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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 123 Documents
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Search results for , issue "Vol. 12 No. 1 (2024): June" : 123 Documents clear
Aktivitas Antibakteri Ekstrak Daun Mangrove (Rhizophora mucronata) pada Bakteri Helicobacter pylori Penyebab Tukak Lambung Pertiwi, Reza; S, Salprima Yudha; Wibowo, Risky Hadi; Notriawan, Doni; Nasution, Riski Padilah; Azhar, Afra Wafiqah
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.9957

Abstract

Mangrove (Rhizophora mucronata) is a plant that can be used as an antibacterial because it contains several secondary metabolite compounds such as saponins and flavonoids which can inhibit bacterial growth. This research aims to determinehe antibacterial activity of mangrove leaves (Rhizophora mucronata) in inhibiting the growth of Helicobacter pylori bacteria. This research is an in vitro study using the agar dilution method for 2-5 days. The treatment groups consisted of negative, positive (co-trimoxazole), ethanol extract of mangrove leaves (Rhizophora mucronata) with concentrations of6.25%, 12.5%, 25% and 50%. The treatment was carried out by adding the Helicobacter pylori suspension to a petri dish containing agar media. Observations were made to see whether bacteria grew in the media. The data is then analyzed and broken down from the results of calculating the diameter of the inhibition zone. The test results showed that the ethanol extract of mangrove leaves (Rhizophora mucronata) had antibacterial activity in the weak category in inhibiting the growth of Helicobacter pylori bacteria. This antibacterial activity can be caused because mangrove leaves (Rhizophora mucronata) contain secondary metabolite compounds with an antibacterial mechanism of action, so this is in line with the results of this study.
Comparison of Antioxidant Activity and Chemical Profile between Green Tea Kombucha with Green Tea and Rosela Combination Kombucha Tunjungsari, Gerda Pintoko; Fikroh, Retno Aliyatul
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.9977

Abstract

This study investigates the antioxidant potential and chemical profile of kombucha made from green tea leaves and roselle flowers, analyzing pH, alcohol content, and the impact of fermentation time. Kombucha was prepared with green tea and a 1:1 mixture of green tea and roselle, with samples analyzed on days 1, 4, 8, 12, 16, and 24. Antioxidant activity, pH, and alcohol content were measured, and statistical analyses including one-way ANOVA, Tukey HSD, and Spearman correlation tests were conducted. Results indicated that the combination kombucha exhibited higher antioxidant activity (96.39% DPPH inhibition) compared to green tea kombucha (79.62%). There was no significant difference in pH and alcohol content between the two types (p > 0.05). A strong negative correlation was found between pH and fermentation time (-0.589, p < 0.001) and pH and alcohol content (-0.571, p < 0.001), while a strong positive correlation was observed between % inhibition and fermentation time (0.637, p < 0.001). The findings suggest that combining green tea and roselle enhances antioxidant activity in kombucha, and fermentation time significantly affects antioxidant activity, pH, and alcohol content.
Analisis Kesulitan Guru Biologi dalam Mengembangkan Modul Ajar pada Kurikulum Merdeka di Sekolah Penggerak Kabupaten Temanggung Darmawan, Ericka; Rachman, Fikri; Sukmawati, Ika
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.9982

Abstract

The new policies included in the independent curriculum certainly have several different aspects. One of the differences here is in the teaching tools. In the independent curriculum, the Learning Implementation Plan (RPP) is referred to as a teaching module. Teachers can choose or even modify their own teaching modules that have been provided by the central government. Teachers need to develop teaching modules, but in reality there are still many teachers who experience difficulties in developing teaching modules. This research aims to determine the difficulties experienced by high school biology teachers in developing teaching modules. This study used qualitative research methods. The research subjects taken were the population of class X and XI Biology teachers at SMA Negeri 2 Temanggung, SMA Negeri 1 Candiroto, and SMA Negeri 1 Pringsurat. Data collection techniques used in research include observation, interviews and questionnaires. The research results show that the difficulty of Biology teachers in developing teaching modules is 45%. The level of difficulty is found in indicators of analysis and mapping of student needs, determining the dimensions of the Pancasila student profile, clarity of learning objectives, organizing teaching materials, determining learning models, determining and carrying out assessments, evaluating learning and following up on teaching modules, as well as difficulties in analyzing learning outcomes. will be reduced to a teaching module. The factors that make it difficult for Biology teachers to develop teaching modules are: 1) the number of students; 2) difficulty reading Learning Outcomes (CP); 3) the material is very short and unsystematic; 4) time constraints; 5) minimal reference for the implementation of the assessment; and 6) level of technological mastery. Thus, it can be concluded that the difficulties of high school biology teachers in developing teaching modules in the independent curriculum at Temanggung driving schools are in the "sufficient" category.
Pengaruh Model Pembelajaran Autentik terhadap Keterampilan Berpikir Kritis Siswa SMA Angelina, Natasya Mia; Suciati, Rizkia; Safahi, Luthpi; Astuti, Yuni
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.9992

Abstract

Critical thinking skills are one of the 21st century skills that students must have. Students can master these skills so they can develop life skills and soft skills. Critical thinking skills can be developed by connecting learning material with real experiences in everyday life, thereby encouraging students to analyze. This research aims to determine the effect of authentic learning models on high school students' critical thinking skills. The research method used was quasi-experiment, post-test only control design with 1 experimental class and 1 control class. The research instrument is a written test in the form of a description totaling 13 questions. The results of the research showed that the hypothesis test obtained a tcount value of 5.676 > ttable of 1.997 so that the critical thinking skills data in the experimental class was significantly different from the critical thinking skills in the control class. This research can be concluded that the authentic learning model influences high school students' critical thinking skills.
Etnobotani Tikung Masyarakat Melayu Dusun Batu Rawan Kabupaten Kapuas Hulu dalam Budidaya Madu Secara Tradisional Ayu, Masha; Lovadi, Irwan; Gusmalawati, Dwi
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.10004

Abstract

Wild Honey is produced directly from the hives of Apis dorsata bees or wild bees that live in forest areas. Wild Honey is produced through traditional methods that utilize plants and are not livestock. Plants that are utilized in the form of plant wood as artificial nests called tikung and flowers from bee food trees. The purpose of this study was to determine the types of plants as tikung wood and bee food trees and document the knowledge of traditional honey farmers about the ethnoecology of Batu Rawan Hamlet, Kapuas Hulu Regency. This study used purposive sampling method in determining respondents and 15 respondents were obtained, then continued with semi-structured interviews. Data analysis was conducted with citation frequency. The results showed that there were 5 species of tikung wood and 15 species of bee food trees belonging to 12 families. Fagraea fragrans, Shorea belangaran, Litsea resinosa, Gluta renghas, Shorea sp., are plant species used as tikung wood trees, the dominant species reported by respondents is Litsea resinosa which is 93.3%. Mesua hexapetala, Syzygium claviflorum, Barringtonia acutangula, Ternstroemia sp., Carallia brachiata, Teysmanniodendron sarawakanum, Syzygium sp., Gomphia serrata, Eugenia sp., Syzygium inophyllum, Timonius flavescens, Ixora mentangis, Syzygium attenuatum, Memecylon edule, Crudia teysmannii are plant species used as bee fodder trees, bee fodder tree species reported dominantly by respondents are Barringtonia acutangula species which is 100%.
Efektivitas Penggunaan Video Animasi Powtoon pada Materi Jamur terhadap Hasil Belajar Siswa Kelas X Dwitia, Widi; Wahyuni, Eko Sri; Yeni, Laili Fitri
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.10018

Abstract

The aim of this research is to determine the effectiveness of using powtoon animation videos on mushroom material on the learning outcomes of class X students at SMA Negeri 1 Pemangkat. The form of research used is Quasy Experimental Design with a Non-Equivalent Control Group Design research design. The samples for this research were classes X C (control class) and X D (experimental class). Intact Group sampling technique. The instrument used is a multiple choice test with a total of 20 questions. The average value of learning outcomes for experimental class students was 15.22, while the average value of learning outcomes for control class was 14.28. Based on the results of parametric statistical tests (t-test), the results obtained are tcount 3.13 > ttable 2.03 so it can be concluded that H0 is rejected and Ha is accepted, where there are differences in the learning outcomes of students who are taught using Powtoon animation video media and students who are taught using charta media. . Based on the results of the effect size of learning using powtoon animation video media, it obtained a value of 0.78 in the medium category, meaning that the effectiveness of learning using powtoon animation video media on mushroom material was classified as moderate in improving the learning outcomes of class X students at SMA Negeri 1 Pemangkat by 28.23%.
Deskripsi Kesadaran Metakognitif Siswa SMP Negeri 14 Pontianak pada Mata Pelajaran IPA Riyadi, M. Akbar Slamet; Ningsih, Kurnia; Tenriawaru, Andi Besse; Afandi, Afandi
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.10088

Abstract

This research aims to describe the metacognitive awareness of aspects of knowledge about cognition and aspects of cognitive regulation of students at SMP Negeri 14 Pontianak in science subjects. The method used in this research is quantitative descriptive. The population in this study was class VIII students at SMP Negeri 14 Pontianak, totaling 308 students, divided into 9 classes, namely VIII A, VIII B, VIII C, VIII D, VIII E, VIII F, VIII G, VIII H, and VIII I. The sampling technique uses the Slovin formula with a sample size of 75 students. The instrument for this research is the Metacognitive Awareness Inventory for Science (MAIS) instrument, developed by modifying the Metacognitive Awareness Inventory (MAI) instrument developed by Schraw & Deninson (1994). The results of the research obtained: 1) description of metacognitive awareness aspects of knowledge about cognition of students at SMP Negeri 14 Pontianak, 10.67% of students in the developing category, 77.33% of students in the good category (ok), and 12% of students in the very good (super); and 2) description of metacognitive awareness of aspects of cognitive regulation of students at SMP Negeri 14 Pontianak, 6.67% of students in the developing category, 89.33% of students in the good category (ok), and 4% of students in the very good (super) category.
Inovasi Grafting Mangga Dodol (Mangifera indica L.) Berdasarkan Tipe Mata Tunas dan Panjang Entres Boleu, Fiktor Imanuel; Buka, Oktosea; Nusa, Davidson Corneles; Samloy, Vanhurd
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.10104

Abstract

The research was conducted to determine the effect of selecting the type of entres length and bud eyes in grafting dodol mango (Mangifera indica L) on the process of bud initiation, bud height, and leaf width. The experimental design used was Randomized Complete Block Design with factorial pattern. The first treatment is the type of entres length, namely 7 cm (P1), 10 cm (P2) and 13 cm (P3) while the second treatment is the type of bud eye of the entres, namely without bud eye (M1), 1 bud eye (M2) and 2 bud eyes (M3). Based on the type of bud eye, treatments P2 and P3 showed a better effect than P1 on the bud initiation process and leaf width parameters. While in the measurement of bud height, P3 treatment showed a better effect than P2 and P1. Meanwhile, in terms of the type of buds, treatments M2 and M3 had a better effect than M1 on the process of bud initiation, bud height and leaf width. The results of the analysis of variance showed that there was an interaction between the type of length and the type of bud eye on all three parameters.
Handsanitizer from Kitolod Leaf Extract: Optimized Antibacterial Gel Against Staphylococcus aureus with SNI 2588:2017 Quality Analysis Mashadi, Hisyam; Fikroh, Retno Aliyatul
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.10105

Abstract

This research aims to test the effectiveness of hand sanitizer based on kitolod leaf extract as a natural alternative for cleaning hands. The research method includes extraction of kitolod leaves, phytochemical testing, making hand sanitizer, antibacterial test, swab test, and analysis based on SNI 2588:2017 standards. Extraction of kitolod leaves using 96% ethanol and phytochemical tests showed the presence of alkaloids, flavonoids, saponins, tannins, and steroids/triterpenoids. In the antibacterial test against Staphylococcus aureus, the hand sanitizer formula with 32% kitolod extract showed an inhibition zone of 19.7 ± 0.35 mm. The market hand sanitizer with 70-95% alcohol showed the highest inhibition zone (29.7 ± 5.15 mm). Quality testing of Formula 1 hand sanitizer with SNI 2588:2017 standards, shows that the product meets the established quality requirements. This product has a pH of 6.44 ± 0.45, the expected pH standard to avoid skin irritation. The TPC test results also show that this product's number of bacterial colonies is below the set limit of 2.75x102 ± 5.03 colonies/g, confirming the product's safety as a hand sanitizer.
Karakterisasi dan Identifikasi Rhizobakteri Asal Mangrove Tanjung Pilawang sebagai Biokontrol dan Agen Hayati Pertumbuhan Tanaman Maatoke, Cornelia Dolfina; Gisisi, Deiby Elsa; Girsang, Yusi Firdawati
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): 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.v12i1.10133

Abstract

Rhizobacteria are a type of microbe that has an important role in providing nutrients to plants. Rhizobacteria live in symbiosis with plant roots, where their activity has a significant influence on plant growth and development. Various microbes that have the potential to stimulate plant growth are thought to reside in mangrove root areas. The aim of this research is to determine the type of rhizobacteria of the Tanjung Pilawang mangrove, Gura Village, Tobelo District, North Halmahera Regency which is capable of inhibiting the growth of the fungus Collectotricum capsici and dissolving phosphate to be used as a biocontrol and biological agent for plant growth. The research methods used include the isolation stage, selection and characterization stages, and identification stages. The results of the research showed that 11 isolates of rhizobacteria were isolated from Tanjung Pilawang mangrove soil, of these 11 isolates there were two isolates that had the potential to inhibit the growth of the pathogenic fungus Colletotricum capsici and were able to dissolve phosphate, where each isolate was able to provide a Dissolution Index (IP) value. the highest is 2.85 mm and 1.91 mm. After identification, the two isolates were identified as Bacillus subtilis (RTM 10) and Pseudomonas sp (RTM 06), so that these two bacteria have potential as biocontrol and biological agents for plant growth.

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