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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 80 Documents
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Search results for , issue "Vol. 13 No. 2 (2025): June" : 80 Documents clear
Antioxidant Activity, Vitamin C, and Organoleptic Quality of Flower Kecombrang (Etlinger elatior) Kombucha on Variations of Sugar Types and Fermentation Duration Novitasari, Hana; Suryani, Titik
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.v13i2.15304

Abstract

The purpose of this study was to determine the antioxidant activity, vitamin Cand organoleptic quality of torch ginger flower kombucha on variationsof sugar types and fermentation duration. This research method was experiment withCompletely Randomized Design (CRD) with 2 Factors. The first factor was the variations of sugar types (G): palm sugar (200g) and Javanese sugar (200g). The second factor was fermentation duration(F): 5 days and 7 days and green tea kombucha as control. Organoleptic quality testing included color, aroma, taste, and acceptability carried out 20 respondents. The results of the study showed that the highest of the antioxidant activity and vitamin C levels as well as the best organoleptic quality of the torch ginger flower kombucha were 82.54% and 62.65 mg/100 ml as well reddish browncolor, reddish brown color, typical kombucha aroma, sweet and sour taste, and preferred acceptability in the G1F2 treatment (200g palm sugar withfermentation duration of 7 days).
Aktivitas Orangutan Tapanuli (Pongo tapanuliensis) Berdasarkan Pergerakan, Posisi Tubuh, dan Penggunaan Strata Hutan Tazkiah, Citra; Hutasuhut, Melfa Aisyah; Manalu, Kartika
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.v13i2.15325

Abstract

This study aimed to identify the number of individuals and describe the daily behavior, movements, body position, and forest strata preferences of Tapanuli orangutans (Pongo tapanuliensis) at Camp Mayang Batang Toru Research Station, North Sumatra. This study used the focal animal sampling method and data collection techniques were carried out through direct observation with binoculars of daily activities carried out on target orangutans. This research was conducted from October 2023 to March 2024. Data analysis was carried out by descriptive statistics of the frequency of orangutan behavior based on activities carried out at Camp Mayang Station, Batang Toru, North Tapanuli, North Sumatra and presented in the form of tables and figures and then explained in the form of diagrams or graphs. The results of this study showed that there were 3 individual Tapanuli orangutans (Pongo tapanuliensis), namely Cemara, Beta, and Bittang. Daily activities observed included eating, moving, resting and other activities. Frequent movement activities were hanging up, walking on two legs and descending. Body positions that orangutans often do are Sitting, Squatting and Standing on two legs or one leg Forest stratum level 3 is more frequently used by orangutans than forest stratum level 4.
Antioxidant Levels, Chlorophyll, Carotenoids, and Antibacterial Activities of Caulerpa lentillifera From The North Coast of Java and Bali Elyanti, Ratih Nurfaizi; Alamsjah, Moch. Amin; Sulmartiwi, Laksmi
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.v13i2.15415

Abstract

This study aims to determine the effect of caulerpa habitat location on the content of active compounds and their activities as antibacterial. This research is experimental and data analysis with ANOVA. Samples come from three different locations of CBL, CBB, and CL as well as two different solvents, ethanol and n-hexane. According to research, the highest antioxidant activity produced by n-hexane CBL is 73.48%. The highest value of phenol gives n-hexane CBB at 292,867 mg/mL. The highest total flavonoids are 11.91 mg/ml produced by CBB ethanol. The total chlorophyll is between 0.25–0.87 mg/mL, while the total carotenoid is between 1.40–4.11 µ mol/L. The clear zone is formed in only 2 samples with S-test bacteria. It has 0.5 mm aureus n-hexane CBB and 1.5 mm n-hexane CL. This zone is clearly classified as very small, this can be due to the small content of the extract in the test sample. Active compounds found under the GCMS test are alkanes, alkenes, alcohols, and other fatty acids. These active compounds are a group of potentially antioxidant and antibacterial agents. It can be inferred that habitat location affects active compounds and CBB has greater potential as a source of natural materials than other samples.
Identifikasi Scylla sp. Berdasarkan Karakter Morfometerik di Kawasan Hutan Mangrove Desa Lalombi Kec. Banawa Selatan Kab. Donggala dan Pemanfaatannya Sebagai Media Pembelajaran Annisa, Rezky; Bustamin, Bustamin; Rauf, Abd.; Sabran, Moh.; Zainal, Syech; Dhafir, Fatmah
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.v13i2.15446

Abstract

This study aims to identify the morphometric characters of Scylla sp in the Mangrove forest area of Lalombi Village, South Banawa, Donggala and its use as a learning medium. This study uses a exploration method to find samples, with a sampling technique (Hand Collection) which is direct sampling. The samples obtained are identified morphologically and measure their morphometric characters. Morphometric data are analyzed using the Principal component analysis (PCA) method using the help of MVSP software. The results of this study indicate that (1) Scylla sp which has been carried out at two observation stations, overall Scylla was found consisting of 3 types of Scylla, namely Scylla paramamosia, Scylla olivaceae and Scylla serrata; (2) The morphometric characters of male Scylla paramamosian are at the highest PK 37.9 and female 30.9; male Scylla olivaceae are at the highest PK 56.5 and female 40.3; The male Scylla serrata had the highest PK of 60.3 and the female 47.5 so that in this observation the most dominant was Scylla serrata. (3) The most dominant character in the formation of the three groups of mangrove crabs in this study was the male Carapace Length (PK) and the female Carapace Length (PK).
Uji Preferensi Konsumen Terhadap Karakteristik Organoleptik Minuman Sari Kacang Bogor (Vigna subterranea (L) Verdc.) Sanaya, Dhiyaa; Fitrilia, Tiana; Sarastani, Dewi
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.v13i2.15450

Abstract

This study aims to determine the effect of the ratio of the amount of water on consumer preference on the sensory quality of Bogor bean juice. We employed a Completely Randomized Design (CRD) with one factor and three treatment levels, specifically the addition of 300 mL, 400 mL, and 500 mL of water to 100 grams of Bogor peanut seeds. The analysis performed in this study included sensory quality tests using descriptive methods, consumer acceptance tests with hedonic methods, and chemical quality assessments through proximate analysis of selected Bogor peanut juice drinks. The addition of water to Bogor peanut juice drinks affects consumer preferences regarding color and viscosity, but does not impact their preferences for aroma, taste, or overall assessment. According to the consumer preference tests, the most favored product was the Bogor peanut juice drink made with 400 mL of water. This drink contained 90.45% water, 0.23% ash, 0.21% protein, 1.15% fat, and 8.07% carbohydrates, resulting in an energy value of 43.45 kcal per 100 grams of drink. Bogor peanut juice is being developed as a milk substitute for consumers who are lactose intolerant.
Pengembangan Ensiklopedia Tumbuhan Obat di Distrik Manokwari Barat Sebagai Sumber Belajar Materi Kingdom Plantae Siswa Kelas X SMA Advent Kabupaten Manokwari Baharuddin, Wiska; Maturahmah, Enik
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.v13i2.15469

Abstract

This study aims to determine the validity, practicality and effectiveness of the development of an encyclopedia book as a learning resource for biology for class X SMA Advent Manokwari, Manokwari Regency. This encyclopedia is designed based on the results of an inventory of medicinal plants found in West Manokwari District, integrating local wisdom and scientific knowledge to improve students' understanding of biodiversity and the use of medicinal plants contextually. The method used in this study is the Research and Development (R&D) method by adapting the 4D development model, namely Define, Design, Development and Disseminate. The steps in this research include observing the types of medicinal plants in West Manokwari District (seeing, documenting, and identifying which are then made into an encyclopedia), product design, and product validation. Validation of the encyclopedia product was carried out by material experts and media experts who evaluated aspects of content, format, and readability to ensure its feasibility and effectiveness as a learning resource. Based on the results of the validation analysis by expert validators, it is known that the results of the validation of the encyclopedia book obtained an average value of 4.55 from the validator and were declared valid, validation by biology teachers had a percentage of 95.6% and it can be concluded that the category is very suitable for use as a source of learning biology and is also practical. In the field trial in this case students, the validation results had a percentage of 94%, this shows that the medicinal plant encyclopedia book is very suitable for use as a learning resource for students.
Isolasi dan Identifikasi Bakteri Asam Laktat pada Pekasam Ikan Haruan: Efek Fermentasi dan Penggorengan Safitri, Diah; Fitriah, Fitriah; Nashihah, Siti; Andika, Andika; Fajeriyati, Nurul
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.v13i2.15470

Abstract

This study aims to obtain lactic acid bacteria (LAB) isolates in fermented snakehead fish (Channa striata) pekasam and compare pekasam before and after frying with variations in fermentation time for 1 and 2 weeks. The type of research conducted in this study is experimental, whose testing starts from making pekasam using 30% salt and 50% rice from the total weight of the fish, isolation of LAB, gram staining test, scanning electron microscopy (SEM), and total plate number (ALT) testing. Data were analyzed using SPSS 27 to see significant differences between fermentation and frying times. The results showed that (1) there was LAB growth in all pekasam isolates before and after frying; (2) the results of gram staining showed that all isolates were gram-positive bacteria; (3) the results of SEM observation with a magnification of 12. 000, the morphology of bacillus-shaped bacteria with cell sizes ranging from 1.462 -1.682 µm was obtained; (4) ALT test results of LAB isolates in pekasam before frying in the first week showed results with a value of 1.90 x 106 CFU/mL and the second week 2.04 x 106 CFU/mL while LAB isolates of pekasam after frying in the first week were 0.63 x 106 CFU/mL and the second week 0.75 x 106 CFU/mL; (5) the results of data analysis obtained significant differences between the effects of fermentation and frying on ALT testing, It can be concluded that the longer the fermentation time can increase the total LAB in fermented snakehead fish (pekasam).
Effect of Vitamin C and E Supplementation on Stress Response Banggai Cardinalfish (Pterapogon kauderni) Sari, Devi Elvina; Mubarak, Ahmad Shofy; Sulmartiwi, Laksmi
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.v13i2.15494

Abstract

This study aims to analyze the effect of giving a combination of vitamins C and E as Artemia sp. supplementation on the level of stress resistance of Banggai cardinalfish. The research method used a completely randomized design. The treatments used were a combination of vitamins C and E in supplementation of Artemia sp. as feed: A (vitamin C 57.50 mg/L + vitamin E 28.75 mg/L), B (vitamin C 115 mg/L + vitamin E 57.50 mg/L), C (vitamin C 230 mg/L + vitamin E 115 mg/L), D (vitamin C 460 mg/L + vitamin E 230 mg/L), and E (vitamin C 920 mg/L + vitamin E 460 mg/L), each treatment was repeated 4 times. The main parameters observed were the level of stress resistance (frequency of pectoral fin movement, frequency of operculum movement, frequency of mouth movement) and blood glucose. Data were analyzed using analysis of variance (ANOVA) and further tests were carried out to determine the differences between treatments. The results showed that supplementation of vitamin C and E in Artemia sp. with different dose combinations had a significant effect (P < 0.05) on the frequency of pectoral fin movements, operculum movement frequency, and mouth movement frequency after hypoxia treatment at the 2nd, 4th and 8th hours and blood glucose levels after hypoxia treatment. The best stress resistance level during the study was in treatment C (vitamin C 230 mg/L + vitamin E 115 mg/L), while the lowest was in treatment A (vitamin C 57.50 mg/L + vitamin E 28 mg/L).
Partisipasi Siswa dalam Proses Pembelajaran pada Mata Pelajaran IPA di SMP Negeri 18 Palu Datubaringan, Jein; Jamhari, Mohammad; Dhafir, Fatmah; Masrianih, Masrianih; Zainal, Syech; Nurdin, Musdalifah
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.v13i2.15495

Abstract

This study aims to describe student participation in science learning at SMP Negeri 18 Palu. Student participation in science learning is considered important because it can enhance active involvement, conceptual understanding, and collaboration among students, contributing to the quality of learning. This research uses a descriptive quantitative approach with 115 students from grades VII, VIII, and IX who were selected randomly. The instrument used was a questionnaire to measure the level of student participation, and the data were analyzed using descriptive statistics. The results show that (1) student participation is categorized into five main activities: asking questions, giving opinions, discussing, working on group assignments, and presenting in front of the class. (2) Most students actively participated in these activities, with the highest participation found in discussion and presentation activities. (3) Students are more active when the material is linked to everyday life and delivered in an interesting way through visual and interactive media. Based on these findings, it can be concluded that active student participation positively contributes to the quality of science learning at SMP Negeri 18 Palu.
Pengembangan Instrumen Penilaian Afektif Berbasis Self Assesment pada Materi Biodiversity Kelas X di SMA Negeri 9 Medan Nainggolan, Farizah Handayani; Djulia, Ely; Hasairin, Ashar
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.v13i2.15497

Abstract

This study aims to develop an affective assessment instrument based on self-assessment of biodiversitymaterial class X at SMA Negeri 9 Medan. This research uses research methods used to produce certain products and test the validity and practicality of products with the Thiagarajan development model (4D) which consists of 4 stages of development, namely define, design, develop and disseminate. The subject of this study is class X at SMA Negeri 9 Medan which consists of 108 students. This research focuses on the affective realm of science, namely in the form of scientific attitudes, which include indicators of curiosity, objectivity, cooperation, responsibility, open thinking, and discipline. This development stage consists of instrument validation, reliability analysis and instrument testing. The results of the study showed that (1) after being validly tested with an average value of 3.52 with the category of very feasible using SPSS data. (2) Viewed as a whole from the Alpha Cronbach coefficient, it can be concluded that the assessment device is declared reliable on the high reliability criteria because the test scores in classes X1, X2, and X3 are 0.821, 0.821, and 0.836. (3) The results of the trial that have been carried out are concluded that the effectiveness criteria have been achieved with the average score of the three respondents being 82%.

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