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Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production

The effects of alkaline pretreatment with NaOH, KOH, Ca(OH)2, and NaOCl at varying temperatures and concentrations on the production of sugars, changes in the morphological structure, and the chemical composition of rice straw were evaluated. Enzymatic saccharification of 2% (w/v) KOH-treated rice s...

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Main Authors: Mohamad Remli, Nurul Atika, Md. Shah, Umi Kalsom, Mohamad, Rosfarizan, Abd. Aziz, Suraini
Formato: Artigo
Idioma:English
Publicado: North Carolina State University 2014
Acceso en liña:http://psasir.upm.edu.my/id/eprint/37341/1/Effects%20of%20chemical%20and%20thermal%20pretreatments%20on%20the%20enzymatic%20saccharification%20of%20rice%20straw%20for%20sugars%20production.pdf
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spelling oai:psasir.upm.edu.my:37341 http://psasir.upm.edu.my/id/eprint/37341/ Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production Mohamad Remli, Nurul Atika Md. Shah, Umi Kalsom Mohamad, Rosfarizan Abd. Aziz, Suraini The effects of alkaline pretreatment with NaOH, KOH, Ca(OH)2, and NaOCl at varying temperatures and concentrations on the production of sugars, changes in the morphological structure, and the chemical composition of rice straw were evaluated. Enzymatic saccharification of 2% (w/v) KOH-treated rice straw with autoclaving at 121 °C, 15 psi, 20 min, gave a maximum yield of 59.90 g/L of reducing sugars, which was slightly higher than that of NaOH (55.48 g/L) with the same conditions. Chemical composition analysis of the rice straw showed that the cellulose content was increased to 71% and 66% after pretreatments with NaOH and KOH, respectively. Fourier Transform Infrared (FTIR) spectroscopy revealed that solubilization and removal of the lignin component also took place. The scanning electron microscope (SEM) analysis showed a marked change in the morphological structure of the treated rice straw compared to the untreated rice straw. These results suggested that pretreatment of rice straw with either 2% (w/v) NaOH or KOH at high temperature could be a promising pretreatment method for sugars production. North Carolina State University 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37341/1/Effects%20of%20chemical%20and%20thermal%20pretreatments%20on%20the%20enzymatic%20saccharification%20of%20rice%20straw%20for%20sugars%20production.pdf Mohamad Remli, Nurul Atika and Md. Shah, Umi Kalsom and Mohamad, Rosfarizan and Abd. Aziz, Suraini (2014) Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production. BioResources, 9 (1). pp. 510-522. ISSN 1930-2126 http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_09_1_510_Remli_Pretreatment_Rice_Straw
institution UPM IR
collection UPM IR
language English
description The effects of alkaline pretreatment with NaOH, KOH, Ca(OH)2, and NaOCl at varying temperatures and concentrations on the production of sugars, changes in the morphological structure, and the chemical composition of rice straw were evaluated. Enzymatic saccharification of 2% (w/v) KOH-treated rice straw with autoclaving at 121 °C, 15 psi, 20 min, gave a maximum yield of 59.90 g/L of reducing sugars, which was slightly higher than that of NaOH (55.48 g/L) with the same conditions. Chemical composition analysis of the rice straw showed that the cellulose content was increased to 71% and 66% after pretreatments with NaOH and KOH, respectively. Fourier Transform Infrared (FTIR) spectroscopy revealed that solubilization and removal of the lignin component also took place. The scanning electron microscope (SEM) analysis showed a marked change in the morphological structure of the treated rice straw compared to the untreated rice straw. These results suggested that pretreatment of rice straw with either 2% (w/v) NaOH or KOH at high temperature could be a promising pretreatment method for sugars production.
format Article
author Mohamad Remli, Nurul Atika
Md. Shah, Umi Kalsom
Mohamad, Rosfarizan
Abd. Aziz, Suraini
spellingShingle Mohamad Remli, Nurul Atika
Md. Shah, Umi Kalsom
Mohamad, Rosfarizan
Abd. Aziz, Suraini
Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production
author_facet Mohamad Remli, Nurul Atika
Md. Shah, Umi Kalsom
Mohamad, Rosfarizan
Abd. Aziz, Suraini
author_sort Mohamad Remli, Nurul Atika
title Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production
title_short Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production
title_full Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production
title_fullStr Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production
title_full_unstemmed Effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production
title_sort effects of chemical and thermal pretreatments on the enzymatic saccharification of rice straw for sugars production
publisher North Carolina State University
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/37341/1/Effects%20of%20chemical%20and%20thermal%20pretreatments%20on%20the%20enzymatic%20saccharification%20of%20rice%20straw%20for%20sugars%20production.pdf
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score 13.4562235

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