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Biocaster : Jurnal Kajian Biologi
Published by Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu
ISSN : 28083598     EISSN : 2808277X     DOI : https://doi.org/10.36312/biocaster
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology
Biocaster : Jurnal Kajian Biologi (B : JKB), focus to bridge the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of advances in biology research, teaching, and learning. 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. Biocaster : Jurnal Kajian Biologi (B : JKB), receiving and publishing article in the form of research and review (scientific article) in the field of biology education and utilization of biological research in teaching and learning. Each article must be linked to the theme "21st century skills in biology education" and / or "Efforts to support the achievements of the goals set forth in the Sustainable Development Goals (SDGs) through biology education". All articles are published in English and under go a peer-review process. The scope of Biocaster : Jurnal Kajian Biologi (B : JKB), is focused on biology education research/review both in topics covered as well as disciplinary perspective : 1) Biology teaching and learning materials at all education levels; 2) Pure Research of Biology developed or studied to the sources, materials, or instructional media Biology (using the Research and Development paradigm/R&D); 3) Curriculum of Biology Education at all education levels; 4) Quasi-experiment, Class Action Research (CAR), and Lesson Study in Biology teaching and learning; 5) Other Qualitative Research of Biology Education; 6) Biology Learning Evaluation/Assessment; 7) Teacher Professional Issues/Trends in Biology Education; and 8) Environmental education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 206 Documents
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Revitalisasi Pangan Tradisional : Uji Potensi Daun Kesi (Lannea coromandelica) dalam Fermentasi Uwi Kaju Lamu Wae, Veronika P. Sinta Mbia; Priska, Melania; Jariyah, Ainun
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.759

Abstract

Fermentation is an important process in the processing of traditional food of the Lio tribe, one of which is uwi kaju lamu. This study aims to examine the potential of kesi leaves (Lannea coromandelica) as a natural fermentation agent in the traditional food uwi kaju lamu, a typical food of the Lio Tribe in Ende Regency, East Nusa Tenggara. The research method used is a mix method with a sequential exploratory design (qualitative and quantitative). The qualitative method (interviews, observations, and FGD) aims to confirm the traditional knowledge of the community regarding the use of kesi leaves in the fermentation process of uwi kaju lamu, while the quantitative method is tested in the laboratory. The results showed that the cyanide level of 6 mg/kg was far below the maximum threshold of 50 mg/kg, making it safe for consumption. Secondary metabolite compounds were detected only saponins, while other compounds were not detected indicating degradation of complex components. A pH value of 9.18 (alkaline) indicates contamination in the traditional fermentation process, so further research is needed. Organoleptic tests on 30 untrained panelists showed that the taste aspect showed a high acceptance rate (of 7.47) from an average preference above 7.00 on a scale of 5-9. Overall, kesi leaves have the potential as a natural fermentation agent in the processing of uwi kaju lamu.
Analisis Kerapatan dan Ukuran Stomata Tumbuhan Dikotil pada Area Naungan dan Terbuka di Arboretum Sempaja (sebagai Bahan Ajar Materi Jaringan Tumbuhan Kelas XI SMA) Nuryani, Nuryani; Herliani, Herliani; Purwati, Sri; Akhmad, Akhmad
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.769

Abstract

Shading causes differences in light intensity that trigger physiological and morphological variations in leaves, including stomata density and size as a form of adaptation to balance photosynthesis and transpiration. This phenomenon is the basis for selecting the research, because it illustrates the adaptive ability of plants to changes in the microenvironment in their natural habitat. This study aims to analyze the density and size of stomata of dicotyledonous plants growing in shaded and open areas in the Sempaja Arboretum. This study uses a descriptive quantitative approach with samples of several dicotyledonous plant species growing in shaded and open areas. Data were obtained through microscopic observation of leaf epidermis preparations using direct section techniques, optilab, and image raster 3. Statistical analysis showed that the density of stomata in open areas was higher (480 stomata/mm²) than in shaded areas (323 stomata/mm²). However, the size of the stomata did not show a consistent pattern; The average length (25.21 µm) and width (18.45 µm) of stomata in the shaded area were slightly larger than those in the open area (24.16 µm and 17.18 µm). These results indicate that high light intensity encourages increased stomatal density as an adaptive mechanism to support photosynthesis.
Penerapan Model Pembelajaran Problem Based Learning untuk Meningkatkan Keterampilan Berpikir Kritis Peserta Didik pada Materi Sistem Pencernaan Manusia di Kelas XI SMA Negeri 1 Moutong Malasugi, Regina R.; Mamu, Hartono D.; Jannah, Magfirahtul; Lamondo, Djuna; Yusuf, Frida Maryati
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.771

Abstract

This study aims to determine the effectiveness of the application of the Problem Based Learning model to improve students' critical thinking skills on the human digestive system material of class XI of SMA Negeri 1 Moutong. The study used a pre-experimental design method with a one group pretest-posttest design approach involving 25 students of class XI IPA2. The research instruments included critical thinking tests (pretest and posttest), learning implementation sheets, student activity sheets, and student response questionnaires. The results showed that the learning implementation reached an average of 94% with the category (very good), student activity 94% (very good), and student response 91% (very positive). The average pretest score of 42.2 increased to 79.2 in the posttest with an N-Gain value of 0.59 (moderate category). Significant improvements occurred in the indicators of providing simple explanations and organizing strategies or actions, increasing from 34.4% and 32% to 92%, respectively. These results indicate that the implementation of the PBL model is effective in improving students' critical thinking skills in the human digestive system.
Pengembangan Media Pembelajaran Augmented Reality Card Berbantuan Aplikasi Assemblr Edu pada Materi Sistem Pencernaan Manusia bagi Peserta Didik Kelas XI di MAN 1 Boalemo Daud, Pransiska Sunarti; Mardin, Herinda; Akbar, Muh. Nur; Lamondo, Djuna; Usman, Nurul Fajryani
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.773

Abstract

This study aims to describe the validity and practicality of Augmented Reality Card learning media assisted by the Assemblr Edu application on the human digestive system material for grade XI students at MAN 1 Boalemo. The method used in this study is the research and development method with the ADDIE model which includes three stages, namely analyze, design, and develop. The data collection instruments in this study consisted of a needs analysis questionnaire, interviews, media validity test sheets, material validity test sheets, and teacher and student response questionnaires. The results of the study showed that the validity of Augmented Reality Card learning media on human digestive system materials obtained a percentage of 90% of media experts with very valid criteria, and 93.3% of material experts with very valid criteria. The test of the practicality of learning media was seen through the results of the teacher response questionnaire which obtained a percentage of 95% and the student response questionnaire of 88% with very practical criteria. The assessment obtained from user responses, namely teachers and students as a whole, was 91.5% which was indicated as a practical value. Based on the results of the research, it can be concluded that Augmented Reality Card learning media assisted by the Assemblr Edu application on human digestive system materials is declared valid and practical, so it is suitable for use as a tool in learning biology, especially human digestive system materials.
Analisis Pola Distribusi dan Keanekaragaman Komunitas Biotik di Lima Kecamatan Kabupaten Majene, Sulawesi Barat dengan Metode Relevé Sari, Ratna
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.780

Abstract

Indonesia is known as one of the mega-biodiversity countries in the world, because it has a very high level of biodiversity, which is influenced by geographical conditions, tropical climate, and the diversity of ecosystems spread across various islands. This study aims to analyze the diversity of flora and fauna communities using the Relevé method in five sub-districts in Majene Regency, West Sulawesi Province, namely Sendana, East Banggae, Banggae, Tammerodo Sendana, and Pamboang Districts. The relevé method was applied with a multi-level approach through three plot sizes, namely 1×1 m², 3×3 m², and 5×5 m² to observe the influence of area area on the number of species found. The results of the observations showed that the increase in the area of the plot was directly proportional to the number of species identified. In plots measuring 1×1 m², the lowest average number of species was found, while in plots measuring 5×5 m², the highest number of species was found. The results of this study show that there is a pattern of positive relationships between area area and species richness which reflects the level of environmental heterogeneity and ecosystem complexity in the research area. The Relevé curve shows an inlinear trend of increasing the number of species with a tendency to reach saturation points on the widest plot, indicating that most species are already represented in that area. These findings confirm that the Relevé method is an effective approach in studying the structure and composition of biotic communities, especially in areas with diverse ecological conditions such as Majene Regency. The results of the research are expected to be the basis for efforts to manage and conserve local biodiversity, as well as provide an overview of the ecological potential in the five sub-districts studied.
Analisis Kandungan Mikroplastik pada Air Payau Teluk Kendari (Studi Kasus Muara Sungai Wanggu) Dewi, Wa Ode Nanang Trisna; Erif, La Ode Muhammad; Garusu, Ema Hermawati; Jamal, Fahrezi; Azmi, Aulia Ulil
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.848

Abstract

This study aims to analyze the content of microplastics in brackish water in Kendari Bay by taking two strategic points, namely the mouth of the Wanggu River as the main entrance to materials from the mainland, and the mouth of Kendari Bay as the outlet of water into the open sea. The method used in this study is quantitative descriptive with a purposive sampling method for the determination of location and sampling points, which includes water and sediment sampling. Microplastic separation using filtration techniques, and morphological identification with stereoscopic microscopy. The data were analyzed to determine the amount, size, shape, and color of microplastic particles per milliliter of water. The results showed that the microplastic form in brackish water and sediment consists of fibers, films, fragments, and foam. The colors of the microplastics found were generally seen at both observation stations (locations), namely black (37%), transparent (31%), yellow (13%), green (13%), and blue (6%). The size of microplastics at the overall sampling point, both in brackish water and in sediments with fiber shapes ranging from approximately 0.1 mm-0.2 mm, film shapes were found with sizes ranging from 0.02 mm-0.06 mm. The fragment shape ranges in size from 0.04 mm-0.06 mm and the foam shape in size ranges from 0.01 mm to 0.27 mm. The results of microplastic measurements in two locations, namely the first location of the Wanggu River estuary obtained an abundance of microplastics in brackish water samples calculated on a scale of 150 mL, showing that microplastics at the sampling point of mangrove areas had the highest concentration, namely 16,080 particles/150 mL, followed by estuaries (13,320 particles/150 mL), and residential areas (10,560 particles/150 mL). The total abundance of all locations reached 39,960 particles/150 mL, with foam being the most abundant type (16,560 particles/150 mL), followed by fragment form (9,000 particles/150 mL), fiber (8,850 particles/150 mL), and finally film (5,550 particles/150 mL). From the relative abundance, it shows that in general, the most relative abundance is in the form of foam microplastics, both in estuaries (42.1%), residential areas (47.2%), and mangroves (37.13%). The total abundance of microplastics in the sediment of the Wanggu River Estuary is 23,860 particles/100 grams of sediment or 238.6 particles/gr. These findings indicate a fairly high level of microplastic contamination, especially in areas adjacent to residential and terrestrial activities.
Inventarisasi Keanekaragaman Flora sebagai Upaya Konservasi di Kawasan PLTA Way Besai, Lampung Barat Munawaroh, Khoryfatul; Tohir, Rizki Kurnia; Anita, Vilda Puji Dini; Hasibuan, Mhd Muhajir; Tartil, Tafdhilah; Faedloni, Akbar Ash Shiddiqi; Setyawan, Ari; Azhaar, Daliilah Haniifah; Christoper, Ruben; Johanes, Ricky; Pandapotan, Sumitro; Aziz, Agung Abdul
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January (In Progress)
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.704

Abstract

The Way Besai Hydroelectric Power Plant (PLTA) is located in West Lampung Regency, Lampung Province, with a capacity of 90.4 MW and utilizes water from the Way Besai River. The availability of stable water discharge is highly dependent on the vegetation conditions in the catchment area. This study aims to examine the diversity of flora and vegetation sustainability in the Way Besai hydropower plant area using an exploration method divided into six observation lines. The results showed that there were 57 types of plants belonging to 21 families. The most common species are sonokeling (Dalbergia latifolia) with 140 individuals and seripit (Crypteronia paniculata) with 113 individuals. The families with the highest number of species are obtained from the families Moraceae and Fabaceae. The types of the Moraceae family are dominated by Ficus spp., which acts as a source of animal feed, while from the Fabaceae family, there are more types of multipurpose plants (MPTS). The diversity of species and evenness of flora around the Way Besai hydropower plant is relatively high, as shown by the diversity index value (H') of 3.281 and the evenness index value (E) of 0.812. Although this value is relatively high, the maintenance and conservation of flora still needs to be carried out intensively to maintain the stability of the water discharge of the Way Besai River. These results confirm that the vegetation around the Way Besai hydropower plant is still relatively sustainable, but sustainable conservation efforts are needed to control land conversion that has the potential to reduce the water discharge of the Way Besai River.
Total Plate Count (TPC) Test and Contamination of Coliform Escherichia coli and Salmonella sp. Bacteria in Cucumulawak Jamu in Traditional Markets in Medan City Adma, Tarisa; Rangkuti, Marlinda Nilan Sari
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January (In Progress)
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.746

Abstract

Jamu is a traditional Indonesian drink derived from plants that are efficacious for use in efforts to maintain health and cure diseases. However, because the manufacturing process is still simple, jamu is at high risk of contamination by microorganisms such as fungi and pathogenic bacteria such as Escherichia coli and Salmonella sp. This study aims to determine the presence of Escherichia coli and Salmonella sp. Coliform contamination in Javanese turmeric herbal medicine sold in traditional markets. This study is based on the simple process of making jamu using hands, unclean clothes from jamu makers, and unclean processing areas, this will increase the risk of contamination and result in jamu being contaminated by microorganisms that can endanger consumer health. Data collection techniques use testing and counting of bacterial colonies with the TPC (Total Plate Count) method and Escherichia coli bacteria with the MPN (Most Probable Number) method which consists of presumptive test, confirmatory test and complementary test. The results of the analysis showed that in the TPC (Total Plate Count) test, three of the five samples, namely Sp 1, Sp 3, and Sp 4, showed results that were suitable for consumption because the TPC (Total Plate Count) value did not exceed the maximum limit of BPOM 2019 and two of the five samples, namely Sp 2 and Sp 5, showed results that were not suitable for consumption because they exceeded the maximum limit of BPOM 2019. These findings suggest that poor hygiene practices during jamu preparation can lead to contamination that threatens consumer health, emphasizing the need for improved sanitation control and standardized processing methods.
Identifikasi dan Karakteristik Morfologi Jamur Makroskopis di Garis Wallace dan Weber Kawasan Hutan Jalur Pendakian Moya Mabuku Kota Ternate Menggunakan Koordinat GPS Dwisatyadini, Mutimanda; Zikriyani, Hikmah; Sulistiana, Susi; Winarni, Inggit; Papuangan, Nurmaya; Nurhasanah, Nurhasanah
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January (In Progress)
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.768

Abstract

Differences in organic matter content and soil pH can cause different fungal spore growth. Soil type is one of the factors that directly affect the presence of fungi. This research was conducted on the Wallace and Weber lines in Ternate, North Maluku. The research location was chosen because it has endemic fungal species, biodiversity that has not been widely discovered, and unique geographical conditions. Data collection was carried out through direct surveys using exploration methods, sampling with purposive random sampling, and direct collection of fungi based on shape, color, stem length, diameter, and type of substrate where they grow (soil, wood, leaves, and others), along with observations of fungal morphology. Qualitative analysis includes determining the order, family, genus, and scientific name presented in the form of tables and images, as well as descriptions of the characteristics of each species based on the identification results. The diversity index was also calculated. Environmental parameters measured included air temperature, soil moisture, light intensity, and soil pH. The results of the study showed that there were 20 species of fungi in the Moya Mabuku Hiking Trail Forest Area, Central Ternate District, Ternate City, North Maluku, Indonesia, with GPS coordinates of 0.8° North Latitude and 127.3630910° East Longitude. These fungi belong to the Ascomycota and Basidiomycota divisions, with the families Helotiaceae, Strophariaceae, Hygrophoraceae, Auriculariaceae, Omphalotaceae, Tremellaceae, Hypoxylaceae, Phyllotopsidaceae, Polyporaceae, Gardonemataceae, Tricholomataceae, Sarcoscyphaceae, Agaricaceae, Mycenaceae, Psathyrellaceae, and Cortinariaceae. The results of environmental parameter measurements on wood, soil, and coconut shell substrates showed that soil pH ranged from 3.85-6.10; air humidity 77.5-91.5% RH; substrate humidity 36.5-99.9%; Light intensity ranges from 93.5 to 7496 cd; air temperature ranges from 27.7 to 33.9°C; and substrate temperature ranges from 27.4 to 33.9°C. These pH conditions, ranging from 3.85 to 6.15, are considered optimal for supporting the growth of macroscopic fungi.
Pengaruh Model Project Based Learning (PjBL) terhadap Kemampuan Berpikir Kritis dan Hasil Belajar Siswa pada Materi Sel Istikhomah, Nur; Masitah, Masitah; Kurniawati, Zenia Lutfi; Rambitan, Vandalita M. M.; Jailani, Jailani; Akhmad, Akhmad
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January (In Progress)
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.785

Abstract

The low critical thinking skills and student learning outcomes in science learning are still the main problems in schools. This study aims to determine the influence of the Project Based Learning (PjBL) learning model on the learning outcomes and critical thinking skills of grade VIII students on animal cell and plant cell materials at SMP Muhammadiyah 6 Samarinda. This study uses a quantitative method with a quasy experimental nonequivalent control group design. The sample totaled 50 students consisting of 25 students in the experimental class and 25 students in the control class. The research instrument is in the form of an essay test consisting of 10 questions. The results showed that the average post-test learning outcomes of the experimental class were higher (82.6) than the control class (59.2). In critical thinking skills, the experimental class obtained an average of 81.8 with the very good category, while the control class obtained 50.5 with the fair category. The results of the t-test showed a significant difference between the two classes (sig. < 0.05). Thus, the application of the Project Based Learning (PjBL) learning model can be recommended to improve critical thinking skills in science learning in junior high school.

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