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Edi, Eduardus
Fakultas Pertanian, Universitas Timor
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences

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Bioethanol Synthesis from Areca Nut (Arecha catechu L.) Fiber Waste through Variations in Hydrochloric Acid Concentration and Hydrolysis Time: Sintesis Bioetanol dari Limbah Sabut Pinang (Arecha catechu L.) melalui Variasi Konsentrasi Asam Klorida Dan Waktu Hidrolisis Kolo, Sefrinus Maria Dolfi; Edi, Eduardus; Aki, Desidarius
JRST (Jurnal Riset Sains dan Teknologi) Volume 10 No. 1, March 2026: JRST
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrst.v10i1.26945

Abstract

Bioethanol is produced through the fermentation of glucose by microbes from biomass containing sugar, starch, cellulose, and lignocellulose. This study aims to determine the effect of varying concentrations of hydrochloric acid and hydrolysis time on the yield of reducing sugars and bioethanol concentration from areca nut husks. This study uses two independent variables, namely variations in acid concentration and hydrolysis time on the optimum acid concentration. The method used is the separate hydrolysis method and fermentation with variations in hydrochloric acid concentration of 1; 3; 5; and 7% and variations in hydrolysis time between 40; 50; 60; and 70 minutes at a temperature of 200°C. Fermentation was carried out with 10% inoculum using Saccharomyses cerevisiae yeast at room temperature for 4 days with a stirring speed of 200 rpm. Analysis of reducing sugars was carried out using a UV-Vis spectrophotometer, while ethanol content was analyzed using a GC-FID instrument. The results of the analysis showed that the optimum reducing sugar content was 65.25% obtained at a hydrochloric acid concentration of 3% and a hydrolysis time of 60 minutes. Ethanol analysis using GC-FID showed three peaks with an ethanol retention time of 3.263 minutes and an ethanol content of 22.29%.   ABSTRAK (Bahasa Indonesia) Bioetanol dihasilkan melalui fermentasi glukosa oleh mikroba dari biomassa yang mengandung gula, pati, selulosa, dan lignoselulosa. Penelitian ini bertujuan mengetahui pengaruh variasi konsentrasi asam klorida dan waktu hidrolisis terhadap perolehan gula pereduksi dan konsentrasi bioetanol dari sabut pinang. Penelitian ini menggunakan dua variabel independen, yaitu variasi konsentrasi asam dan waktu hidrolisis terhadap konsentrasi asam optimum. Metode yang digunakan adalah metode hidrolisis terpisah dan fermentasi dengan variasi konsentrasi asam klorida 1; 3; 5; dan 7% serta variasi waktu hidrolisis antara 40; 50; 60; dan 70 menit pada suhu 200 °C. Fermentasi dilakukan dengan inokulum 10% menggunakan khamir Saccharomyses cerevisiae pada suhu kamar selama 4 hari dengan kecepatan pengadukan 200 rpm. Analisis gula pereduksi dilakukan menggunakan spektrofotometer UV-Vis, sedangkan kadar etanol dianalisis menggunakan instrumen GC-FID. Hasil analisis menunjukkan kadar gula pereduksi optimum sebesar 65.25% yang diperoleh pada konsentrasi asam klorida 3% dan waktu hidrolisis 60 menit. Analisis etanol menggunakan GC-FID menunjukkan tiga puncak dengan waktu retensi etanol 3.263 menit dan perolehan kadar etanol sebesar 22.29%.  
New Innovation in Utilizing Natural Dyes Ecoprint Pounding In the Dahlia Farmers Group, TTU-NTT Regency: Inovasi Baru Pemanfaatan Pewarna Alami “Ecoprint Pounding” Di Kelompok Tani Dahlia Kabupaten TTU-NTT Noviana Mery Obenu; Maria Magdalena Kolo; Eduardus Edi; Yolanda Getrudis Naisumu
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 9 No. 1 (2025): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

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

Abstract

The process of making a piece of woven fabric using natural dyes takes a long time, starting from collecting the materials to dyeing the yarn. This causes the weaving activists in the Dahlia Farmers Group to only be able to weave one piece of cloth in ± 3-4 days or even 1 week. The Dahlia Farmers Group has used natural dyes for generations, but the use of natural dyes is only on woven yarn and has not known and tried to make ecoprint. This prompted the Service Team to provide skills in the form of socialization and ecoprint training as a new innovation in the use of natural dyes. In addition, this training is also to instill knowledge and stimulate ideas about environmentally sustainable entrepreneurial products, thereby increasing income, and introducing additional products outside of traditional weaving. The approach adopted in this training, in addition to socialization explaining the principles of ecoprint, also focuses specifically on pounding techniques. Based on the results of the activity, it appears that the partners are enthusiastic and have a great interest in the training and the products produced, in the form of plant-patterned fabrics and bags with a variety of colors.
Co-Authors Agus Wahyudi Aki, Desidarius Beatrik Hoar Benu, Didi Prasetyo Bria, Emilia Juliyanti Christanti, Cindy Claudia Endah Mutiara Marhaeni Putri Gelyaman, Gebhardus Djugian Jefry Presson Kolo, Maria Magdalena Korbafo, Elisabeth Kutiom, Richardus Lite, Asriyana Maria Aprista Manikin Maria Kasilda Elu Maria M Kolo Matius Stefanus Batu Mere, Janrigo Klaumegio N. M. Obenu Nomi, Anastasia Grandivoriana Noviana M Oebenu Noviana Mery Obenu Novriana Bete Obenu, Noviana Mery Oktovianus Kasa Patrisius M. Bria R.Y. Perry Burhan, R.Y. Perry Regina Seran Regina Seran Risna Erni Yati Adu Sefrinus Maria Dolfi Kolo Siki, Kresensia Talan, Veronika Sofia Jaquelin Tefa, Maria Selestina Yohana Ivana Kedang Yolanda Getrudis Naisumu Zetra, Yulfi Zjahra Vianita