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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
Handsanitizer from Kitolod Leaf Extract: Optimized Antibacterial Gel Against Staphylococcus aureus with SNI 2588:2017 Quality Analysis Hisyam Mashadi; Retno Aliyatul Fikroh
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.
Analisis Kesiapan Guru Biologi dalam Mengimplementasikan Kurikulum Merdeka Belajar Shalsabila Siahaan; Khairuna Khairuna
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.v12i1.11610

Abstract

The objective of this study is to explore the implementation of the Independent Learning Curriculum (Kurikulum Merdeka Belajar) and the challenges faced by teachers during its implementation. This research adopts a qualitative approach with a descriptive research design. The subjects of the study are the School Principal and Biology teachers at SMA Negeri 2 Percut Sei Tuan. Data collection involved observation, interviews, and documentation. Data analysis techniques included data reduction, data presentation, and drawing conclusions. Data validity was ensured through Technique Triangulation. The findings indicate that SMA Negeri 2 Percut Sei Tuan has implemented various aspects related to the Independent Learning Curriculum, one of which is the application of the Pancasila Student Profile through Project-Based Learning. Based on interviews, teachers encounter challenges in determining assessments that align with the intended learning objectives, especially in project-based learning scenarios. This confusion stems from the variety of assessment types such as presentations, projects, products, oral assessments, written assessments, and others. To address these issues, both the School Principal and teachers attend monthly training sessions as part of the Teacher Working Group (Kelompok Kerja Guru, KKG) to tackle problems and enhance teacher competence in teaching and learning activities.
Determinan Kinerja Tenaga Perawat di Ruang Rawat Inap RSUD Bima Tahun 2023 Amir Amir; Lalu Sulaiman; Menap Menap
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.v12i1.10781

Abstract

Nursing services as an integral part of health services clearly have a significant contribution to the quality of services in hospitals, so that every effort to improve the quality of hospital services must also be accompanied by efforts to improve the quality of nursing services. The aim of this research is to determine the influence of education, motivation, incentives, and employment status on the performance of nurses in inpatient room of the Bima Hospital. This research method uses quantitative research with analytical observational. The research design used was a cross-sectional study. The research sample consisted of 134 people. Data were analyzed using bivariate analysis and the Chi Square test was carried out. The results of this research show that there is an influence of education, motivation, incentives on the performance of nurses in the inpatient room at Bima Regional Hospital with a p-value of 0.00 (p <0.05). Meanwhile, employment status has no influence on the performance of nurses in the inpatient room at Bima Hospital with a p-value of 0.507 (p > 0.05). Bima Hospital management is expected to always maintain employee performance by implementing governance based on education, motivation, and incentives.
Karakteristik Fisikokimia, Organoleptik, dan Kandungan Gizi Mayones Minyak Ikan Lemuru (Sardinella sp.) Nazhry Zahra Arifah; Mochammad Amin Alamsjah; Laksmi Sulmartiwi
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.v12i1.10712

Abstract

Mayonnaise is a semi-solid emulsion processed product that has a very high fat content because the basic ingredients consist of vegetable oil (70-80%) and egg yolk (15-20%). Generally, mayonnaise has a high fat and calorie content. High fat content if consumed excessively will cause various diseases such as cholesterol, coronary heart disease and the risk of obesity. The use of lemuru fish oil as a substitute for mayonnaise is still rarely done. The protein content in lemuru fish is high enough that can be used as a source of protein. In addition to protein, lemuru fish oil is also enriched by the PUFA content of DHA of 30.10%. The aim of this research was to determine the quality of mayonnaise based on the organoleptic value and stability of the lemuru fish oil mayonnaise emulsion after a shelf life test. Proximate fat analysis using the Soxhlet method, protein analysis using the Kjeldahl method, ash analysis using a furnace, crude fiber analysis using the gravimetric method, water content analysis by evaporating the water in the material using an oven, carbohydrate analysis using the differential method. Shelf life test using the Accelerated Shelf Life Test method. Organoleptic testing uses a hedonic scale (1-5), with a total of 30 panelists. Emulsion stability test using a centrifuge by calculating the volume of oil separated. This study used a factorial randomized block design with two factors, namely temperature (5, 25, 35°C) and time (7, 14, 21 days). Mayonnaise proximate results from all parameters have met SNI except for fat and calorie parameters which tend to be lower than SNI standards. The ANOVA test results showed significant differences in organoleptic color and aroma, but it did not show significant differences in organoleptic texture and mold. The best organoleptic results at one-week storage. The emulsion stability results showed significant differences due to temperature and storage time factors.The best emulsion stability results at one week storage at 5, 25 and 35°C with a value of 100%.
Efektivitas Fungisida dan Cuka untuk Sterilisasi Eksplan Sirih Hitam (Piper betle L. var Nigra) Paramita Cahyaningrum Kuswandi; Fajar Prasetya
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.v12i1.9901

Abstract

Black betel (Piper betle L. var. Nigra) can be found in Indonesia and has been proven to have antimicrobial activity so it has the potential to be used as a medicinal plant. Tissue culture can be used to produce seeds that are the same as the parent plant in large, uniform quantities and to produce secondary metabolites from cell suspension cultures. The sterilization method is a very important initial stage for in vitro plant growth, so optimizing sterilization is the aim of this research. The planting materials used are black betel leaves and nodes. Optimization of the sterilization method was carried out using variations in materials and sterilization time duration. The ingredients used were dish soap, bactericide, fungicide, sodium hypochlorite solution, vinegar, alcohol, and Plant Preservative Mixture (PPM). The medium for leaf explants is MS with 2,4-D and for nodes was MS with BAP. Data on the number of contaminated explants were analyzed using the SPSS program. The results of analysis of variance (ANOVA) showed that the optimal sterilization of black betel leaves was using a fungicide solution for 30 minutes, 5% sodium hypochlorite solution for 10 and 15 minutes, vinegar for 7 minutes, 70% alcohol for 10 minutes and PPM for 1 minute with a 22.1% of explants contaminated. Sterilization by rubbing the nodes under running water and the use of vinegar to sterilize black betel nodia resulted in a significantly lower percentage of contamination (73.3%, P<0.05) compared to the method where the leaves were not cleaned by rubbing under running water and no vinegar.
Comparison of Antioxidant Activity and Chemical Profile between Green Tea Kombucha with Green Tea and Rosela Combination Kombucha Gerda Pintoko Tunjungsari; Retno Aliyatul Fikroh
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.
Eksplorasi Mikroflora Alami Produk Fermentasi Tradisional Cangkuak Berbasis Daging di Kecamatan Kuantan Mudik Kabupaten Kuantan Singingi Adela Putri; Nurmiati Nurmiati; Periadnadi Periadnadi
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.v12i1.11216

Abstract

Cangkuak is a fermented food made from meat with betung bamboo shoots or kluwak, salt and rice. The fermentation process is carried out without adding microbial cultures (spontaneous) for one to three weeks in a tightly closed container. cangkuak's manufacturing technique, ingredient formulation and constituent ingredients are unique, resulting in a final product with different characteristics. Research on the presence of microbes in fermented food products (fish, milk, vegetables) has been widely conducted, but information on exploring the presence of natural microflora and the in vitro potential of fermenting bacteria in cangkuak has never been reported. This research was conducted using a survey method and the resulting data were presented descriptively. It was found that the natural microflora found in the three samples of cangkuak in Kuantan Mudik was dominated by bacteria, with the highest proportion of bacterial groups in the three cangkuak samples being fermentative bacteria (2.0 - 6.30x105 cfu/g), cellulolytic bacteria (3.30 - 5.90x105 cfu/g), amylolytic bacteria (1.70 - 4.40x105 cfu/g), proteolytic bacteria (0.12 - 7.90x105 cfu/g), lipolytic bacteria (0.08 - 0.12x105 cfu/g). Six potential fermentative isolates were obtained as evidenced by the calculation of index values, namely DK-I1 (1.59), DR-I1 (1.36), DR-I2 (2.49), DR-I3 (1.19), DKR-I1 (2.41), and DKR-I2 (2.96).
Inovasi Grafting Mangga Dodol (Mangifera indica L.) Berdasarkan Tipe Mata Tunas dan Panjang Entres Fiktor Imanuel Boleu; Oktosea Buka; Davidson Corneles Nusa; Vanhurd Samloy
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.
Pengaruh Penambahan Nutrient (NPK dan Pupuk Urea) terhadap Bioethanol Hasil Fermentasi Biji Alpukat (Persea americana Mill.) Zakyya Septiana Putri; Aceng Ruyani; Mellyta Uliyandari; Rendy Wikrama Wardana; A. A. Sukarso
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.v12i1.11283

Abstract

Bioethanol is an energy source obtained through fermentation. In bioethanol production, Persea americana seeds are used as a fermentation medium because they contain lots of carbohydrates. This research aims to determine the effect of additional nutrients (NPK and urea fertilizer) required by Saccharomyces cerevisiae by varying the nutritional variables in the form of NPK and urea fertilizer. The process of making bioethanol goes through stages: making Persea americana seed flour, hydrolysis process using 6% HCl, then fermentation process, and distillation process. This research was carried out with the addition of Nutrients in the form of NPK and Urea Fertilizer with 5 treatments, namely: A) 100% yeast (no addition of Nutrients); B) 100% NPK (4 g); C) 100% Urea Fertilizer (4 g); D) 50% NPK and 50% Urea Fertilizer (4 g NPK and 4 g Urea Fertilizer); and E) 75% NPK and 25% Urea Fertilizer (3 g NPK and 1 g Urea Fertilizer), and varying the length of fermentation time to 13, 19, and 25 days. Success parameters are assessed through the bioethanol yield produced by each treatment. The research results showed that the highest bioethanol (29.7 ± 0.47%) was composition E (NPK 75% and Urea Fertilizer 25%) with a fermentation time of 25 days.
Analisis Kelayakan E-Magazine pada Submateri Peranan Bakteri Kelas X SMA Rara Sania; Laili Fitri Yeni; Anisyah Yuniarti
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.v12i1.11192

Abstract

This study aims to analyze the feasibility of an e-magazine on the inhibitory activity of Pontianak's siam orange peel extract against Bacillus cereus in the subtopic of bacterial roles. This research employs a quantitative descriptive method with several stages including e-magazine development, e-magazine validation, and data analysis. Validation activities consist of instrument validation by 2 validators and media validation by 5 validators. Validation was conducted using a closed-ended questionnaire validation sheet. E-magazine media validation assesses three aspects: format, content, and language. The validation results were analyzed using Aiken’s V formula and reliability testing using the Intraclass Correlation Coefficient (ICC). The study shows that the developed e-magazine meets Aiken’s V standard with a score of 0.92 and a reliability coefficient of 0.893, categorized as good, thus suitable for use as a learning medium. This e-magazine is complemented with appealing visualizations to provide a unique learning experience for students studying the bacterial roles subtopic.

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