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All Journal GEN BIONIX: Jurnal Ilmiah Pendidikan Biologi
Lestariani Zebua
Department of Biology Education, Universitas Nias, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Education Environmental Science Other

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Anatomical-Morphological Structure and Environmental Factor Engineering in Sustainable Cultivation of Mustard Greens (Brassica juncea L.) Nurin Aprillinia Zalukhu; Pitra Yani Zai; Seniman Putri Sari Zega; Lestariani Zebua; Christi Elissabeth Zendrato; Fitriyani Zalukhu; Toroziduhu Waruwu
GEN BIONIX: Jurnal Ilmiah Pendidikan Biologi Vol 4 No 1 (2026): GEN BIONIX: Jurnal Ilmiah Pendidikan Biologi
Publisher : Program Studi Pendidikan Biologi - Universitas Nias

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56207/genbionix.v4i1.943

Abstract

This study objectives to theoretically analyze the morpho-physiological responses of mustard greens (Brassica juncea L.) to micro-environmental engineering and to formulate an efficient agronomic strategy based on a compilation of prior research data. The method used was a literature review by synthesizing secondary data from various scientific journals related to edaphic porosity manipulation and organic Nitrogen nutrient optimization. The results of the review show that edaphic engineering using porous materials such as husk biochar is consistently proven to enhance oxygen circulation in the rhizosphere, which increases the efficiency of active transport nitrate ion absorption. Optimal Nitrogen accumulation accelerates cell division in leaf mesophyll and increases chlorophyll concentration, thereby boosting carbon assimilation rates during the rapid vegetative phase (30–40 days). The implication of this study is the availability of a sustainable conceptual model for leafy vegetable horticulture cultivation using local organic materials. Based on the literature synthesis, stable micro-environmental manipulation is proven crucial to maintaining high turgor in amfistomatic guard cells, producing wide, fresh, and crispy leaves.
Literature Study on Food Preservation Methods and Their Effects on Product Quality and Shelf Life Novelina Andriani Zega; Mashati Bate'e; Marina Gea; Dewi Sandra Zamili; Irene Infak Halawa; Lestariani Zebua; Seniman Putri Sari Zega
GEN BIONIX: Jurnal Ilmiah Pendidikan Biologi Vol 4 No 2 (2026): GEN BIONIX: Jurnal Ilmiah Pendidikan Biologi
Publisher : Program Studi Pendidikan Biologi - Universitas Nias

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56207/genbionix.v4i2.962

Abstract

Food preservation is an essential technology in the food industry aimed at maintaining product quality, ensuring food safety, and extending shelf life. Various preservation methods have been developed, ranging from conventional techniques such as refrigeration, freezing, drying, and fermentation to modern technologies including vacuum packaging, Modified Atmosphere Packaging (MAP), edible coatings, and non-thermal processing. This article aims to review different food preservation methods and analyze their effects on food quality and shelf life based on published scientific studies. The research employed a literature review method by collecting and analyzing relevant national and international journal articles on food preservation technologies. The findings indicate that each preservation method operates through different mechanisms to inhibit microbial growth, enzymatic activity, and chemical reactions responsible for food deterioration. Refrigeration and freezing effectively slow biological spoilage, while drying reduces moisture content and limits microbial growth. Fermentation enhances product stability and may improve functional properties. Furthermore, modern preservation technologies, such as MAP, edible coatings, and non-thermal methods, have demonstrated greater effectiveness in maintaining nutritional value, color, texture, and sensory characteristics of food products. Combining multiple preservation techniques often provides superior results in extending shelf life without significantly compromising product quality. Therefore, selecting appropriate preservation methods is crucial for maintaining food quality, ensuring safety, and minimizing postharvest losses during storage and distribution.
Analysis of Teacher Professionalism and Competence in Educational Management at SMP Negeri 2 Gunungsitoli Utara Pitra Yani Zai; Meno Niat Sari Harefa; Lestariani Zebua; Weni Yulita Laoli; Anotona Gulo; Fanes Juang Aldi Zai; Natalia Kristiani Lase
GEN BIONIX: Jurnal Ilmiah Pendidikan Biologi Vol 4 No 2 (2026): GEN BIONIX: Jurnal Ilmiah Pendidikan Biologi
Publisher : Program Studi Pendidikan Biologi - Universitas Nias

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56207/genbionix.v4i2.968

Abstract

Teacher professionalism and competence are crucial elements in ensuring the effectiveness of educational management and improving the quality of education. Teachers are expected to possess professional attitudes and competencies that support effective teaching and learning processes. This study aimed to analyze teacher professionalism and competence within the perspective of educational management at SMP Negeri 2 Gunungsitoli Utara. A qualitative descriptive method was employed to obtain an in-depth understanding of the phenomenon under investigation. Data were collected through interviews, observations, and documentation, with the school principal serving as the primary informant. The collected data were analyzed using the Miles and Huberman model, which includes data reduction, data display, and conclusion drawing. The findings indicate that teacher professionalism is reflected in responsibility, discipline, commitment to teaching duties, active participation in school programs, and efforts to improve instructional quality. Teachers generally demonstrate adequate pedagogical, professional, social, and personal competencies, although differences in competency levels among individuals remain evident. Educational management plays an important role in supporting teacher development through supervision, training programs, professional development activities, performance evaluation, and the provision of a conducive working environment. Furthermore, the principal contributes significantly to fostering teacher professionalism and competence through guidance, monitoring, and continuous support. The study concludes that effective educational management contributes substantially to strengthening teacher professionalism and competence, thereby enhancing the overall quality of education at SMP Negeri 2 Gunungsitoli Utara.
Co-Authors Anotona Gulo Christi Elissabeth Zendrato Dewi Sandra Zamili Fanes Juang Aldi Zai Fitriyani Zalukhu Irene Infak Halawa Marina Gea Mashati Bate'e Meno Niat Sari Harefa Natalia Kristiani Lase Novelina Andriani Zega Nurin Aprillinia Zalukhu Pitra Yani Zai Seniman Putri Sari Zega Toroziduhu Waruwu Weni Yulita Laoli