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All Journal Jurnal Penelitian Saintek Jurnal Sains Dasar Jurnal Keolahragaan Jurnal Pendidikan Biologi Indonesia Biology, Medicine, & Natural Product Chemistry Journal of Tropical Biodiversity and Biotechnology Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pengabdian Pada Masyarakat Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA AL-HAYAT: Journal of Biology and Applied Biology Molekul: Jurnal Ilmiah Kimia Kaunia: Integration and Interconnection of Islam and Science Journal Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Jurnal Edukasi Biologi Kingdom (The Journal of Biological Studies) Unnes Science Education Journal Jurnal Pendidikan Progresif Global Education : International Journal of Educational Sciences and Languages
Evy Yulianti
Univeristas Negeri Yogyakarta
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Efektivitas LKPD Elektronik dengan Problem Based Learning (PBL) dalam Meningkatkan Minat Belajar Siswa Eka Mustika Sari; Evy Yulianti
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.9307

Abstract

Increasing students' interest in learning is a key factor in achieving effective and optimal educational outcomes. One approach that can enhance students' learning interest is through the use of electronic student worksheets, which encourages students to actively engage in the learning process. This study aims to evaluate the effectiveness of electronic student worksheet based on Problem Based Learning (PBL) to enhancing students' learning interests. This research uses a one-group pretest-posttest design involving 27 students from the XI MIPA class at SMAN 1 Jetis, selected through random sampling. IBM SPSS 25 was used to analyze the data using the Wilcoxon test and N-gain. Following the intervention, students' interest in learning increased significantly, according to the study's findings, with an average pretest score of 48.11 and a posttest score of 64.15. The results of the Wilcoxon test indicated a significant difference between the pretest and posttest scores, with a significant value of 0.000 (p < 0.05). In addition, the N-gain results show an average percentage increase of 56.46%, which falls into the quite effective category.
The Potential of Red Algae Methanol Extract (Kappaphycus alvarezii) as an Antibacterial Agent Toward Pseudomonas aeruginosa and Enterococcus faecalis Bacteria Nabila Novitasari; Evy Yulianti; Ixora Sartika Mercuriani; Lili Sugiyarto; Nur Aeni Ariyanti
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.365-372

Abstract

Urinary tract infection (UTI) is a disease caused by both Gram-negative and Gram-positive bacteria. Red algae (Kappaphycus alvarezii) contain bioactive compounds derived from secondary metabolites with antibacterial properties. This study investigates the potential of Kappaphycus alvarezii methanol extract to inhibit the growth of Enterococcus faecalis ATCC 29212 and Pseudomonas aeruginosa ATCC 27853 using the microdilution broth method, determining Minimum Inhibitory Concentration (MIC) values ranging from a concentration of 500 µg/mL to 1.9531 µg/mL. To elucidate the inhibition mechanism, nucleic acid, protein, and Ca2+ ion leakage assay were performed via spectrophotometry at MIC 1, MIC 2, and MIC 3 concentrations. Morphological changes in the bacterial cell membrane were further examined using Scanning Electron Microscopy (SEM) at MIC 2. The results demonstrated that, the methanol extract of K. alvarezii exhibited significant antibacterial activity against Enterococcus faecalis bacteria with an MIC value of 1.9531 µg/mL, but showed no inhibitory effect on Pseudomonas aeruginosa. The extract inducted membrane leakage, as indicated by a higher leakage value compared to negative controls and commercial antibiotics. In addition, the methanol extract of K. alvarezii caused alterations in bacterial cells. These findings highlight the potential of Kappaphycus alvarezii methanol extract as a promising antibacterial agent.
Integration of STEM-Based E-Modules to Improve Conceptual Understanding and Digital Literacy in the Human Respiratory System Sri Minarti; Evy Yulianti; Intan Meifilindati
Global Education : International Journal of Educational Sciences and Languages Vol. 2 No. 4 (2025): November: Global Education : International Journal of Educational Sciences and
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70062/globaleducation.v2i4.288

Abstract

This research is motivated by challenges in biology learning, including the lack of digital literacy assessment in schools and the use of conventional learning methods that tend to make students bored. Impractical printed teaching materials cannot be integrated into the form of videos. This research aims to develop an e-module based on Science, Technology, Engineering, and Mathematics (STEM) to analyze the feasibility, practicality, and effectiveness of e-modules in improving students' understanding of concepts and digital literacy on human respiratory system materials. This research uses the Development Research (R&D) method with the ADDIE (Analysis, Design, Development, Implementation, Evaluation) development model.  The research was carried out at SMAN 1 Malinau. The implementation stage used a non-equivalent control group  design involving 34 students in the experimental class and the control class. Data collection instruments include validation sheets for media and material experts, practicality questionnaires for teachers and students, and pretest-posttest  tests to measure concept understanding and digital literacy.  Analysis of effectiveness data using N-gain test and hypothesis test (independent sample t-test for concept understanding and Mann-Whitney for digital literacy). The results of the research based on the validation of media experts and subject matter experts show that the STEM-based e-module is declared "Excellent". The e-module is also rated "Very Practical" by biology teachers and students. The e-module was shown to be effective in improving conceptual understanding, where the average N-gain value of the experimental class (58.63; Quite Effective category) was significantly higher (p=0.017) than that of the control class (40.62).
In Silico Approach of DNA Barcoding in Cattleya Orchid using nrDNA and matK Markers Risma Wiharyanti; Ixora Sartika Mercuriani; Evy Yulianti; Paramita Cahyaningrum Kuswandi
Al-Hayat: Journal of Biology and Applied Biology Vol. 8 No. 1 (2025)
Publisher : Fakultas Sains dan Teknologi, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/ah.v8i1.25671

Abstract

The Cattleya genus is one of the most commercially valuable orchids. Identifying these orchids based on morphological and phenotypic traits has been challenging. Accurate identification is crucial for distinguishing between native and hybrid species and determining the protected status of certain Cattleya orchids. This research explored potential markers using nrDNA and matK locus for DNA barcoding of the Cattleya genus through an in silico approach. All sequences were collected from the NCBI and analyzed using ClustalX2 for alignment, BioEdit for conversion, and MEGA11 for phylogenetic tree construction. The results revealed that nrDNA showed higher genetic variation compared to matK. However, neither phylogenetic tree could discriminate species precisely, as some Cattleya species were positioned closer to the outgroup. These findings can be used as a reference to support identification of Cattleya using molecular marker. Keywords: Cattleya, matK, molecular barcode, nrDNA
Development of E-LKPD Biotechnology Banana Yoghurt for Person and Product Creativity Students Phase E Bellamerna Nurandari; Evy Yulianti
Unnes Science Education Journal Vol. 14 No. 3 (2025): December 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/usej.v14i3.34158

Abstract

This study aims to determine the level of validity and practicality of E-LKPD; the effectiveness of E-LKPD; and the relationship between person and product dimensions of creativity in the experimental class. The research method used is RnD with a 4-D model. The research design used is a quasi-experimental design with a posttest-only design with nonequivalent groups. The study was conducted in one of the schools in Yogyakarta with a small-scale subject of 33 students and a large-scale of 71 students. Data collection techniques used interviews, observations, and questionnaires. The instruments used include questionnaires on learning experiences, materials, media, validation, practitioners, and students; questionnaires on person and product dimensions assessment; and learning implementation. The analysis techniques used are PERMANOVA, Independent Samples T-Test, Mann-Whitney U, and Spearman correlation. Based on the results of the research, the conclusion is E-LKPD has a high-very high level of validity according to experts and the level of practicality of students shows good results. The effectiveness of the product shows a PERMANOVA value of 0.0003 which indicates that there are simultaneous differences in both dimensions in the control and experimental classes; shows a difference in the person dimension with the Mann-Whitney U value and the product dimension of the practicum report with the Independent Samples T-Test value of 0.002; shows a significant relationship of 0.001 with a correlation coefficient of 0.515 which means a strong and positive relationship.
Co-Authors Absari Hanifah Ahmad Kamal Sudrajat Al Farisi, Fadli Robby Anna Rahmawati Anna Rakhmawati Arief Priyadi Asih, Ni Putu Sri Astuti Astuti Atik Kurniawati, Atik Bellamerna Nurandari Cornelia Budimarwanti Dea Merly Kirnasari Delvita Didik Nurhadiyanto Dinnisa Haura Zhafira Hidayat Drajat Pramiadi Dzikry Arrahim Eka Mustika Sari Eka Mustika Sari Eli Rohaeti Endah Nursanti, Tri Erna Setyaningrum Fadli Robby Al-Farisi Fajarotul Hidayah Fitria Maria Ulfha Hairiyah Heru Nurcahyo Hidayah, Fajarotul Hidayat, Dinnisa Haura Zhafira Himarosa, Rela Adi Hosniyah HR, Nida Husna Huang, Tzou-Chi Indyah Sulistyo Arty Intan Meifilindati Ixora Sartika Mercuriani Karim Theresih Kartika Ratna Pertiwi Lili Sugiyarto Melati Khairuddean Muhammad Iqbal Perdana Nabila Novitasari Nida Husna HR Nur Aeni Ariyanti Paramita Cahyaningrum Kuswandi Perta*, Hendro Pratiwi, Risha Amilia Ramadhan, Cahyo Setiadi Renny Septiana Risma Wiharyanti Salsabila, Hasna Sari*, Yenni Novita Siti Umniyati Siti Umniyatie Siti Umniyatie Sri Handayani Sri Minarti Suratsih Suratsih Tzou-Chi Huang Ukhti Jamil Rustiasari Veronica Deavina Wispar Sunu Bram Dwandaru