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Jurnal Pijar MIPA
Published by Universitas Mataram
ISSN : 19071744     EISSN : 24601500     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
Jurnal Pijar MIPA (e-ISSN: 2460-1500 & p-ISSN: 1907-1744) is an open-access scientific periodical journal published by the Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA publishes original articles on current issues and trends in mathematics-science-science education studies. In addition, this journal addresses issues concerning environmental education and environmental science. The journal scopes are: a. Physics and Physics Education b. Chemistry and Chemistry Education c. Biology and Biology Education d. Natural Science and Science Education e. Mathematics and Mathematics Education f. Environmental and Environmental Education
Arjuna Subject : Umum - Umum
Articles 30 Documents
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Search results for , issue "Vol. 19 No. 1 (2024): January 2024" : 30 Documents clear
Phytochemical Screening and Nanoherbs Synthesis of Ethanol Extract of the Butterfly Pea Flower (Clitoria ternatea L.) with its Characterization Achrifa, Silfia Indah; Suyatno, Suyatno
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6125

Abstract

Every plant has a different secondary metabolite content, influenced by the location and conditions where the plant grows. Preparations from the butterfly pea flower (Clitoria ternatea L.) extract form have poor bioavailability. One effort to overcome this problem is by formulating it into nanoherbs form. This research aims to determine the phytochemical content and synthesize nanoherbs ethanol extract of butterfly pea flowers. The butterfly pea flowers were extracted using the maceration method, and the resulting thick purplish blue extract was 145.254 grams. The thick extract was analyzed for secondary metabolite content using phytochemical screening, and it was found to contain alkaloids, flavonoids, saponins, triterpenoids, and tannins. Nanoherb synthesis uses the ionic gelation method with an alginate polymer and a CaCl2 cross-linking agent. The synthesis result is a purple nanoherbs colloid with optimal variations in the ratio (10:1). The synthesized nanoherbs were characterized using PSA and obtained particle size results from the optimal variation of 220.4 nm, polydispersity index 0.2550, and zeta potential of -22.5 mV.
Students Perception of Science and Technology in Science Learning: A Gender Comparative Study Putri, Atila Ledia; Pranata, Ogi Danika; Sastria, Emayulia
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6153

Abstract

Teachers face a dilemma. On the one hand, science and technology significantly benefit students, providing greater opportunities for future generations. On the other hand, students' interest in science and technology continues to decrease. The rapid advance of science and technology also widens inequities and enhances gender differences. Understanding students' perceptions of technology in learning, especially science, and their daily lives is necessary. The research employs both descriptive and comparative methods as its primary methodologies. The descriptive method provides an overview of students' perceptions of science and technology. The comparative method helps uncover differences in students' perceptions based on gender. The study encompasses 200 participants from a junior high school in Kerinci. This research utilized the "My Opinions about Science and Technology" questionnaire. The questionnaire was translated into Indonesian and formatted into an online survey using Google Forms. It comprises 16 research statements about science and technology designed to collect essential data, employing a 4-point scale response. The Independent Samples T-test, facilitated by SPSS, compared male and female perceptions of science and technology. The descriptive statistics reveal that the average student perception is 3.06. Based on the level of each student, no students are categorized as having a low level of perception of science and technology. Based on gender, female students exhibit an average perception of 3.02, and males display an average of 3.11. Based on the mean or average values, it can be concluded that there is a difference in the average perception between female and male students, with male students showing a higher perception of science and technology than female students. The independent samples t-test results confirm that the average perception of females regarding science and technology is lower than that of males, with a mean difference of -0.093 on a 4-point scale. The disparity in perception based on gender was found to be statistically significant. Male students have a higher percentage of high-level perception compared to female students. Males exhibit high perceptions regarding the development of scientific theories, the impact of science and technology on environmental problems, and the potential for science and technology to improve life, create more interesting jobs and help eradicate poverty and famine. The theoretical and practical implications of these results are discussed.
Developing a Mutually Cooperative Attitude and Science Process Skills Through Experiential Learning Novitasari, Cindy; Subekti, Hasan
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6167

Abstract

Experiential learning is learning that applies learning through action, learning through activities, learning through experience, and learning through discovery and exploration. Science process skills are skills that students need to have because they are closely related to intellectual skills. Gotong royong is an activity that is done together. A group does it to complete a task or work considered useful for the common interest or welfare. This study aimed to determine the effect of the experiential learning model on science process skills and students' cooperation attitudes. The research design used was one group pretest-posttest, applied in one of the junior high schools in the Sumberrejo sub-district. Data collection techniques include tests and response questionnaires. Based on the average n-gain score of all indicators, the study results obtained a score of 0.72 with a high category. The highest increase in the indicator of making conclusions was an increase in the n-gain score of 0.75. The mutual cooperation questionnaire obtained an average percentage of all indicators of 88%. The helping indicator obtained the highest percentage, with a percentage of 90%. The analysis results of the gotong royong questionnaire show an increase in all indicators, with a high average value. Empathy and human values play an important role in improving helping attitudes. Based on the analysis of this research, it can be concluded that using an experiential learning model in learning can improve students' science process skills. The experiential learning model also effectively fosters an attitude of gotong royong in students.
Hepatoprotective Effects of Balinese Grape Extract (Vitis vinifera L.) on Hepar Histology and Reducing Blood Sugar Levels Damayanti, Ida Ayu Manik; Wicaksana, I Gusti Agung Tresna; Sutrisna, I Putu Gede
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6198

Abstract

This study aimed to determine the hepatoprotective activity of grape skin extract (Vitis vinifera L.) (BGE) on hepatic histology and blood sugar level reduction. This study was conducted in four stages: extraction of grape skin using 96% ethanol, phytochemical screening, antihyperglycemic activity test and hepatoprotective activity test. The experimental animals were divided into five groups consisting of negative control (Na CMC 0.5%), positive control (Curcuma), TI (100 mg BGE/kg BW), TII (300 mg BGE/kg BW), TIII (500 mg BGE/kg BW). Phytochemical screening showed that BGE positively contains terpenoids, flavonoids, tannins, saponins and carotenoids. The results of antioxidant analysis on BGE showed an IC50 value of 80.77 ppm, which included intense antioxidant activity. BGE and negative control can provide hepatoprotector effects on hepatic cells from hepatocyte cell damage due to paracetamol and can reduce blood sugar levels.
Effectiveness of Eco Enzyme for Inducing Flower Growth in Dendrobium Sonia-ersakul Orchids Azuhro, Vionika; Dzakiy, M. Anas; Minarti, Ipah Budi
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6217

Abstract

Orchid plants are ornamental plants with various shapes, colors, and sizes, exhibiting unique characteristics that make them a special attraction for enthusiasts of ornamental plants. Among them is the Dendrobium orchid, which belongs to the genus of orchids known for its diverse types and beauty. Enhancing the growth and quality of Dendrobium Sonia-ersakul orchid flowers can be achieved through proper fertilization. The fertilizer in this research is derived from liquid organic fertilizer, Eco Enzyme. This research aims to assess the impact of Eco Enzyme on the induction of flowering growth in Dendrobium orchids. This research was carried out at CV Candi Orchid, 17 Bukit Unggul Raya Street, Semarang, over three months, from May to July 2023. The research design employed in this research is the two-tailed t-test research method, which includes a control group and an experimental group treated with 0.2% Eco Enzyme. There were two combinations, with each treatment comprising six replicates. The measured variables included the number of roots, root length, buds, and panicles. The outcomes indicated that the application of Eco Enzyme led to a significant increase in the number of panicles compared to the control group. However, no significant differences were observed in root length, the number of new roots, or the number of buds when Eco Enzyme was applied.
Antioxidant Potential of Jicama (Pachyrhizus erosus) Extract Fermented by Lactobacillus plantarum B1765 Aji, Ardika Prasetya; Wikandari, Prima Retno
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6218

Abstract

Jicama is a source of phenolic compounds that function as antioxidants. However, the presence of polyphenol oxidase and naturally bound phenolic compounds limits its antioxidant potential. Fermentation is one method to enhance the antioxidant potential of jicama. This study investigates the growth of lactic acid bacteria (LAB), pH, total titratable acidity (TTA), total phenolic content (TPC), and antioxidant activity of jicama extract (Pachyrhizus erosus) using L. plantarum B1765 as a starter culture which was fermented for 2, 12, 24, and 36 hours at 37°C. Total LAB is measured using the whole plate count technique, pH using a pH meter, TTA by acid-base titration, TPC using the Folin-Ciocalteu method, and antioxidant activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method represented by IC50. The fermentation duration of jicama extract increased the growth of LAB to 108 CFU/mL and reached its optimum at 12 hours. However, reducing pH, increasing TTA to 0.223%, increasing TPC, and antioxidant activity still occur up to 36 hours of fermentation. Antioxidant activity was classified as vital. Duration of fermentation increased the growth of total LAB until the defined time, secreted β-glucosidase and inulinase enzymes, and also produced acid as their metabolism product, which hydrolyzed the glycoside bond and reduced pH, both act to free phenolic and increased antioxidant activity. This product has met Indonesian National Standards for beverage-fermented types and could be an antioxidant agent.
Antioxidant Activity, Phenolic, and Total Flavonoid Value of Balinese Trengguli Flower (Cassia fistula) Harditya, Kadek Buja
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6222

Abstract

The Balinese trengguli flower (Cassia fistula), found in the northern part of Bali, is known to contain flavonoids and phenols, one of the sources of natural antioxidants that can reduce the effects of free radicals. This study aimed to extract the powder of trengguli flower with ethanol and measure the total flavonoids and phenolics. Furthermore, the antioxidant activity of the ethanol extract of Trengguli flower (EEBTF) was investigated. The filtrate was concentrated with a rotary evaporator after soaking the Trengguli flower powder in ethanol. Total phenolic and flavonoid levels were measured using UV-Vis spectrophotometry. Diphenyl-1-picrylhydrazyl (DPPH) technique was used to determine antioxidant activity. This study shows that Balinese trengguli flower extract has the highest antioxidant activity for a concentration of 100 mg/L with a DPPH radical inhibition percentage value of 87%. In this research, the ethanol extract of the Balinese trengguli flower has secondary metabolites of flavonoids and phenolics. The ethanol extract of Balinese trengguli flower has a flavonoid content of 8.35 mg QE/g and a total phenolic content of 8.12 mg GAE/g.
The Influence of the Guided Inquiry Learning Model on Students Ecoliteracy Attitudes on Waste Recycling Materials Sentosa, Zill Sekar Gading Fawwaz; Marjanah; Setyoko
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6261

Abstract

Ecoliteracy is the concept of a comprehensive understanding of ecosystems and their environment. The low ecological intelligence or ecoliteracy of students is the background of this study. This study aims to test whether the guided inquiry learning model affects students' ecoliteracy attitudes and how students' ecoliteracy attitudes through guided inquiry learning models on waste recycling materials. The research method used is an experiment with a quantitative approach. The population in this study was the entire class X MIPA SMA Negeri 1 Stabat, which amounted to 216 students. The sample used was random sampling, namely class X MIPA-1 students as an experimental class and class X MIPA-3 as a control class with 72 students. The research only focuses on attitudinal aspects of ecoliteracy competence. Research data were collected through the distribution of questionnaire sheets and observations. The results showed that the average ecoliteracy attitude of students taught using the guided inquiry learning model reached 87.2% in the good category. Meanwhile, the average ecoliteracy attitude of students taught with conventional learning models is 62.7% with sufficient categories. Hypothesis testing is done manually. Experimental class students have a higher percentage of ecoliteracy than control class students. Guided inquiry learning in waste recycling materials is more efficiently used to determine the improvement of students' ecoliteracy attitudes.
The Effect of Liquid Organic Fertilizer of Shallot Skins and Compost of Coconut Dregs on the Growth of Mint Plant (Mentha piperita L.) Cuttings Shahra, Farah Diba; Jayanthi , Sri; Atmaja, Teuku Hadi Wibowo
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6263

Abstract

Mint (Mentha piperita L.) belongs to the Lamiaceae family, whose essential oil is used as a flavouring agent and to treat diseases. The low productivity of mint plants is because the nutrients in the planting medium do not support growth efforts made through fertilization. Two organic materials that can be used as fertilizer are shallot skin and coconut dregs. This study aimed to determine the effect of liquid organic fertilizer on shallot skins and coconut dregs compost and the most optimal treatment for the growth of mint plant cuttings (Mentha piperita L.). This type of research was quantitative with an experimental method using a completely randomized design (CRD) factorial consisting of 2 factors, namely red onion skin liquid organic fertilizer and coconut dregs compost, each consisting of 3 levels so that the treatment combination consisted of 9 treatments with as many repetitions as three times. Data analysis in this study used the Kruskal Wallis test with SPSS. The results showed that it had a very significant effect on wet weight and a significant effect on the number of leaves on the growth of mint cuttings (Mentha piperita L.). The best treatment for each observation parameter was wet weight BM1AK2 (13 grams), number of primary branches BM1AK2 (2.67), plant height BM2AK1 (26.5 cm) and number of leaves BM2AK1 (27.33 strands).
Need Assessment for Developing Learning Modules Based on Discovery Learning Ecosystem Materials Geni, Rangga; Sumah, Astrid Sri Wahyuni
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i1.6295

Abstract

The scientific approach is a form of character education integrated into learning activities. The success of implementing character values internalization learning is largely determined by the teacher's skills in selecting and implementing appropriate learning models. However, in reality, school teachers still do not apply learning models that suit the students' character, and the teaching materials used also do not support character internalization learning. So, this research aims to determine the characteristics of students and the type of materials and modules to be developed based on conditions in the field. This research uses qualitative research with a descriptive approach based on ongoing problems in class X SMA Bina Ilmi, Palembang City—techniques for obtaining data in the field, namely interview techniques, observation, and documentation. The research results showed that students were of an age that had entered the formal operational stage, understood abstract concepts, had high curiosity, and tended to like discovering new things. Meanwhile, the material analysis results showed three ecosystem materials that can stimulate students' curiosity: interactions between species, ecosystem components, and ecological pyramids. This material will be made into a teaching module based on discovery learning. This model-based module can make students build their knowledge through independent observation to increase students' reasoning power in developing environmental concepts following ecosystem material and learning resources that can provide interesting discovery concepts to explore curiosity to observe and process information in the learning process and understand ecosystem material.

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