%). The results showed that (1) the results of antibacterial activity of ethanol extract of garlic were 8.20 ± 0.08; 9 ± 0.26; 10.43 ± 0.25 mm (included in the moderate category); (2) the results of antibacterial activity of turmeric extract were 3.19 ± 0.23; 3.56 ± 0.35; 4.43 ± 0.52 mm (included in the weak category), respectively; (3) the results of antibacterial activity on the combination of extracts 2.86 ± 0.72; 3.64 ± 0.08; 4.42 ± 0.16; 5.31 ± 0.76 mm (included in the weak category); (4) the results of data analysis obtained are that there are significant differences in antibacterial activity between treatment groups. 
Pengaruh Konsentrasi Gelatin dan Karagenan Terhadap Karakteristik Fisik, Kimia dan Organoleptik Pada Velva Jambu Biji Septiandhani, Anugraheni; Herawati, Maria Marina
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14650

Abstract

This research aims to determie the effects of gelatin and carrageenan concentrations on the quality of red guava velva based on physical, chemical, and organoleptic properties, and to find the best concentration of gelatin or carrageenan on the quality in red guava velva based on physical, chemical, and organoleptic properties. This research used a non-factorial Randomized Block Design (RBD) technique by varying the concentration of gelatin and carrageenan used in guava velva. Data analysis of test results was tested using analysis of variance ANOVA (Analysis of Variance) test with a significance level of 5%, if it was significant then a further test was carried out using the Duncan Multiple Range Test (DMRT). The research results showed that (1) the best treatment for physical characteristics was Carrageenan 0.75% which had the highest overrun value of 15.5%; total dissolved solids 19.5 brix; melting power 21.61 minutes and viscosity 3698.25cP; (2) The best treatment for chemical characteristics is 0.50% Gelatin treatment, namely 186.30; (3) The best organoleptic test results were that 0.75% Carrageenan produced a soft and smooth texture that was liked by the panelists.
Frekuensi Kehadiran Arthropoda pada Media Dekomposisi Pelepah Nipah (Nypa fruticans) di Kawasan Mangrove Sungai Kakap Kalimantan Barat Mulyani, Lastyanti; Junardi, Junardi; Kurniatuhadi, Rikhsan
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 2 (2025): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i2.14651

Abstract

This study aimed to determine the frequency of Arthropod occurrence at each stage of decomposition and to assess its relationship with environmental parameters in the mangrove area of Sungai Kakap. Arthropod sampling was conducted using the hand-collecting method on days 15, 25, 35, and 45 after substrate placement. A total of 24 fronds were randomly positioned vertically at a depth of 20 cm below the soil surface, with six replication across four time-based observation points. Arthropod eggs, larvae, pupae, and imago were collected, sorted, and preserved in 70% alcohol. Specimens were identified directly through morphological observation, and the data obtained were analyzed descriptively. The results showed that the Relative Frequency (RF) of Arthropods consisted of 34 genera, dominated by Amphipoda (Allorchestoides: 75% FR) and Diptera (Bactrocera: 75% FR; Eristalinus: 100% FR; Psychoda: 100% FR). An RF of 100% indicates that these genera were consistently present across all observation points and time periods, suggesting their potentially important role in the decomposition process. Variations in Arthropod presence among genera reflect changes in composition at each decomposition stage. These changes were influenced by environmental conditions, particularly salinity, pH, temperature, as well as organic carbon and nitrogen levels. These findings indicate that certain Arthropods have the potential to serve as biological indicators of decomposition stages in mangrove ecosystems. Further research is recommended to investigate microbial dynamics and changes in organic content throughout the decomposition process.
Diversity and Potential Active Compound of the Sponge-Associated Bacteria from Lemukutan Island, West Kalimantan Indonesia as New Type of Antibiotics Baihaqi, M. Fikri; Nabila, Faika; Triwahyuni, Adelia; Fahira, Annisa Nasywa; Khairillah, Yuyun Nisaul
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 2 (2025): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i2.14660

Abstract

This study aims to determine the diversity of sponge symbiont bacteria and the effectiveness of active compounds of bacteria that are symbiotic with marine sponges from Lemukutan Island waters. The methods in this study are isolation of sponge symbiont bacteria, characterization of sponge symbiont bacteria, antagonistic tests, activity tests of the best sponge symbiont bacterial isolate extract culture filtrate, and GCMS/MS tests. The results showed that nineteen isolates of sponge symbiont bacteria were successfully isolated from sponge types from Theonella cylindrica and Hyattella intestinalis sponges in Lemukutan waters. Seven isolates of sponge symbiont bacteria are included in the Gram-positive bacteria genre. While the other twelve are included in Gram-negative bacteria. Ten of the nineteen isolates of sponge symbiont bacteria have antibacterial activity for S. aureus. Isolate Sp4 10-6 B, based on the results of antagonistic tests, has an inhibition diameter of 10.28 mm, which is categorized as solid inhibition. Ethyl acetate extract of Sp4 10-6 culture filtrate has a minimum inhibitory concentration value of 0.5% against pathogenic bacteria S.aureus. The active compound with the potential for antibiotic development is the Tetradecane compound, which has the highest peak area of the eight other types of compounds. This shows that the concentration of the compound contained is higher than the other compounds. This compound is included in the aliphatic hydrocarbon and alkane groups.
Length-Weight Relationship and Condition Factors of Tenualosailisha During Spawning Season in Labuhanbatu Estuary Ariani, Fristi; Machrizal, Rusdi; Harahap, Ilham Hakiki
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14718

Abstract

The main objective of the study on Tenualosa ilisha was to analyze the length-weight relationship and condition factors of this species during the peak spawning period in the Bilah Rivers, located in Labuhanbatu Regency, North Sumatra. The study was conducted during the peak spawning period of Tenualosa ilisha, which was recorded to occur from February to April at two main sites Bilah River. The study used exploratory methods, which involved visual and physical observations of fish and their environment. The analysis conducted was the biological aspects of the fish length-weight relationship using the linear allometric model (LAM), while the ecological aspects measured were condition factors using the K Fulton equation and the relative weight equation (Wr). The results of the study the coefficient value (b) was determined to be 1.3181 for males and 1.4617 for females, the value of the condition factor for males (K) was 1.372, and for females (K) 1.474, the value of the relative weight (Wr) for males 100.128 and females 1.474 indicates that the growth of fish length is faster than the weight of fish. Analysis of the condition factor shows that the river environment is still in good condition to support the life of Tenualosa ilisha.
Penerapan BioTranspezia dengan Strategi Jigsaw Terhadap Keterampilan Komunikasi Siswa Sulistyowati, Erna; Aryani, Ima
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14726

Abstract

BioTranspezia is a multimedia that contains material about the human body's transport and exchange system accompanied by supporting images, learning videos, learning objectives, and evaluations in the form of quizzes. This multimedia is expected to be able to improve students' communication skills during learning. This research aims to improve the communication skills of grade XI students after using BioTranspezia with a jigsaw strategy. The type of research used is quasi-experimental. The research method was quantitative with the research subjects being grade XI students at SMA Batik 2 Surakarta and the research sample of students in grades XI.4 and XI.5 totaling 67 students. The research instrument using a communication skills observation sheet was made in accordance with 4 indicators, namely discussion, presentation, conveying opinions, and answering questions. The data analysis technique used is quantitative descriptive. The results of the study showed that of the total indicators in the experimental class, a percentage of 76.52% was obtained in the skilled category while the control class was 40.6% in the less skilled category. Based on the results of the study, it can be concluded that the communication skills of grade XI students at SMA Batik 2 Surakarta in the learning process can be improved through the application of BioTranspezia with a jigsaw strategy.
Efektivitas Pembelajaran TGT Berbasis CRT Pada Materi IPA Kelas VII SMP Muhammadiyah 1 Surakarta Safitri, Eka Arnessya; Agustina, Lina
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14736

Abstract

This research aims to determine the effectiveness of TGT type cooperative learning based on CRT (Culturally Responsive Teaching) on science material at Surakarta Muhammadiyah Middle School. This research method is quasi-experimental research, with a sample of 42 students, data collection techniques using tests (post-test), interviews and observation. The data analysis technique for cognitive learning outcomes is in the form of a t test and affective learning outcomes in the form of descriptive statistics. The research results show that t test results with a significance value of 0.000 <0.05, then there is an effect of TGT type cooperative learning based on CRT (Culturally Responsive teaching) on the learning outcomes of seventh grade students of SMP Muhammadiyah 1 Surakarta.. Thus, it can be concluded that the application of the TGT type cooperative learning model based on CRT (Culturally Responsive Teaching) in science material in class VII SMP Muhammadiyah 1 Surakarta is included in the effective category.
Urine Analysis of Cat Utilizing the Thinka® Automatic Urine Analyzer as an Indicator for Uropoetic Disorders Riwu, Katty Hendriana Priscilia; Karina, Soca; Afnani, Daniah Ashri; Yansri, Alifianita Anake; Kholik, Kholik; Khairullah, Aswin Rafif
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 2 (2025): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i2.14738

Abstract

This study aims to determine the chemical content of the urine of local cats living freely around Mataram. The sample used was cat urine taken randomly. Twenty-five cats’ urine samples were put into a sterile urine pot. Urine chemistry examination and observation were carried out using a urine analyzer strip to identify the levels of urine chemistry, namely nitrite, protein, pH, blood, ketones, bilirubin, and glucose. The examination was done by dipping the strip into each urine sample; the strip was taken and tapped on the tissue, then inserted into the urine analyzer machine. After the results are obtained, the machine will automatically issue the results of the urine chemistry analysis, reading the results for no more than 60 seconds. This study emphasizes observing the quantity or amount of substances and sedimentation in cat urine samples. All of the 25 samples examined were positive (100%) for nitrite, protein, ketones, and glucose levels. The results of the blood level examination in urine were negative in all samples, the examination of urine pH levels in 25 samples varied with an average pH of 6.84, and the examination of bilirubin levels was positive in 24 (96%) urine samples. From the examination of the samples, there were indications of disorders of the uropoetic system and bacteriuria in cat urine.
Identifikasi dan Analisis Kejadian Penyakit Serta Tingkat Keparahan Penyakit Pada Tanaman Mentimun (Cucumis sativus L.) Menggunakan Software Plantix di Kabupaten Kampar Provinsi Riau Mulyadi, Dedi; Ibrahim, Roy; Elfianis, Rita
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14741

Abstract

This study aims to identify the causes of disease and disease symptoms using plantix software, and to determine the incidence of disease and disease resistance that infect cucumber plants in Kampar Regency. This study used a survey method with direct observation in 3 locations and the data obtained in the field were disease symptoms, the number of affected plants, the percentage and intensity of disease attack. Data analysis was carried out at the Laboratory of Plant Disease, Faculty of Agriculture, Riau University. The results showed that (1) the results of identification carried out using Plantix software found that the pathogen that infects cucumber plants in Kampar Regency is Cucumber green mottle mosaic virus (CGMMV) with symptoms of light green or yellow spots and veins clearly visible on young leaves, yellowing leaves, wrinkles, and changes in shape, plant growth is inhibited, the fruit has spots, stripes or a distorted shape (malformation). (2) The highest disease incidence was found in Kampar Subdistrict, 71.16% with disease intensity of 46.95%, followed by Mine Subdistrict with disease incidence of 55.45% and disease intensity of 34.07%, while disease incidence in North Kampar Subdistrict was 37.25% with disease intensity of 18.79%.
Pengawet Alami Dari Berbagai Tanaman Indonesia Yang Diaplikasikan Pada Ikan Nila (Oreochromis niloticus): Studi Pustaka Handarini, Kejora; Prajudanti, Adhania Andika; Rahmiati, Retnani; Kusyairi, Achmad
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14752

Abstract

This study aimed at identifying various plants in Indonesia that can be used as natural preservatives for Nile tilapia (Oreochromis niloticus), extraction methods and their application techniques. The method used in this literature study involved electronic searches in published databases such as PubMed, Wiley Online Library, and Google Scholar. Data acquisition was conducted by searching journals using specific keywords, focusing on journal publications from 2010 to 2025. The collected data were identified, analyzed, and evaluated, followed by compiling the analysis results to develop arguments and draw conclusions.The findings of this study indicate that (1) the plant parts used as natural preservatives include leaves, rhizomes, fruits, fruit peels, seeds, and stems, with leaves being the most frequently studied compared to roots, fruits, and seeds; (2) The active compounds with potential preservative properties in Indonesian plants include flavonoids, alkaloids, tannins, steroids, triterpenoids, saponins, glycosides, and essential oils; (3) Among extraction processes, maceration is the most commonly used technique for obtaining natural preservatives from plants; (4) The application methods used for these natural preservatives include soaking and coating techniques. Thus, it can be concluded that most of the examined plants exhibit excellent potential as natural preservatives for Nile tilapia (Oreochromis niloticus) based on chemical, microbiological, and organoleptic aspects.

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