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Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw

Quinoa straw is rich in hemicellulose, and it could be hydrolyzed into xylose. It is a promising energy resource alternative that acts as a potential low-cost material for producing xylitol. In this study, quinoa straw was used as a substrate subjected to the hydrolysis of dilute sulfuric acid solut...

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Autores principales: Jin, Tingwei, Xing, Xiwen, Xie, Yubing, Sun, Yan, Bian, Sijia, Liu, Liying, Chen, Guang, Wang, Xinzhe, Yu, Xiaoxiao, Su, Yingjie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9820623/
https://www.ncbi.nlm.nih.gov/pubmed/36613957
http://dx.doi.org/10.3390/ijms24010516
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author Jin, Tingwei
Xing, Xiwen
Xie, Yubing
Sun, Yan
Bian, Sijia
Liu, Liying
Chen, Guang
Wang, Xinzhe
Yu, Xiaoxiao
Su, Yingjie
author_facet Jin, Tingwei
Xing, Xiwen
Xie, Yubing
Sun, Yan
Bian, Sijia
Liu, Liying
Chen, Guang
Wang, Xinzhe
Yu, Xiaoxiao
Su, Yingjie
author_sort Jin, Tingwei
collection PubMed
description Quinoa straw is rich in hemicellulose, and it could be hydrolyzed into xylose. It is a promising energy resource alternative that acts as a potential low-cost material for producing xylitol. In this study, quinoa straw was used as a substrate subjected to the hydrolysis of dilute sulfuric acid solution. Based on the production of xylose and inhibitors during hydrolysis, the optimal conditions for the hydrolysis of hemicellulose in quinoa straw were determined. Detoxification was performed via activated carbon adsorption. The optimal detoxification conditions were determined on the basis of major inhibitor concentrations in the hydrolysate. When the addition of activated carbon was 3% at 30 °C for 40 min, the removal of formic acid, acetic acid, furfural, and 5-HMF could reach 66.52%, 64.54%, 88.31%, and 89.44%, respectively. In addition to activated carbon adsorption, vacuum evaporation was further conducted to perform two-step detoxification. Subsequently, the detoxified hydrolysate was used for xylitol fermentation. The yield of xylitol reached 0.50 g/g after 96 h of fermentation by Candida tropicalis (CICC 1779). It is 1.2-fold higher than that obtained through the sole vacuum evaporation method. This study validated the feasibility of xylitol production from quinoa straw via a biorefinery process.
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spelling pubmed-98206232023-01-07 Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw Jin, Tingwei Xing, Xiwen Xie, Yubing Sun, Yan Bian, Sijia Liu, Liying Chen, Guang Wang, Xinzhe Yu, Xiaoxiao Su, Yingjie Int J Mol Sci Article Quinoa straw is rich in hemicellulose, and it could be hydrolyzed into xylose. It is a promising energy resource alternative that acts as a potential low-cost material for producing xylitol. In this study, quinoa straw was used as a substrate subjected to the hydrolysis of dilute sulfuric acid solution. Based on the production of xylose and inhibitors during hydrolysis, the optimal conditions for the hydrolysis of hemicellulose in quinoa straw were determined. Detoxification was performed via activated carbon adsorption. The optimal detoxification conditions were determined on the basis of major inhibitor concentrations in the hydrolysate. When the addition of activated carbon was 3% at 30 °C for 40 min, the removal of formic acid, acetic acid, furfural, and 5-HMF could reach 66.52%, 64.54%, 88.31%, and 89.44%, respectively. In addition to activated carbon adsorption, vacuum evaporation was further conducted to perform two-step detoxification. Subsequently, the detoxified hydrolysate was used for xylitol fermentation. The yield of xylitol reached 0.50 g/g after 96 h of fermentation by Candida tropicalis (CICC 1779). It is 1.2-fold higher than that obtained through the sole vacuum evaporation method. This study validated the feasibility of xylitol production from quinoa straw via a biorefinery process. MDPI 2022-12-28 /pmc/articles/PMC9820623/ /pubmed/36613957 http://dx.doi.org/10.3390/ijms24010516 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jin, Tingwei
Xing, Xiwen
Xie, Yubing
Sun, Yan
Bian, Sijia
Liu, Liying
Chen, Guang
Wang, Xinzhe
Yu, Xiaoxiao
Su, Yingjie
Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw
title Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw
title_full Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw
title_fullStr Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw
title_full_unstemmed Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw
title_short Evaluation of Preparation and Detoxification of Hemicellulose Hydrolysate for Improved Xylitol Production from Quinoa Straw
title_sort evaluation of preparation and detoxification of hemicellulose hydrolysate for improved xylitol production from quinoa straw
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9820623/
https://www.ncbi.nlm.nih.gov/pubmed/36613957
http://dx.doi.org/10.3390/ijms24010516
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