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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 1,439 Documents
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Struktur Komunitas Fitoplankton di Sungai Teluk Nibung pada Kawasan Mangrove Kecamatan Batu Ampar Kabupaten Kubu Raya Qairunisa, Maya Rahmadanty; Daningsih, Entin; Candramila, Wolly
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.v12i1.9910

Abstract

Teluk Nibung River in Batu Ampar District, Kubu Raya Regency is a transportation route for Mangrove Production Forests and a traditional fishing area for local communities. The community structure of phytoplankton in the Teluk Nibung River has never been reported. As the main producer in the waters food chain, the structure community of phytoplankton indicates the quality of the fertility of the waters. The community structure of phytoplankton can be identified by measuring the index of abundance, diversity, evenness and dominance. The survey method was used at three stations in dry and rainy seasons. Sample collection is using net plankton (30 µm) and preserved in 4% formalin. The physico-chemical factors measured included temperature, pH, brightness, current velocity, salinity, dissolved oxygen and CO2, phosphate and nitrate. Once identified, phytoplankton calculations are performed to obtain abundance, diversity, evenness, and dominance values. The species number of phytoplankton found was 56 classified into 6 classes, namely Bacillariophyceae (34 species), Dinophyceae (12 species), Chlorophyceae (4 species), Cyanophyceae (3 species), Xantophyceae (1 species), and Euglenophyceae (2 species). The highest abundance of phytoplankton was in the Bacillariophyceae class with a range of 583 Ind./L at Station 2 in the rainy season to 3.922 Ind./L at Station 3 in the dry season. The diversity index at the three stations and both seasons is in the moderate category with a range of 2.31-2.46. The evenness index at the three stations and both seasons is in the high category with a range of 0.67-0.73. Low dominance level was found at the three stations and both seasons with values ranging from 0.14 to 0.19. Overall, the community structure of the phytoplankton in the Teluk Nibung River is in relatively good condition and can support the life of the aquatic biota in it.
Aplikasi Streptomyces sp. ASR 67 dan Pupuk Organik Cair dalam Mengendalikan Penyakit Layu Fusarium oxysporum dan Pemacu Pertumbuhan Tanaman Kentang (Solanum tuberosum L.) Varietas Granola Diharjo, Dewi; Fatmawati, Umi
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.v12i1.9924

Abstract

Demand for the Granola variety of potatoes continues to increase, but its productivity is not yet sufficient for market needs. This is due to the wilt disease attack on potatoes caused by the fungus Fusarium sp., thereby reducing potato productivity. The aim of this research was to determine the use of liquid culture of Streptomyces sp. ASR 67 and liquid organic fertilizer as an organic anti-fungal in controlling wilt disease caused by Fusarium oxysporum on potato plants (Solanum tuberosum L.). The research was carried out using a Randomized Group Design (RAK) method using five treatments. Each treatment was repeated five times and each repetition used one potato plant. Treatment was given by watering the potato growing medium for 30 days, which was done every three days. The results showed that administration of liquid culture of Streptomyces sp. ASR 67 10% combined with liquid organic fertilizer (1:9) was able to increase plant growth with the parameters of height, number of leaves, number of stems, weight of tubers significantly, while POC 2% and Streptomyces sp. ASR67 (1:1) is able to reduce the incidence of wilt disease best.
Uji Aktivitas Antibakteri Ekstrak Daun Bridelia micranth Lombok pada Escherichia coli Bayani, Faizul; Sudiana, Endang; Hamdani, Ade Sukma; Wahyuni, Ida; Mujaddid, Jamilul; Hulyadi, Hulyadi
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): 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.v11i2.9931

Abstract

The aim of this research is to identify the antibacterial activity of Bridelia micranth Lombok extract on the pathogenic bacteria Escherichia coli. The independent variable in this study was the concentration of Bridelia micrantha leaf extract. The concentration of Bridelia micrantha leaf extract in this study was varied from 20%, 40%, 60%, and 80%. The dependent variable is the ability of Bridelia micrantha leaf extract as an antibacterial. The antibacterial ability of Bridelia micrantha leaf extract was measured based on the diameter of the clear zone with three repetitions. As a comparison, an antibacterial is used, namely amoxicillin. Data analysis in this research was carried out descriptively, and then non-parametric tests were carried out to test the homogeneity of the data. In this study, the antibacterial ability of Bridelia micrantha leaf extract was discovered. At a concentration of 20%, the average diameter of the inhibitory zone was 2.5 mm which was categorized as none (resistance), 40% concentration was 9.83 mm in the non-existent category (resistance), 60% concentration was 13.66 in the weak category (intermediate), and at a concentration of 80% 16.5 mm is in the medium (sensitive) category. The research results indicated that Bridelia micrantha leaf extract had antibacterial activity against Escherichia coli bacteria. When compared with amoxicillin, the ability of Bridelia micrantha leaf extract as an antibacterial is still lower. Amoxicillin was able to inhibit the growth of Escherichia coli by 18.13 mm, while the highest ability of Bridelia micrantha leaf extract was 16.5 mm. Based on Ministry of Health regulations, antibacterials can be used if the inhibition zone is between 14-18 mm. So, Bridelia micrantha leaf extract can be used as an antibacterial, but it needs to be tested further before being applied to the public.
Pengembangan Kurikulum Diklat Budidaya Lebah (Trigonula sp.) untuk SMA, Mahasiswa, dan Umum Utami, Sri; Sulistyarsi, Ani; Winarsih, Eni; Widiyanto, Joko; Atmojo, Frihatnolo Pardani
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.v12i1.9942

Abstract

Universitas PGRI Madiun has provided assistance to MSMEs An-Nahl Madiun Group since 2020 until now. These assistance activities include hygienic packaging of beekeeping products, online and offline marketing. The impact of this assistance has made CV. An-Nahl Group is more advanced and known in the East Java region and throughout Indonesia. There are many visitors who want to learn about beekeeping from all walks of life, whether from the general public or an agency. Based on request from CV. An Nahl Madiun Group, the research team developed a bee cultivation training curriculum for high school students, students and the general public. This research is Research and Development (R&D) research using the Borg and Gall development model developed by Sugiyono (2016). There are 10 stages of R&D, namely potential problems, data collection, product design, design validation, design revision, product trials, product revisions, use trials, final stage product revisions, and mass production. This research adopts 8 R&D steps according to Sugiyono. The development steps we take include: 1) potential and problems; 2) data collection; 3) product design; 4) design validation; 5) design revision; 6) product testing; 7) product revision; and 8) limited production. The results of data validation analysis show a curriculum validity level of 83.65% (Quite Valid), with a feasibility level of "very feasible" (84.38%). So it can be concluded that the livestock cultivation training curriculum for high school students, students and the general public on CV farms. An-Nahl Madiun Group can be used.
Uji Aktivitas Antibakteri Kombinasi Ekstrak Etanol 70% Daun Jarak Pagar (Jatropha curcas L.) dan Daun Belimbing Wuluh (Averrhoa bilimbi L.) terhadap Bakteri Staphylococcus epidermidis Chaniago, Muhamad Shadam Gusbian; Yuliana, Agnes; Paramyta, Bunga Destiyana Anggun
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.v12i1.9947

Abstract

Staphylococcus epidermidis is a gram-positive bacterium that can cause acne. It is part of the normal flora found on the skin and is non-pathogenic. Metabolite compounds such as tannins, saponins, triterpenoids, and flavonoids present in starfruit leaves and castor leaves have antibiotic properties. The aim of this study was to determine the effectiveness of the combination of starfruit leaf extract and castor leaf extract, and to identify the most effective concentration ratio of these extracts in inhibiting Staphylococcus epidermidis bacteria. The research method used was experimental, conducting in-vitro antibacterial activity tests against Staphylococcus epidermidis. The results of the antibacterial test using a combination of starfruit leaf extract and castor leaf extract showed that at the highest ratio of 1:3, it produced an average inhibition zone of 15.73 mm against Staphylococcus epidermidis bacteria. This result was higher compared to the positive control Clindamycin HCl.
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%.

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