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All Journal JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI
I.A. Somya Iswari P
Universitas Udayana
Agriculture, Biological Sciences & Forestry Chemistry Immunology & microbiology Industrial & Manufacturing Engineering

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Penentuan Lama Fermentasi Dan Ph Awal Media Dalam Produksi Etanol Oleh Isolat Bm1-Cp14 I.A. Somya Iswari P; I. M. Mahaputra Wijaya; Ni Putu Suwariani
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 10 No 4 (2022): December
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JRMA.2022.v10.i04.p12

Abstract

This study aims to determine the optimum duration of fermentation and the best initial pH of the growth medium BM1-CP14 isolates to produce ethanol. In this study, five treatments of fermentation time (2, 4, 6, 8 and 10 days) combined with three initial pH treatments of the fermentation medium (4, 5, and 6) were conducted. This research was carried out in several steps, namely cell rejuvenation, propagation of BM1-CP14 isolates, fermentation, distillation, and calculation of total ethanol. The best fermentation duration was found to be ten days with a difference of total dissolved solid 1.07 (∆%brix) yielded total ethanol of 5.08 mL. In the initial pH treatment, the media produced total ethanol at pH 4 of 5.15 mL, pH 5 of 5.17 mL and pH 6 of 5.16 mL. The pH treatment of BM1-CP14 bacteria was found to have no effect due to the total ethanol produced was almost similar
Co-Authors I. M. Mahaputra Wijaya Ni Putu Suwariani