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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 68 Documents
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Search results for , issue "Vol 10, No 2 (2022): December" : 68 Documents clear
Produksi Bioetanol Limbah Nasi Aking Fermentasi Menggunakan Zymomonas mobilis dengan Perlakuan Konsentrasi Crude Enzim Bacillus amyloliquefaciens Sekar Widyastanti; Trianik Widyaningrum
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6249

Abstract

Bioethanol fuel has the advantage of being more environmentally friendly than petroleum. Bioethanol is made from organic materials containing glucose. Baking rice contains 83.19% (w/w) carbohydrates and 29.70% (w/w) amylose which can be converted into bioethanol through hydrolysis and fermentation stages. This type of research is an experimental research, the initial stage carried out is the hydrolysis stage to obtain reducing sugars using crude Bacillus amyloliquefaciens enzymes with concentrations of 0%, 2.5%, 5%, 7.5%, 10%, 12.5%, 15 %, and 17.5% for 6 days. The next step is the fermentation stage to convert reducing sugar into ethanol using Zymomonas mobilis at a concentration of 10% for 4 days. And the final result is the distillation stage and the calculation of bioethanol levels using an alcohol meter. During the hydrolysis and fermentation processes, the sugar content was measured using the DNS (Dinitrosalicylic acid) method and the highest average sugar content was obtained at 10% Bacillus amyloliquefaciens concentration, namely 1.417 g/mL. The highest bioethanol content obtained was 3.03% at 10% Bacillus amyloliquefaciens concentration and the lowest bioethanol content was 0.61% at 0% Bacillus amyloliquefaciens concentration.
Penerapan Model Pembelajaran Personal Digital Inquiry untuk Meningkatkan Literasi Informasi Siswa pada Materi Sistem Reproduksi Manusia Rival Arief Tyansha; Kusnadi Kusnadi; Widi Purwianingsih
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5707

Abstract

The 21st century is very closely related to science and technology, so the demands of human resources are needed in order to be able to master various forms of skills. Information literacy is a very important ability for everyone when they are in the realm of biology, especially students. However, most schools at the high school level, especially in Indonesia, often do not strategically prioritize the development of information literacy. The use of the Personal Digital Inquiry learning model on the material of the human reproductive system can be used as a way to provide students with information literacy.This research aims to analyze the effectiveness of the application of the Personal Digital Inquiry learning model in improving students' information literacy on the material of the human reproductive system. This research uses a quasi-experimental method. The research design used was a non-equivalent control group design. The sample in this research were two classes, namely students of class XI IPA, amounting to 35-40 people. The instrument used is a multiple choice information literacy test with 10 numbers related to the material of the human reproductive system. Based on the results of information literacy data obtained from the pretest and posttest scores, the experimental class experienced a higher increase than the control class. The results showed that the experimental class had a higher N-gain than the control class. This shows that the use of the Personal Digital Inquiry learning model is able to improve and train students' information literacy.
Struktur Komunitas Fitoplankton sebagai Indikator Kualitas Air di Kali Mas Kota Surabaya Kabul Fadilah; Muhammad Abdus Salam Jawwad; Syadzadhiya Qothrunada Zakiyayasin Nisa’
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6077

Abstract

Phytoplankton is an aquatic organism that is sensitive to environmental changes. Kali Mas is one of the rivers that passes through the city of Surabaya, and is a source of water needs for various domestic and industrial needs. The purpose of this study was to determine the status of Kali Mas water quality based on the phytoplankton community structure, which includes: diversity, abundance, evenness, dominance, and saprobic index. The method used in this study is purposive sampling. Water and phytoplankton samples were taken from 5 stations along the Kali Mas flow. The identification results of the phytoplankton found consisted of 10 classes, which consisted of: Bacillariophyceae (44.19%); Chlorophyceae (6.33%); Chrysophyceae (0.26%); Cyanophyceae (24.9%); Conjugatophyceae (7.49%); Dinophyceae (2.84%); Fragilariophyceae (1.29%); Trebouxiophyceae (8.14%); Ulvophyceae (3.18%); and ‎Xanthophyceae (0.65%). Diversity index ranged from 2.35-2.96; evenness index 0.72-0.87; and the dominance index is in the range of 0.05-0.148. Meanwhile, based on the saprobic index, Kali Mas is at 1.05. This value indicates the condition of Kali Mas waters is in β - Meso/oligosaprobic conditions with a mild level of pollution.
Optimasi Proses Pembuatan Tepung Pisang Termodifikasi terhadap Kadar Pati Resisten, Nilai Indeks Glikemik, dan Total Kalori Snack Bar Ihlana Nairfana; Qori'atul Fadilah
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5354

Abstract

Experimental research in the laboratory was carried out to obtain young kepok banana flour with high resistant starch which was then processed into snack bar products. Young kepok bananas obtained from Sumbawa Regency were treated with different retrogradation treatments, namely: P1 (1 time retrogradation process); P2 (2 times retrogradation process); P3 (3 times retrogradation process); and P4 (4 times the retrogradation process). The research data were analyzed using ANOVA, and each treatment that was significantly different was followed by Duncan's further test at the 5% level of confidence. Both of these analytical methods were processed using SPSS 25 software. The results showed that the retrogradation treatment (autoclaving-cooling) which was carried out repeatedly had a significant effect on increasing the resistant starch content produced in modified banana flour, with a value obtained in treatment P1 = 3.000% , treatment P2 = 4.567%, treatment P3 = 7.333%, and P4 = 11.333%. The P4 treatment was then chosen as a raw material for making snack bars because it has the highest resistant starch content. Testing the value of the glycemic index and total snack bar calories are then calculated. The glycemic index was analyzed through the ratio of area under the curve (area under curve) of food glucose response by measuring fasting blood glucose 0, and once every 30 minutes, namely 30, 60, 90, and 120 minutes after consumption of the test food (modified banana flour snack bar). ) and standard food (glucose water). The results of the Area Under Curve (AUC) for banana flour snack bars were 7.619 and the AUC for glucose was 11.841. The results of the glycemic index value of the modified banana flour snack bar were 42.2. Modified banana flour snack bar in 50 g contains a total of 89.3 Kcal calories.
Aplikasi Ekstrak Portulaca oleracea L. sebagai Biostimulan pada Pertumbuhan Kale (Brassica oleracea L. var acephala) Millania Putri Shayen; Zozy Aneloi Noli; Suwirmen Suwirmen
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5824

Abstract

Biostimulants are organic compounds which in small amounts can have a positive effect on plant growth. Plant extracts are a source of biostimulants which contain compounds such as secondary metabolites and other organic compounds that can enhance plant growth. Portulaca is a wild plant that contains secondary metabolites, amino acids, macro and micro nutrients which have the potential as a source of biostimulants. Kale is a vegetable from the Brassicaceae family which is known as a super food because of its health benefits. Efforts to improve the quality of Kale production need to be increased in line with public demand. This study aims to analyze the effect of giving several concentrations of Portulaca extract and its compatibility on Kale growth. The method used in this study was an experimental method with a completely randomized design (CRD) with 5 treatments and 5 replications. Some concentrations of Portulaca extract are as a treatment consisting of: A (0%); B (1.5%); C (3%); D (4.5%); and E (6%). The application of Portulaca extract had a significantly different effect on chlorophyll and total chlorophyll of Kale plants with the highest content of 0.822 and 1.462, but did not have a different effect on other growth parameters. Based on proximate analysis, increasing the concentration of Portulaca extract can increase the highest percentage of protein content, namely at a concentration of 6% by 23.75%.
Kepadatan dan Pola Persebaran Pauh Kijang (Irvingia malayana Oliv.) pada Habitat Orang Utan di Taman Nasional Gunung Palung Provinsi Kalimantan Barat Siti Nurbaiti; Irwan Lovadi; Rafdinal Rafdinal
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6274

Abstract

Gunung Palung National Park is one of the orangutan habitats on the island of Borneo. Based on previous research, it was reported that the Kijang Pauh plant (Irvingia malayana Oliv.) grows in this conservation area. Currently, research related to plant ecology is still very limited. This study aims to determine the density and distribution pattern of the Kijang Pauh plant. Data collection was carried out from July to August 2021 in three types of orangutan habitat, namely: sandy rock habitat, alluvial habitat, and fresh water habitat. The type of research used is descriptive quantitative, where the data is presented in tabular form. Data collection was carried out by making plots measuring 50 m x 20 m with random sampling method in three types of habitat. The results showed that the density of Irvingia malayana in sandstone, alluvial, and freshwater swamp habitats was 18 individuals/ha, 10 individuals/ha, and 12 individuals/ha, respectively. The distribution pattern of Irvingia malayana in the three habitats is even or uniform. Based on the research results that have been obtained, it can be concluded that the highest density values are found in sandstone habitats, and the lowest density values are found in alluvial areas with an even or uniform distribution pattern.
Profil Keterampilan Berpikir Kreatif Mahasiswa Pendidikan Biologi Universitas Tanjungpura dalam Mengelola Sampah menjadi Produk Titin Titin; Elsa Ferella; Ganis Sundawiyani
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5164

Abstract

The purpose of this study was to determine the profile of Tanjungpura University Biology Education students' creative thinking skills in developing an ideas for waste management into products. This research is a descriptive qualitative research type. The data in this study are in the form of response data in the form of a questionnaire. The results showed that the creative thinking ability in the fluency aspect was 58.48% in the sufficient category, the flexibility aspect was 63.01% in the creative category, the originality aspect was 61.48% in the creative category, and the elaboration aspect was 66.40% in the creative category. Based on the percentage, it was found that the aspect with the highest value was the elaboration aspect and the lowest value was in the fluency aspect.
Pengaruh Pemberian Ekstrak Rimpang Kunyit (Curcuma longa L.) terhadap Histologi Hepar Tikus Pasca Diinduksi Thioacetamide (TAA) Eva Tyas Utami; Dewi Syaibatul Aqlina; Susantin Fajariyah; Mahriani Mahriani
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6011

Abstract

Turmeric (Curcuma longa L.) rhizome contains antioxidant compounds that can prevent damage to the liver. Thioacetamide (TAA) is an organosulfur compound in the form of crystals and is widely used as a fungicide and organic solvent in the textile, leather and paper industries, as well as being used as a motor fuel stabilizer. Continuous exposure to TAA compounds can cause hepatocyte damage in the form of parenchymatous degeneration and necrosis. The purpose of this study was to determine the effect of turmeric (Curcuma longa L.) rhizome extract on the histological appearance of the rat (Rattus norvegicus) liver after being induced by TAA. This study used a completely randomized design (CRD) with 24 Wistar rats (Rattus norvegicus) which were divided into 4 groups, namely: K- (no treatment), K+ (TAA induced 200 mg/kg BW), D1 (TAA induced 200 mg/kg BW + administration of turmeric rhizome extract at a dose of 200 mg/kg BW), and D2 (TAA induction of 200 mg/kg BW + turmeric rhizome extract at a dose of 400 mg/kg BW). TAA induction was carried out intraperitoneally, while administration of turmeric rhizome extract was carried out by gavage. Preparation of liver histology preparations using the paraffin method and Hematoxylin Eosin (HE) staining to see liver damage including parenchymatous degeneration and necrosis. The results showed that administration of turmeric rhizome extract doses of 200 mg/kg BW and 400 mg/kg BW had a significant effect on decreasing the average number of hepatocytes undergoing parenchymatous degeneration and necrosis after being induced by TAA at a dose of 200 mg/kg BW.
Analisis Bakteri Coliform pada Budidaya Ikan Batak (Neolissochilus sumatranus) di Perairan Danau Toba Herna Febrianty Sianipar; Apriani Sijabat; Christa Voni Roulina Sinaga; Ewin Handoco; Mardame Pangihutan Sinaga; Tambos Sianturi
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5940

Abstract

Batak fish (Neolissochilus sumatranus) is an endemic fish to North Sumatra Province, especially in Lake Toba. Currently, Batak fish are categorized as endangered due to overfishing and their habitat is starting to be damaged, so conservation efforts need to be made, one of which is from microbiological analysis of water found in the aquatic environment in Batak fish farming. This study aims to determine the quality of water in Batak fish farming in terms of aquatic microbiology. This descriptive research was conducted in Lake Toba waters, using random purposive sampling at 4 stations, namely: Parapat, Ajibata, Gorat, and Haranggaol Lake Toba, North Sumatra Province. Microbiological analysis was carried out at the Water Resources Management Laboratory, Faculty of Mathematics and Natural Sciences, University of HKBP Nommensen Pematangsiantar. The results showed that the bacteria found in Batak fish farming in Lake Toba waters were fecal coliform bacteria with numbers at station 1 (360/100 ml), station 2 (830/100 ml), station 3 (1310/100 ml), and station 4 (1110/100 ml). In general, the quality of Batak fish aquaculture water does not meet water quality standards, because the content of fecal coliform bacteria is above the 1000/100 ml quality standard.
Analisis Kelayakan Usaha Tani Bawang Merah di Desa Kateng Kecamatan Praya Barat Kabupaten Lombok Tengah Nirmawati Nirmawati
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6432

Abstract

The purpose of this study was to know the income of farmers on shallot farming, ²to to know whether or not shallot farming is feasible or not to be carried out in Kateng Village Praya West District, Central Lombok Regency. The research method used to determine the sample is descriptive method to analyze the feasibility of onion farming analyzed by BEP and R/C Ratio. Determination of the sample is done by simple random sampling with a total sample of 20 people. Data collection in this study consisted of primary data and secondary data. The results of the study concluded that the average income of shallot farmers in Kateng Village, West Praya District, Central Lombok Regency was Rp. 2,703,000 with a land area of 0.31 Ha in one growing season. Based on the feasibility analysis of onion farming in Kateng Village, West Praya District, Central Lombok Regency, it was declared feasible to cultivate because R/C 1.30 > 1.

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