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All Journal Jurnal Teknik Kimia USU Jurnal Teknik Kimia Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Pure and Applied Chemistry Industri Inovatif : Jurnal Teknik Industri G-Tech : Jurnal Teknologi Terapan Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) JURNAL FLYWHEEL Journal of Sustainable Technology and Applied Science Prosiding SNAST Jurnal Teknik Kimia USU Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat JASTEN (Jurnal Aplikasi Sains Teknologi Nasional Jurnal ATMOSPHERE
Dwi Ana Anggorowati
Institut Teknologi Nasional Malang
Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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PENGARUH KONSENTRASI KATALIS DAN KECEPATAN PENGADUKAN PADA SINTESIS BIODIESEL MINYAK KELAPA SAWIT DENGAN KO-PELARUT METIL ESTER Daryono, Elvianto Dwi; Dewi, Rini Kartika; Anggorowati, Dwi Ana
Indonesian Journal of Pure and Applied Chemistry Vol 9, No 1 (2026)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v9i1.100312

Abstract

The transesterification process is hindered by the many processing steps required, and the results are often suboptimal. The interesterification process using a methyl ester co-solvent offers a solution to this issue. The methyl ester co-solvent accelerates the reaction and eliminates the need for a separation stage at the end of the process. This study aims to determine the effects of catalyst concentration and stirring speed on methyl ester yield in the interesterification of palm oil to biodiesel using a methyl ester co-solvent. A total of 250 g of oil was used, with an oil-to-methyl acetate molar ratio of 1:6. The reaction was carried out at 60 °C, using 15% co-solvent, a reaction time of 1 hour, KOH catalyst concentrations ranging from 0.25% to 1%, and stirring speeds between 600 and 1,000 rpm. The oil, methyl acetate, and catalyst were placed into a three-neck flask, and the reaction was conducted according to the specified operating conditions. Optimum conditions for palm oil interesterification were achieved with a KOH catalyst concentration of 0.5% and a stirring speed of 800 rpm, resulting in a crude yield of 93.1%, a methyl ester concentration of 43,654 mg/L, and an acid value of 0.42 mg KOH/g, meeting the requirements of SNI 7182:2015.
Characterization of Cassava Starch–Based Edible Film (Manihot esculenta) and Seaweed Na-Alginate with Variations in Drying Time Firdauza, Trustha Aurora; Putri, Widia Kristiana; Setyawati, Harimbi; Anggorowati, Dwi Ana
G-Tech: Jurnal Teknologi Terapan Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i1.8959

Abstract

Edible films are biodegradable and consumable packaging materials that protect food products from environmental influences. This study aimed to produce and characterize cassava starch–based edible films with sodium alginate from seaweed, glycerol as a plasticizer, and garlic extract as an antibacterial agent using the solvent casting method. The research variables included cassava starch mass (4, 5, and 6 g) and drying time (4, 9, 14, 19, and 24 hours). Film thickness, tensile strength, elongation, moisture content, solubility, and microbiological properties were analyzed. Results showed that starch mass and drying time significantly affected the physical and mechanical properties of the films. The optimum drying time was 14 hours, at which all samples met the Indonesian National Standard (SNI) for moisture content (10–<16%). The best performance was obtained with 6 g starch, producing films with a tensile strength of 5.034 MPa, elongation of 13.48%, and low microbial counts (4–9 cells/100 mL) with negative Escherichia coli, complying with SNI 2897:2008. The addition of garlic extract contributed to the films’ antimicrobial properties. Overall, the formulation demonstrates a balanced combination of mechanical, physical, and microbiological characteristics, providing a practical foundation for developing biodegradable cassava starch–based edible films for food packaging applications.
Co-Authors Adam Y. Adhisty E. Angreani, Firda Nur Anis Artiyani Anitarakhmi Handaratri AR, Nanik Ashari, Mohammad Ibrahim Ayudya Mahendaringratry Betaria Kusuma Dewi Betarina N. F. Budiharso, Hery Setyo Claudya D. S. D.U., Soofiyah Dayal Gustopo Dewi R. Dewi, Beteria Kusuma Dimas Indra Laksmana Dinnastyar, Faishal Ahmad Dio Ajeng O. Elvianto Dwi Daryono Erni Junita Sinaga Faidliyah Nilna Minah Faishal A.D. Fajriyatul , Fresti Firdauza, Trustha Aurora Firyaal Putri Verdina Frisca Fitrianingrum Gita Priandini Gultom, Paniel Harimbi Setyawati HIMAYA, MEISUN Ido K. Indriani, Sri Iswono, Veronica Putri Julianus Hutabarat K.P, Zhendika M. Jamilulchal Maranatha W Marcelino Mardhiyah A.S Marsen, Vinsen Alexander Mohammad Istnaeny Hudha Muhammad Fatkhurozi Mujiono Mujiono Mujiono Mujiono Muyassaroh Nanik AR Nanik Astuti Rahman Natarisa P. I. S. Nur Efendi Nur H. A. Oktavian, Dio Ajeng Priandini, Gita Priscilla Tamara Purwati Purwati Putri, Widia Kristiana Rahmawati, Jenny Retnowati, Dewi Rini Kartika Dewi Rizky N.N. S., Dian Kurnia S., Mona Riso Sanny Andjar Sari Sany Andjar Sari, Sanny Andjar Sri Indriani Sulis Dwi P Thufail Thufail Thufail, Thufail Valerie Alpenada Valerie Veronica P. I Viktor Vina Nur Laily Vinsen A. M. W, Maranatha Wayan Sujana Widhiyanto Yoga Putra Alviansyah Yunita , Erni