Effect of Severity Factor on the Subcritical Water and Enzymatic Hydrolysis of Coconut Husk for Reducing Sugar Production

Maktum Muharja orcid scopus  -  Department of Chemical Engineering, Faculty of Engineering, Universitas Jember, Indonesia
Nur Fadhilah  -  Department of Engineering Physics, Institut Teknologi Sepuluh Nopember, Indonesia
Rizki Fitria Darmayanti orcid  -  Department of Chemical Engineering, Faculty of Engineering, Universitas Jember, Indonesia
Hanny Frans Sangian orcid  -  Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sam Ratulangi, Indonesia
Tantular Nurtono  -  Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Indonesia
*Arief Widjaja scopus  -  Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Indonesia
Received: 4 Sep 2020; Revised: 17 Oct 2020; Accepted: 17 Oct 2020; Published: 28 Dec 2020; Available online: 28 Oct 2020.
Open Access Copyright (c) 2020 Bulletin of Chemical Reaction Engineering & Catalysis
License URL: http://creativecommons.org/licenses/by-sa/4.0

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Preventing the further degradation of monomeric or oligomeric sugar into by-product during biomass conversion is one of the challenges for fermentable sugar production. In this study, the performance of subcritical water (SCW) and enzymatic hydrolysis of coconut husk toward reducing sugar production was investigated using a severity factor (SF) approach. Furthermore, the optimal condition of SCW was optimized using response surface methodology (RSM), where the composition changes of lignocellulose and sugar yield as responses. From the results, at low SF of SCW, sugar yield escalated as increasing SF value. In the enzymatic hydrolysis process, the effect of SCW pressure is a significant factor enhancing sugar yield. A maximum total sugar yield was attained on the mild SF condition of 2.86. From this work, it was known that the SF approach is sufficient parameter to evaluate the SCW and enzymatic hydrolysis of coconut husk. Copyright © 2020 BCREC Group. All rights reserved


Keywords: coconut husk; enzymatic hydrolysis; reducing sugar; severity; subcritical water
Funding: Ministry of Research Technology and Higher Education, Republic of Indonesia

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