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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Eksakta : Berkala Ilmiah Bidang MIPA AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT VISA: Journal of Vision and Ideas Journal of Innovative and Creativity
Larasati Arum Utami
Universitas Negeri Medan
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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The Effect of Ethanol Solvent Concentration on Antimicrobial Activities The Extract of Andalas Endophytic Bacteria (Morus Macroura Miq.) Fermentation Product Larasati Arum Utami; Dwi Hilda Putri
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 21 No. 1 (2020): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (732.062 KB) | DOI: 10.24036/eksakta/vol21-iss1/210

Abstract

Anti-Biotic resistance is a health problem globally. It is able to overcome with a new anti-microbial compound that can be produced from Andalas endophytic bacteria. This compound can be obtained through the fermentation process. In order to separate this active-compound, it is needed to use the extraction method. In this method, the solvent is functioned as the extractor. One of the solvent which is commonly used is ethanol. This research is aimed to know the effect of ethanol concentration toward antibacterial activity from extracted bacterial fermentation products of Andalas endophytic bacteria isolate JDT 1B. The fermented products are extracted by using the maceration method. The concentrations are 100%, 80%, 70%. A test of anti-microbial activity is used disk diffusion method. The extracted concentrations tested for each solvent are 50%, 25%, 12,5%, and 6.25%. Anti-bacterial activity is analyzed by using factorial design. The factorial result showed there is no significant contrast between ethanol concentration mentioned toward anti-bacterial activity from extracted bacterial fermentation products of Andalas endophytic bacteria Isolate JDT 1B. The concentration of extracted fermentation product using 70% ethanol has the same inhibition zone as control is 6,25%.
PEMBELAJARAN INTERDISIPLINER: EDUKASI HOLISTIK UNTUK MENINGKATKAN LITERASI SAINS DAN LITERASI BACA ANAK SD DI DESA BINJAI Fairuz, Tariza; Utami, Larasati Arum; Marisa, Vera
Amaliah: Jurnal Pengabdian Kepada Masyarakat Vol 9 No 1 (2025): Amaliah Jurnal: Pengabdian kepada Masyarakat
Publisher : LPPI UMN AL WASHLIYAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/ajpkm.v9i1.4271

Abstract

Science literacy and reading literacy are two key competencies that not only support academic success but also prepare children to face global challenges in the 21st century. Science literacy includes the ability to understand scientific concepts, think critically, and apply that knowledge in everyday life. Meanwhile, reading literacy involves the ability to understand, analyze, and use information from written texts. Science literacy and reading literacy of elementary school children in Binjai Village are still low and need holistic education with interdisciplinary learning programs. This community service program aims to improve science literacy and reading literacy of elementary school children in Binjai Village through interdisciplinary learning. The implementation method in this community service activity is in accordance with the partner's problem, through training in interdisciplinary learning that includes aspects of science literacy and reading literacy in English and Arabic adapted from quantitative research methods with a one-class pretest-posttest design. This service was carried out in Binjai Village, Tebing Syahbandar District, Serdang Bedagai Regency. There were 30 elementary school children who participated in this activity. The results of this activity show an increase in science literacy and reading literacy of elementary school children in Binjai village.
Identification of Microbial Contamination in Street Food Around Universitas Negeri Medan Larasati Arum Utami; Idramsa Idramsa; Artika Rindiani; Najwa Liliana; Nita Maya Sari Pane; Santaro Marito Nadeak
Journal of Innovative and Creativity Vol. 5 No. 2 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i2.2647

Abstract

Street food remains a popular choice for students due to its affordability and convenience. Its rapid preparation and service contribute to its ongoing popularity. The university, including Universitas Negeri Medan, is often surrounded by numerous street vendors offering a diverse range of foods, predominantly made from meat and flour. However, the open exposure of these foods and insufficient sanitation practices pose a heightened risk of contamination by harmful microorganisms. This study examines bacterial contamination in processed meat-based street foods sold near Universitas Negeri Medan, with a focus on items such as meatballs, grilled meatballs, and batagor. Microbiological examination involved isolating bacteria using selective and differential culture media, particularly Eosin Methylene Blue Agar (EMBA). Subsequent identification was carried out using Gram staining to determine cell morphology and SIM (Sulfide Indole Motility) medium for motility assessment in the microbiology lab at Universitas Negeri Medan. Findings revealed contamination predominantly in grilled meatballs, with bacteria belonging to the Enterobacteriaceae family detected. These isolates were characterized as Gram-negative, rod-shaped, and motile microorganisms. The presence of such bacteria raises serious concerns about food safety. It emphasizes the need for improved hygienic practices and rigorous food safety control measures in street food vending areas around the university. Implementing these measures is essential to safeguard student health and maintain the standard of street food quality on campus.
Potential Microplastic-Degrading Bacteria from Mangrove Sediment in The Paluh Getah Area, Percut Sei Tuan District Ahmad Shafwan S. Pulungan; Larasati Arum Utami; Marlinda Nilan Sari Rangkuti; Ayu Putri Ningsih; Cindy Suci Muliandhira
Jurnal Penelitian Pendidikan IPA Vol 11 No 10 (2025): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i10.12647

Abstract

Microplastic pollution poses a severe threat to marine ecosystems due to its persistence and toxicity, necessitating innovative biodegradation strategies. This study explored the potential of bacteria isolated from mangrove sediments of the Paluh Getah mangrove forest, North Sumatra, to degrade common microplastics, including LDPE, HDPE, PET, PP, and PS. Ten bacterial isolates were obtained and screened for their ability to grow on microplastic-supplemented mineral salt medium over 20 days. Three isolates (BPM 5, BPM 9, and BPM 10) demonstrated robust growth, with biochemical tests confirming catalase activity critical for managing oxidative stress during plastic degradation. Molecular identification via 16S rRNA gene sequencing revealed the isolates as Enterobacter sp. and Brevibacillus parabrevis, both known for their biodegradation capacities. The findings underscore the diverse metabolic pathways these bacteria employ to utilize microplastics as carbon sources. This research highlights the promise of mangrove sediment bacteria as eco-friendly bioremediation agents to mitigate microplastic pollution in coastal environments. Further studies are required to optimize degradation conditions and elucidate enzymatic mechanisms to enhance practical applications.
Peran Posyandu dalam Meningkatkan Kesehatan Balita di Lingkungan VI Pajak Rambai Utami, Larasati Arum; Fairuz, Tariza; Napitupulu, Stefany Hotnida; Manihuruk, Keyla Dahlia; Nainggolan, Malikah Sofia Rahman
VISA: Journal of Vision and Ideas Vol. 6 No. 1 (2026): Journal of Vision and Ideas (VISA)
Publisher : IAI Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Posyandu (Integrated Service Post) is a form of Community-Based Health Effort (UKBM) that plays a vital role in improving the health of children and mothers. In Neighborhood VI Pajak Rambai, Posyandu functions as a center for monitoring toddlers' growth and development, providing immunizations, nutrition counseling, and supplementary feeding (PMT). This study uses a qualitative approach with data collection methods including direct observation, semi-structured interviews with cadres and parents of toddlers, as well as documentation of attendance records and child growth charts. Data analysis was conducted thematically and descriptively, with triangulation to ensure the validity and reliability of the results. The findings indicate that Posyandu regularly provides weighing and height measurement services, immunizations, nutrition counseling, PMT, and education on healthy parenting and child hygiene to parents. Active parental participation is a key factor supporting the success of the program. Routine monitoring shows significant improvements in toddlers' weight and height over time. Additionally, Posyandu serves as a health information center that increases parental awareness of maintaining family health. Overall, Posyandu in Neighborhood VI Pajak Rambai has a strategic role in supporting the healthy growth and development of toddlers through integrated health services and community education.
Co-Authors Artika Rindiani Ayu Putri Ningsih Cindy Suci Muliandhira Dwi Hilda Putri Fairuz, Tariza Idramsa Idramsa Manihuruk, Keyla Dahlia Marisa, Vera Marlinda Nilan Sari Rangkuti Nainggolan, Malikah Sofia Rahman Najwa Liliana Napitupulu, Stefany Hotnida Nita Maya Sari Pane Pulungan, Ahmad Shafwan S Santaro Marito Nadeak