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All Journal Indonesian Journal of Pharmaceutical Science and Technology Elkawnie Syntax Literate: Jurnal Ilmiah Indonesia JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Consulenza : Jurnal Bimbingan Konseling dan Psikologi International Review of Practical Innovation, Technology and Green Energy (IRPITAGE) Journal of Pharmaceutical Science and Clinical Pharmacy (PSCP) Kimia Padjadjaran
Irma Rahmawati
Akademi Farmasi Bumi Siliwangi Bandung Jawa Barat, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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Analisis Kafein pada Kopi Arabika (Coffea arabica L.) Gununghalu Teknik Light Roasting, Medium Roasting, dan Dark Roasting Rahmawati, Irma; Gustiani, Laili T.
Kimia Padjadjaran Vol 1, No 2 (2023)
Publisher : Kimia Padjadjaran

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Abstract

Kopi merupakan salah satu minuman yang paling banyak didistribusikan dan paling banyak diminum di dunia. Kopi arabika menguasai sekitar 70% pasar kopi dunia. Kopi dikenal sebagai minuman dengan kandungan kafein yang berkadar tinggi. Penelitian ini bertujuan untuk mengetahui perbandingan kadar kafein pada kopi arabika (Coffea arabica L.) Gununghalu dengan variasi temperatur roasting, yaitu light roasting (191o C), medium roasting (211o C), dan dark roasting (221o C). Identifikasi kafein dilakukan dengan menggunakan uji Dragendorff dan uji Parry. Penetapan kadar kafein ditentukan dengan metode spektrofotometri UV-Vis dan analisis statistika ditentukan dengan Oneway-ANOVA. Hasil analisis kualitatif terhadap ke tiga sampel menunjukan hasil positif mengandung kafein. Kadar kafein pada sampel light roasting sebesar 4,7 mg/g, sampel medium roasting sebesar 3,81 mg/g dan sampel dark roasting sebesar 3,05 mg/g. Hasil analisis statistika menunjukan kadar kafein pada sampel berbeda secara signifikan dengan nilai p<0,05. Hasil penelitian menunjukkan semakin naik temperature roasting maka kadar kafein pada kopi arabika (Coffea arabica L.) semakin turun. Kadar kafein pada sampel kopi arabika Gununghalu tidak melebihi batas maksimum SNI, yaitu 50 mg/sajian dan 150 mg/hari.
APPLICATION-BASED ENGLISH PRONUNCIATION TRAINING FOR YOUTH IN THE DEMOCARE COMMUNITY IN NORTH MERUYA Irma Rahmawati; Wahyu Budi; Lutfi Alhazami; Ratu Amanah Amaranth Azalea; Gabriella Angelica
International Review of Practical Innovation, Technology and Green Energy (IRPITAGE) Vol. 5 No. 2 (2025): July-October 2025
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/irpitage.v5i2.3859

Abstract

This community service program aims to improve English pronunciation skills among teenagers in the North Meruya Youth Community in West Jakarta. The implementation method included training based on artificial intelligence (AI) applications such as Elsa Speak, which provides automatic feedback to improve articulation, intonation, and word emphasis. The activity was accompanied by mentoring through online groups and pre- and post-test evaluations using a scoring rubric on a scale of 1-5. Results showed that more than 90% of participants experienced a pronunciation score increase of at least 30%, with participant satisfaction levels reaching over 80%. The training successfully established independent study groups and increased participant confidence. These findings demonstrate the effectiveness of using AI technology in community-based English learning, with potential for replication in other regions.
Co-Authors Andi Ika Julianti Annisa Pitaloka Asrori, Shofian Habib Cahyani, Ninda Ayu Putri Gabriella Angelica Gustiani, Laili T. Hayat Sholihin Helmalia, Eulis Julyane, Julyane Kaswati, Lilih Lutfi Alhazami Moesarofah, Moesarofah Muhammad Muhammad Mulyati Arifin Nikmah, Lailatul Nuraini, Sabrina Icha Ratu Amanah Amaranth Azalea Rizquna4, Melina Elfani Sinta Dewi Anggraeni Wahyu Budi Yenni Puspita Tanjung