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All Journal Chemistry Indonesian Journal of Chemical Research Reswara: Jurnal Pengabdian Kepada Masyarakat Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Indonesian Journal of Chemical Science and Technology CHEDS: Journal of Chemistry, Education, and Science PERTANIAN TROPIK Impression : Jurnal Teknologi dan Informasi
Yusfiani, Marnida
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ANALISIS KEBUTUHAN PENGEMBANGAN MEDIA STORYBOARD DALAM PEMBELAJARAN KIMIA Sudrajat, Ajat; Jasmidi, Jasmidi; Siregar, Muhammad Isa; Yusfiani, Marnida; Daulay, Rabiah Afifah; Sinaga, Anggian Nurjelita; Elfany, Yuna; Sari, Mayang; Rachmi, Naila Syabina; Ritonga, Dina Arfah
CHEDS: Journal of Chemistry, Education, and Science Vol 8, No 1 (2024)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v8i1.9308

Abstract

Kajian analisis kebutuhan storyboard sebagai media pembelajaran kimia pada materi koloid dijelaskan dalam penelitian ini. Penelitian ini merupakan penelitian pleno pengembangan storyboard sebagai media pembelajaran kimia pada materi koloid.  Sampel penelitian adalah mahasiswa yang mengambil Kimia Umum.  Sampel penelitian 38 siswa untuk informan dan responden. Analisis deskriptif merupakan metode yang digunakan dalam penelitian ini, instrumen yang diambil melalui wawancara dan kuisioner. Hasil penelitian menunjukkan bahwa media pembelajaran yang digunakan pada kelas instusional sudah umum, dengan menggunakan multimedia interaktif storyboard sebagai solusinya. Siswa menyatakan bahwa Koloid bersifat abstrak pada beberapa bagiannya. Diperlukan pengembangan storyboard sebagai media pembelajaran koloid
Simultaneous Saccharification and Fermentation of Sugarcane Bagasse by Saccharomyces Cerevisiae and Zymomonas Mobilis Ginting, Elfrida; Siregar, Ecclesia; Dewi, Ratna Sari; Simatupang, Lisnawaty; Yusfiani, Marnida; Sembiring, Jhony Hartanta
Indonesian Journal of Chemical Research Vol 13 No 3 (2026): Edition for January 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.13-elf

Abstract

Sugarcane bagasse represents a promising lignocellulosic feedstock for second-generation bioethanol production. This study evaluated the performance of immobilized Simultaneous Saccharification and Fermentation (SSF) systems using Saccharomyces cerevisiae and Zymomonas mobilis for ethanol production from alkali-pretreated sugarcane bagasse. Delignification using 10% NaOH enhanced cellulose accessibility for enzymatic hydrolysis by immobilized Aspergillus niger. SSF was conducted under anaerobic conditions at 30°C for 80 h. Reducing sugar dynamics, physicochemical properties, FTIR spectra, and GC analysis were used to evaluate ethanol formation and quality. The SSF system employing S. cerevisiae produced a higher ethanol concentration (2.83% v/v) and purity (99.77%) compared to Z. mobilis (2.20% v/v; 89.92%). Although higher residual reducing sugars were observed in the Z. mobilis system, ethanol conversion efficiency remained lower, indicating metabolic limitations under SSF conditions. FTIR and GC analyses confirmed ethanol formation with high water content in both distillates. These results demonstrate that microbial robustness plays a critical role in immobilized SSF performance, with S. cerevisiae exhibiting superior fermentative stability and ethanol yield compared to Z. mobilis.
Co-Authors Abd Hakim, Abd Ajat Sudrajat Arayan, Miftah Ayi Darmana, Ayi Ayu Diana Azzahra, Nabila Elfany, Yuna Ginting, Elfrida Jasmidi Jasmidi Jhony Hartanta Sembiring Juwitaningsih, Tita Khoiriah Lubis, Ahyani Ridhayani LUBIS, NOVITA SARI Mayang Sari Muchsin Harahap Muhammad Nizam Muhammad Zakiyul Fikri Nasution, Haqqi Annazili Ningsih, Liska Kustria Parinduri, Armansyah Purba, Nesya Maharani Rabiah Afifah Daulay Rachmi, Naila Syabina Rafiqoh, Sri Ratna Sari Dewi Ridhayani, Ahyani Ritonga, Dina Arfah Saragih, Jasman Wanfaber Parningotan Sembiring, Rahel Natalia Simatupang, Lisnawaty Sinaga, Anggian Nurjelita Siregar, Ecclesia Siregar, Muhammad Isa Syakura, Abd. Widya, Risa Dwy Zubir, Moondra