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All Journal Prosiding Seminar Nasional Pakar Jurnal Pendidikan Bahasa dan Anak Usia Dini
Sari Rahmi
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UJI SENYAWA ANTIMIKROBA DARI ASAM LEMAK DAN FATTY ACID METHYL ESTER (FAME) MIKROALGA Nannochloropsis oculata Zulkarnain Chaidir; Sari Rahmi; Marniati Salim
Prosiding Seminar Nasional Pakar Prosiding Seminar Nasional Pakar 2019 Buku I
Publisher : Lembaga Penelitian Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pakar.v0i0.4144

Abstract

Microalgae contains many bioactive molecules including lipid that can be useful for development of antimicrobial compounds. The aim of this research is to test antimicrobial compounds from fatty acid and fatty acid methyl ester (FAME)from microalgae Nannochloropsis oculata. Lipid from microalgae was extracted using hexane and transesterfied using methanol dan sulfuric acid p.a as catalist. Antimicrobial activities were tested using disc diffusion methode against Staphylococcus aureus, Escherichia coli, and yeast Candida albicans, at varying concentrations are 100, 200, and 300 mg/L. The result shown that fatty acids and FAME from microalgae Nannochloropsis oculata have antibacterial activity and do not have anti-candidal activity against Candida albicans. Antibacterial activity of fatty acids is higher than antibacterial activity of FAME on both bacteria. The result shown that fatty acids and FAME contained in lipid of microalgae Nannochloropsis oculata are palmitic acid, stearic acid, methyl lauric, and methyl stearic.
Pemanfaatan Permainan Edukatif Digital untuk Meningkatkan Kemampuan Fonologis Anak Usia Dini Santi Dwi Kartika; Sari Rahmi; Niko Ari Wibowo
Jurnal Pendidikan Bahasa dan Anak Usia Dini Vol. 1 No. 2 (2025): Maret : Jurnal Pendidikan Bahasa dan Anak Usia Dini
Publisher : Asosiasi Periset Bahasa Sastra Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenbaud.v1i2.48

Abstract

Phonological skills are a crucial foundation in early childhood language and literacy development. This study aims to explore the use of digital educational games as an interactive learning medium to improve young children's phonological abilities. A quasi-experimental method with a one-group pre-test and post-test design was applied. The participants were 4–5-year-old children enrolled in an early childhood education center in City X. Data were collected through observation sheets and phonological tests. The findings revealed a significant improvement in children's phonological skills after engaging with digital educational games regularly over a four-week period. The games were designed to train skills in sound discrimination, rhyme recognition, and syllable identification. These results imply that digital technology can serve as an innovative and effective tool to support phonological learning in an enjoyable manner during early childhood. The findings provide valuable insights for educators and application developers to design learning media appropriate to children's developmental stages.
Co-Authors Marniati Salim Niko Ari Wibowo Santi Dwi Kartika Zulkarnain Chaidir