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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 103 Documents
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Search results for , issue "Vol 12, No 2 (2024): December" : 103 Documents clear
Pengaruh Perbedaan Suhu dan Waktu Pengeringan Terhadap Parameter Mutu Karagenan Dari Eucheuma spinosum Andayani, Rina; Andhiarto, Yanu; Muslikh, Faisal Akhmal; Widjaja, Bambang; Della, Desi Mujiastuti; Farida, Agustini
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.13583

Abstract

Carrageenan is widely used in various industries, such as food and beverages, cosmetics, and pharmaceuticals, due to its important role as a viscosity regulator, stabilizer, thickener, developer, gelling agent, and excellent stabilizing agent. Temperature and drying duration are important factors that affect the quality of the final product. This study aims to examine the quality characteristics of carrageenan from Eucheuma spinosum dried using the oven method, considering variations in temperature and drying time. This study used a completely randomized design (CRD) with two factors: temperature and drying time, each of which was repeated three times. Eucheuma spinosum was extracted using the microwave-assisted extraction (MAE) method with 10% KOH solvent in a ratio of 1:10 for 8 minutes. The first factor is the drying temperature, which consists of three levels: 40°C, 50°C, and 60°C. The second factor is the drying time, which also consists of three levels: 24 hours, 27 hours, and 30 hours. The results of the study showed that (1) temperature and drying time affect the quality characteristics of carrageenan from Eucheuma spinosum dried using the oven method, (2) the parameters affected include water content, ash content, sulfate content, viscosity, and gel strength of carrageenan, and (3) the higher the temperature and duration of drying, the more the water content, ash, protein, and crude fiber in the product tend to decrease. This decrease is in line with the viscosity and gel strength of the resulting carrageenan.
Formulasi Sediaan Sabun Cair Cuci Tangan Kombinasi Minyak Atsiri Daun Kemangi dan Minyak Atsiri Sereh Wangi serta Uji Aktivitas Antibakteri Dasmyta, Eny; Anwar, Yelfi; Maryana, Roni; Muryanto, Muryanto
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.12512

Abstract

Liquid hand soap is a cleaning product specifically designed to clean hands from dirt, oil, and microorganisms. The study aims to provide evidence of antibacterial efficacy with a combination of basil leaf essential oil and citronella essential oil on Escherichia coli and Staphylococcus aureus bacteria in hand washing liquid soap formulations. The type of research used is experimental. Essential oils were analyzed by GC-MS and then through formulation as hand washing liquid soap with each concentration of 1%, 1.5%, and 2%. The test results were evaluated, and analyzed using Two Way ANOVA and Post Hoc Tukey.The results of this study showed that the GC-MS test on basil leaf essential oil showed 2 main compounds were detected, namely Estragole (55.80%) and Linalool (22.35%), while in citronella essential oil 3 main compounds were detected, namely Geraniol (26.49%), Citronellol (14.53%), and Citronellal (10.95%). And the results of antibacterial activity tests against Escherichia coli bacteria show each inhibition zone FI 9.32 mm, FII 10.72 mm, and FIII 14.45 mm. While against Staphylococcus aureus bacteria showed each inhibition zone FI 8.75 mm, FII 10.42 mm, and FIII 13.57 mm. For stability tests with temperature (2-8oC) and room temperature (20-25oC), the hand washing liquid soap formulation does not show homogeneous changes, organoleptic preparations, has a pH range of 8.87 - 9.04, has a viscosity consistency that has met the standards between 400-4000 cPs, foam height that meets the standards between 13-220 mm and does not cause irritation to the hands. In brief, the formulation is stable in both temperature (2-8oC) and room temperature (20-25oC) with strong inhibition at 2% concentration.
Induksi Pertumbuhan Tunas Tanaman Manggis (Garcinia mangostana L.) Secara In Vitro Asri, Elita; Harahap, Fauziyah; Hasairin, Ashar
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.13681

Abstract

This study aims to determine the effect of plant growth regulators and seed cutting patterns on the induction of mangosteen shoot growth. The research was conducted at the YAHDI Tissue Culture Laboratory in Medan, North Sumatra, Indonesia, in 20245. The method used in this study was a Completely Randomized Design (CRD) with two factors: BAP concentration and seed cutting pattern. The data collected were analyzed using statistical analysis of variance (ANOVA) with Duncan's Multiple Range Test (DMRT) at a 5% significance level using SPSS 26. The results of the study show that the interaction between BAP concentration and seed cutting pattern significantly affected the time of shoot emergence, the number of leaves, and the shoot height. The best shoot emergence time was obtained with a BAP treatment of 4 mg/L using whole seed explants, which occurred at 1 MST (Month After Sowing). A BAP concentration of 2 mg/L with whole seed explants produced the highest number of leaves, with 8 leaves. The highest number of shoots was obtained from explants planted in a medium with 6 mg/L BAP, which resulted in 5.67 shoots. Whole seeds planted in a medium with 0 mg/L BAP produced the tallest plants, measuring 8.9 cm. The combination of BAP concentration and seed cutting pattern did not significantly affect the number of roots.
Aktivitas Antidiabetes Ekstrak Etanol Daun Bidara Pada Tikus Dengan Induksi Streptozotocin Wahyuni, Kumala Sari Poespita Dewi; Mawardika, Herlinda; Sabban, Indra Fauzi
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.13070

Abstract

Type 2 Diabetes Mellitus is a global health problem that continues to increase, requiring safer and more effective alternative therapies. Bidara leaves have been known to have bioactive compounds that are useful as antioxidants, antimicrobials, and antidiabetics. This study aims to determine the potential of bidara leaf extract in lowering blood sugar in diabetic rats. This study is an experimental research with four treatments. This study includes the manufacture of bidara leaf extract through the maceration method, phytochemical screening, and testing of antidiabetic activity in STZ-induced animal models. Blood sugar levels were measured before and after the intervention. The results showed that (1) bidara leaf extract contains flavonoids, tannins, saponins, steroids, and quinones; (2) Giving extracts with various concentrations for 42 days can reduce blood glucose levels in rats; (3) Bidara leaf extract at a dose of 400 mg/ml showed higher activity than other doses. Thus, it can be concluded that 70% ethanol extract of bidara leaves can be used to treat type 2 diabetes mellitus.
Meningkatkan Hasil Belajar Peserta Didik melalui Model Problem Based Learning Berbasis Powtoon pada Materi Sistem Pernapasan Filza, Inne Aqmarina; Ningsih, Kurnia; Yuniarti, Anisyah; Titin, Titin; Wahyuni, Eko Sri
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.11902

Abstract

Educators utilise learning models and media to improve students’ understanding of the material. This study aims to enhance students’ learning process and learning outcomes by using the Powtoon-based Problem Based Learning paradigm on respiratory system information. This research is a Classroom Action Research with a two-cycle design. Each learning cycle includes planning, implementation, observation, and reflection stages. The research subjects were students of SMP Negeri 12 Sungai Raya class VIII B in the 2023/2024 school year, with a sample size of 29 people. The instruments of this study were observation sheets and learning outcome tests. The purpose of the test sheet is to measure students’ understanding of the material discussed in class, while the observation sheet sees how well the learning objectives are achieved. The data collection strategies used in this study were tests, observations, and documentation. The results of the learning implementation process were obtained at 92.26% in cycle I and 95.64% in cycle II. Student learning outcomes increased by 86.20% in cycle II from 77.59% in cycle I. Therefore, it can be concluded that learning using the Powtoon-based Problem Based Learning model can improve the learning implementation process and student learning outcomes on respiratory system material.
Evaluating the Efficacy of Topical Moringa Oleifera and Aloe Vera Extracts in Accelerating Second-Degree Burn Wound Healing Fauziah, Dwi Nur; Ramadani, Nur Laili; Moniz, Argita Agnesia; Syafitri, Wahyu Fauziah Iga; Humairah, Sandrina; Pradipta, Rifky Octavia
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.13071

Abstract

Burn injuries are a global health issue, particularly second-degree burns, which damage both the epidermis and dermis. This has led to the exploration of natural treatments like Moringa oleifera (moringa) and Aloe vera for their potential in wound healing, pain relief, and infection prevention. This study aimed to evaluate the efficacy of a topical formulation containing extracts of Moringa oleifera and Aloe vera in accelerating the healing of second-degree burn wounds. This study employed a true experimental design with Sprague Dawley rats, divided into four groups (control positive, control negative, and two treatment groups). The experiment utilized topical formulations combining different concentrations of Moringa oleifera and Aloe vera extracts. The wound healing process was assessed through macroscopic observation and histopathological analysis, measuring the diameter of the burn wounds at different time intervals. Results showed that formulations containing Moringa oleifera and Aloe vera extracts significantly improved wound healing compared to the control group. The formulation with a 50:50 ratio of Moringa oleifera and Aloe verademonstrated the highest efficacy, reducing wound size and promoting fibroblast proliferation and vascularization. This study confirms the potential of a topical combination of Moringa oleifera and Aloe vera extracts in accelerating the healing of second-degree burns.
Development of Tissue Culture Textbook Based on Project Based-Learning to Improve Science Process Skills of Biology Department Students Universitas Negeri Medan Harahap, Salamah; Harahap, Fauziyah; Hasanah, Dwi; Sembiring, Gres Anjelia; Panggabean, Syakilah Kurnia Fahmi; Nadhilla, Annisa; Suriani, Cicik; Edi, Syahmi; Daulae, Abdul Hakim
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.13786

Abstract

The research on the development of this textbook was carried out based on the results of the analysis of student needs, namely that there are no teaching materials that can improve students' science process skills in the Tissue Culture course at the Department of Biology, State University of Medan. This textbook is compiled based on the learning syntax of Project-Based Learning (PjBL). This study aims to develop a Project-Based Learning-based tissue culture textbook to improve students' science process skills. This research method uses the Research and Development (R&D) with Thiagarajan's 4D (Define, Design, Develop, and Disseminate). The population of this study was students of the Biology Department of Universitas Negeri Medan with a sample of 47 people who were given a PjBL-based tissue culture textbook. The results showed that (1) the textbooks have been tested for feasibility by material experts (87,73) (2) instructional design experts (92) with a very feasible category, (3) the response of tissue culture lecturers (92) and (4) students based on individual tests (95.1), small group tests (93,75), and limited group tests (90.02) with a very good category and (5) the results of the calculation of N-Gain for science process skills were obtained at 0.66 which is in the medium category.
Ekstraksi Gelatin Dari Tulang Ikan Layah Secara Asam Sebagai Alternatif Gelatin Halal Kurnia, Nova; Rohmatillah, Laila Mardiana; Ilyas, M.Ali; Muhazam, Muhazam; Sumarlin, Muhamad; Fatinah, Fenny Inas
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.13956

Abstract

Gelatin is a food additive that is widely used in the food, medicine and cosmetics industries. However, the source of gelatin is not only the bones and skin of halal animals such as cows and goats, but can also come from pigs. To fulfill the need for halal gelatin, it is absolutely necessary to search for other sources of halal gelatin, one of which is sea fish. This study aims to extract gelatin from the bones of sailfish as an alternative source of halal gelatin. The extraction process was carried out using an acid method, where fish bones were soaked in 3% acetic acid (1:10 w/v) for 48 hours. The resulting ossein was then washed with diluted NaOH and distilled water until the pH reached 6–7. The ossein was heated at a temperature of 80°C for 3 hours to obtain a gelatin solution. The gelatin solution was then cooled, producing a gel-like gelatin preparation with a yellowish-white color. The gelatin gel was subsequently dried in a furnace at a temperature of 40–50°C for 60 minutes. The final gelatin product was a yellow-colored powder.
Relationship Between Diet and Gangrene Degree in Diabetes Mellitus Patients Tasya, Aisya Medina; Handayani, Astri
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.13393

Abstract

Diabetes Mellitus (DM) is a metabolic disease characterized by hyperglycemia caused by defects in insulin secretion, insulin action, or both. The number of people with DM has increased to approximately 463 million individuals aged 20-79 worldwide. Several complications can arise due to DM, one of which is gangrene wounds. Gangrene wounds are the most common microvascular complication in DM patients. Nutritional intake is a crucial component in the wound healing process. The aim of this study is to determine the relationship between diet and the degree of gangrene in DM patients. The method used is an observational analytical approach with a cross-sectional design. The sample size consists of 51 respondents obtained from medical records and questionnaires filled out by DM patients. Data analysis was conducted using the Chi-Square test. The results showed that 23 respondents had a moderate diet (45.1%), and the majority of respondents had wounds classified as degree 3 (21.6%). A significant relationship was found between diet and the degree of gangrene in DM patients (p<0.005). Thus, it can be concluded that a significant relationship exists between diet and the degree of gangrene in DM patients
Hubungan Anemia, Tingkat Stres, Aktivitas Fisik, dan Konsumsi Makanan Cepat Saji dengan Kejadian Dismenore Primer Pada Siswi SMA IT Putri Abu Hurairah Mataram Nirmala, Suci; Novitasari, Novitasari; Rahadianti, Dian; Sudiarta, I Gede
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 2 (2024): December
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.v12i2.14163

Abstract

Dysmenorrhea is severe pain in the lower abdomen during menstruation. Dysmenorrhea is one of the health problems that has a high incidence rate worldwide. The purpose of this study was to determine the relationship between anemia, stress levels, physical activity and fast food consumption with the incidence of primary dysmenorrhea in SMA IT Putri Abu Hurairah Mataram. This research is an observational analytic quantitative research with a cross-sectional study design. The population of this study were all 374 students of SMA IT Putri Abu Hurairah Mataram. The research instruments used were questionnaires in the form of WaLLID score questionnaire, DASS questionnaire, International physical activity questionnaire short form (IFAQ-SF), and Food Frequency Questionnaire (FFQ). Data were analyzed using Spearman, univariate, and bivariate tests. The results showed that (1) there was no significant relationship between anemia and primary dysmenorrhea; (2) there was a significant relationship between stress level and primary dysmenorrhea; (3) there was a significant relationship between physical activity and primary dysmenorrhea; (4) there was a significant relationship between fast food consumption and primary dysmenorrhea.

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