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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 1,428 Documents
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Analisis Kemampuan Calon Guru dalam Menyusun Lembar Kerja Peserta Didik yang Membangun Keterampilan Abad 21 Sridana, Nyoman; Sukarma, I Ketut; Samsuri, Taufik; Gunawan, Rendi
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.v12i2.12472

Abstract

Students who are prospective teachers must adapt to the development of digital technology, especially its use in education. They are taught teaching practices with their peers before going directly into the field, as well as how to create learning tools. This research aims to analyze the ability of prospective teachers to develop student worksheets (LKPD) that foster 21st-century skills. This study is a qualitative descriptive research involving 14 student teachers as subjects. Data collection was conducted using assessment sheets. The results of the study indicate that (1) the LKPD created by the prospective teachers had an average score of 3.28, categorized as high; (2) the critical thinking aspect had an average score of 3.32, categorized as high; communication had an average score of 3.41, categorized as high; collaboration had an average score of 3.45, categorized as high; and creativity and innovation had an average score of 2.95, categorized as moderate. This shows that the prospective teachers are quite proficient in developing LKPD that build 21st-century skills.
Daya Hambat Ekstrak Kasar dan Fraksi Ekstrak Etanol Daun Gribong (Archidendron clypearia (Jack) I.C. Nielsen) Terhadap Bakteri Penyebab Jerawat Insyira, Rania; Lingga, Rahmad; Salmi, Salmi
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.v12i2.12480

Abstract

Acne is a dysbiotic condition caused by Cutibacterium acnes and Staphylococcus epidermidis bacteria. Gribong (Archidendron clypearia (Jack) I.C. Nielson) has been empirically used as a treatment for facial problems by the people of Bangka Belitung. This study aims to test the potential of ethanol extract and fractions of gribong leaves against two bacteria that cause acne. This study is an experimental research conducted in four stages, namely phytochemical testing, antibacterial activity testing, minimum inhibitory concentration testing, and minimum bactericidal concentration testing and equivalence tests against clindamycin antibiotics as positive controls. The results of this study showed (1) Secondary metabolites contained in 96% ethanol extract, ethyl acetate fraction and n-butanol fraction are phenolics, flavonoids, tannins and saponins. Terpenoids were only found in the ethanol extract. The ethyl acetate fraction found no alkaloids and the n-hexane fraction contained only steroids. (2) The 96% ethanol extract, ethyl acetate fraction and n-butanol fraction had antibacterial activity. (3) The highest antibacterial activity was shown by the ethyl acetate fraction with KHM on C. acnes at 0.375% and on S. epidermidis at 1% and KBM for both bacteria at 2.5%. (4) The equivalence value of antibacterial activity of fractions to antibacterial antibiotic clindamycin is still relatively low but still has good antibacterial activity. In conclusion, the ethanol extract and its fractions have potential as anti-acne against C. acnes and S. epidermidis bacteria.
Evaluation of Information Security at the Radin Inten II Lampung Meteorological Station Using the KAMI Index Ardiansyah, Ardiansyah; Irianto, Suhendro Yusuf; Hasibuan, M. Said
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.v12i2.12498

Abstract

Information security is a way to protect information assets from various potential threats. BMKG is a Non-Departmental Government Institution (LPND) in Indonesia whose main duties involve carrying out government duties in the fields of meteorology, climatology and geophysics. In connection with delivering information services appropriately and precisely to stakeholders, the Radin Inten II Lampung Meteorological Station needs to carry out an independent assessment in terms of security to evaluate the information system in each work unit, with the aim of understanding the level of readiness and maturity of information security. This research aims to measure the level of information security maturity at the Radin Inten II Lampung Meteorological Station. The analysis method used in this research is using the KAMI Index version 5.0 based on the ISO/IEC 27001:2022 standard. The research results indicate that the implementation of the ISO 27001:2022 standard in the information system of the Radin Inten II Lampung Meteorological Station is considered good. The total score obtained reached 591 based on analysis and questionnaires using the KAMI Index. With this score, the Radin Inten II Lampung Meteorological Station information system is categorized at level III, which indicates that some improvements are still needed.
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.
Isolation and Identification of Bacteria Producing Antibiotic Compounds from The Rhizosphere of Avicennia Marina Against Pathogenic Bacteria in The Mangrove Ecosystem Area of West Kalimantan Khairillah, Yuyun Nisaul; Alang, Hasria; Haryanto, Haryanto; Fitriagustiani, Fitriagustiani; Erwhani, Indri; Purnamawati, Ditha Astuti; Rahmawati, Annisa; Surtikanti, Surtikanti; Triwahyuni, Adelia
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.v12i2.12527

Abstract

Antibiotic resistance is a global problem in the health sector. The level of antibiotic resistance that occurs can be caused by several influencing factors, including 6 isolates of rhizosphere bacteria that were successfully isolated from the rhizosphere of the Avicenia marina plant. The purpose of this study was to isolate and determine the best minimum inhibitory concentration of rhizosphere bacteria of the A. marina plant and its effectiveness in inhibiting pathogenic bacteria S. aureus. This study is a quantitative research method using the isolation and characterization of rhizosphere bacteria, antagonistic test of rhizosphere bacteria and test of the results of the extraction of filtrate of rhizosphere bacteria culture of A. marina plants. The results of this study were (1) five of the isolates of bacteria that were successfully isolated were included in the Bacilus type and 1 isolate of bacteria included in the Cocobasil type; (2) there were 3 of the 6 isolates that could inhibit the growth of pathogenic bacteria S. aureus with an inhibition range of 10.04-4.42 mm; (3) Rhizosphere bacterial isolate (TN 1) is an isolate with the best inhibition diameter and is categorized as strong, namely 10.04 mm; (4) ethyl acetate extract of Rhizosphere bacterial isolate culture filtrate (TN 1), has a minimum inhibitory concentration of 0.50% against pathogenic bacteria S.aureus with an inhibition diameter of 7.18 mm which is better when compared to the positive control using chloramphenicol.
Wave Height Characteristics Due to The Influence of Land and Sea Breezes on Fishermen’s Activities in The Coastal Area of Makassar City Using Doppler Weather Radar Pertiwi, Dini Afiaty; Asbar, Asbar; Jamal, Muhammad
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.v12i2.12545

Abstract

Makassar City, located on the southwest coast of Sulawesi Island, exhibits dominant land and sea breeze circulation, with sea breezes being stronger during the day and land breezes at night. The use of weather radar is effective in identifying these wind characteristics, which are crucial for fishing activities and renewable energy. This study investigates the characteristics of land and sea breezes and their relation to wave heights in the Spermonde Waters of Makassar during the east and west seasons, providing important information for maritime activities in Makassar City. The research area is located between 4°59’20”S 119°27’46”E and 5°11’26”S 119°22’54”E. This study uses weather observation data, including weather radar data, weather observations, and wave heights from January 2020 to December 2020, divided into three seasonal periods (rainy season, transition period, and dry season). The weather observation data were obtained from Hasanuddin Makassar Meteorological Station and Paotere Makassar Maritime Meteorological Station. Additionally, questionnaires were distributed to fishermen at three locations: PPI Paotere Makassar, PPI Untia Makassar, and Kuri Caddi-Maros Beach Fishermen Village, with 15 respondents at each location. The study shows that land breezes in Makassar are dominant from 18:05 to 19:00 LT with a duration of 9.1 to 11 hours, while sea breezes dominate from 08:00 to 09:00 LT with a duration of 5.1 to 7 hours. This phenomenon is most frequently detected during the dry season (JJA). Land and sea breezes can intrude up to 20.1 to 30 km from the coastline. There is a highly significant positive correlation between wind and wave height in January and August, indicating a strong influence of winds on waves in the Spermonde Waters of Makassar. About 80% of fishermen utilize these wind conditions for fishing activities. Overall, the land and sea breeze patterns significantly impact wave heights and the activities of fishermen in the coastal areas of Makassar.
The Relationship Between Early Marriage and Parenting Styles for Children Aged 3-5 Years Yastutik, Baiq Wiwik; Sulaiman, Lalu; Khalik, Lalu Abdul
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.v12i2.12571

Abstract

This study aims to investigates the link between early marriage and parenting styles among parents of children aged 3-5 years in Awang Village, Central Lombok, Indonesia. This study employs an observational analytic design with a cross-sectional approach. Data were gathered from 42 mothers who married before the age of 20. The research instrument is a questionnaire to collect information about socio-demographic and parenting style information, categorized as democratic, authoritarian, and permissive. Data analysis was conducted in two stages: univariate and bivariate analysis. The results of this study are that (1) a significant association between early marriage and authoritarian parenting styles, with 55% of mothers who married at or below 15 years old displaying authoritarian behavior, and 80% exhibiting permissive tendencies, (2) democratic parenting was exclusive to mothers who married at 16 years or older. Higher education levels were linked to democratic parenting, (3) a significant relationship between early marriage and authoritarian parenting, proven by statistical analysis using Fisher’s Exact Test (p = 0.001). The results suggest that early marriage leads to less supportive and more controlling parenting practices, negatively impacting child development. Thus, addressing socio-economic factors and improving educational opportunities are vital to mitigating the adverse effects of early marriage on parenting styles and child development.
Pengembangan Lembar Kerja Peserta Didik Pada Materi Virus Untuk Kelas X SMA/MA Santi, Amelia; Nerita, Siska; Zural, Mimin Mardhiah
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.v12i2.12579

Abstract

The use of appropriate teaching materials is a very important factor in improving students' ability to understand a lesson. However, there are still lessons that use LKPD which only contain a collection of questions, so they are not able to increase student activity in learning activities. Therefore, teaching materials such as LKPD are needed that can meet students' needs. The aim of this research is to create an LKPD accompanied by practice questions on Class X SMA/MA virus material that is valid and practical. This type of research is research and development with a 4D development model. At the development stage, validation is carried out by validators and questionnaires regarding readability and practicality are given to teachers and students. The research instruments used were validity questionnaires, readability questionnaires and practicality questionnaires. The results of the study showed that the resulting LKPD has very valid criteria with a validity score of 95.66%, very readable with a readability score of 96.69% and very practical with practicality scores obtained from teachers and students of 90.19% and 94, respectively. 47%. Thus it can be concluded that the LKPD developed can be used in learning.
Penghambatan Xantin Oksidase Oleh Gel Ekstrak Takokak (Solanum torvum Swartz) Berbasis Nanoteknologi Secara In Vitro Dwiyansyah, Muhammad Imam; Insyira, Rania; Mirsa, Almira Maurilla; Sawalia, Azzara Gita; Nugra, Daffa; Salmi, Salmi
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.v12i2.12610

Abstract

Inhibition of xanthine oxidase is one of the strategies in handling gout. This study aims to explore the potential of takokak fruit extract (Solanum torvum Swartz) in inhibiting nanotechnology-based xanthine oxidase in the form of nanoemulgel. This research is an experimental study conducted in several stages, namely qualitative phytochemical tests, quantitative identification of total flavonoid content and preparation of nanoemulgel made with 3.75% extract with variations of surfactant Tween 80 and PEG 400, namely F1 (30:30), F2 (35:25) and F3 (40:20). The ability of the extract and nanoemulgel was evaluated in inhibiting xanthine oxidase. The results showed that the ethanol extract of takokak fruit contained flavonoids, saponins, phenolics and tannins qualitatively. The total flavonoid content in the extract was 4.472 ± 0.133 mgQE. Formulation F2 has the smallest particle size (18.5 nm) and polydispersity index of 0.1313. Takokak fruit extract has almost the same inhibitory power as allupurinol with an IC50 value of 45.54 ppm. The IC50 value of nanoemulgel 3.75% takokak extract is 29.26 ppm so that the IC50 of the extract in nanoemulgel form is 1.10 ppm (45 times the IC50 of the crude extract). In conclusion, Formula F2 is the best formula in the preparation of nanoemulgel with particle size and polydispersion index and strong xanthin oxidase inhibitory activity.
Efektivitas Fotokatalis Arang Untuk Mendegradasi COD, BOD, dan TSS Pada Limbah Tahu Buka, Oktosea; Nurhaedah, Nurhaedah; Kurnia, Kurnia
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.v12i2.12676

Abstract

The presence of tofu waste compounds in water results in pollution that can contaminate biota. A more effective, efficient, easy and cheap organic waste processing technique for the tofu industry is using the photocatalyst method. Photocatalysis is a combination reaction between photochemistry and catalyst with shell charcoal as a catalyst. This research aims to determine the levels of COD, BOD, and TSS in tofu waste before and after photocatalysis, and to determine the effectiveness of charcoal photocatalysis to degrade tofu waste. In the SEM (Scanning Electrone Mycroscope) test results, it was identified that charcoal has a fairly large and loose pore surface. The test results for the water content were 2.4% and the ash content was 11.45% and the ash content did not meet the charcoal quality standards according to SNI 01-1682-1996, the water content was 6% and the ash content was 3%. The FTIR absorption test results that appear indicate the presence of the O-H group, the C-H Streching functional group, the C ≡ N Nitrile functional group (strong), the C=C aromatic ring functional group which is a form of hexagonal charcoal, the C-O functional group and the presence of the C-H aromatic ring functional group. Test results before and after photocatalysis on Tofu waste for COD levels of 122mg/l and >>> mg/l, BOD 3567 mg/l and 2071mg/l, TSS 138 mg/l and 18 mg/l. The effectiveness of charcoal photocatalysis to degrade tofu waste was effectively used for BOD test parameters with a reduction percentage of 41.9%, TSS of 86.9% and for COD test parameters it was not effective for the photocatalyst method.

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