Cargando…
Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment
Pretreatment of sugarcane bagasse (SCB) by aqueous acetic acid (AA), with the addition of sulfuric acid (SA) as a catalyst under mild condition (<110 °C), was investigated. A response surface methodology (central composite design) was employed to study the effects of temperature, AA concentration...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10304256/ https://www.ncbi.nlm.nih.gov/pubmed/37375244 http://dx.doi.org/10.3390/molecules28124689 |
_version_ | 1785065464150360064 |
---|---|
author | Bai, Yuchen Tian, Mingke Dai, Zhiwei Zhao, Xuebing |
author_facet | Bai, Yuchen Tian, Mingke Dai, Zhiwei Zhao, Xuebing |
author_sort | Bai, Yuchen |
collection | PubMed |
description | Pretreatment of sugarcane bagasse (SCB) by aqueous acetic acid (AA), with the addition of sulfuric acid (SA) as a catalyst under mild condition (<110 °C), was investigated. A response surface methodology (central composite design) was employed to study the effects of temperature, AA concentration, time, and SA concentration, as well as their interactive effects, on several response variables. Kinetic modeling was further investigated for AA pretreatment using both Saeman’s model and the Potential Degree of Reaction (PDR) model. It was found that Saeman’s model showed a great deviation from the experimental results, while the PDR model fitted the experimental data very well, with determination coefficients of 0.95–0.99. However, poor enzymatic digestibility of the AA-pretreated substrates was observed, mainly due to the relatively low degree of delignification and acetylation of cellulose. Post-treatment of the pretreated cellulosic solid well improved the cellulose digestibly by further selectively removing 50–60% of the residual linin and acetyl group. The enzymatic polysaccharide conversion increased from <30% for AA-pretreatment to about 70% for PAA post-treatment. |
format | Online Article Text |
id | pubmed-10304256 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103042562023-06-29 Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment Bai, Yuchen Tian, Mingke Dai, Zhiwei Zhao, Xuebing Molecules Article Pretreatment of sugarcane bagasse (SCB) by aqueous acetic acid (AA), with the addition of sulfuric acid (SA) as a catalyst under mild condition (<110 °C), was investigated. A response surface methodology (central composite design) was employed to study the effects of temperature, AA concentration, time, and SA concentration, as well as their interactive effects, on several response variables. Kinetic modeling was further investigated for AA pretreatment using both Saeman’s model and the Potential Degree of Reaction (PDR) model. It was found that Saeman’s model showed a great deviation from the experimental results, while the PDR model fitted the experimental data very well, with determination coefficients of 0.95–0.99. However, poor enzymatic digestibility of the AA-pretreated substrates was observed, mainly due to the relatively low degree of delignification and acetylation of cellulose. Post-treatment of the pretreated cellulosic solid well improved the cellulose digestibly by further selectively removing 50–60% of the residual linin and acetyl group. The enzymatic polysaccharide conversion increased from <30% for AA-pretreatment to about 70% for PAA post-treatment. MDPI 2023-06-10 /pmc/articles/PMC10304256/ /pubmed/37375244 http://dx.doi.org/10.3390/molecules28124689 Text en © 2023 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 Bai, Yuchen Tian, Mingke Dai, Zhiwei Zhao, Xuebing Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment |
title | Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment |
title_full | Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment |
title_fullStr | Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment |
title_full_unstemmed | Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment |
title_short | Improving the Cellulose Enzymatic Digestibility of Sugarcane Bagasse by Atmospheric Acetic Acid Pretreatment and Peracetic Acid Post-Treatment |
title_sort | improving the cellulose enzymatic digestibility of sugarcane bagasse by atmospheric acetic acid pretreatment and peracetic acid post-treatment |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10304256/ https://www.ncbi.nlm.nih.gov/pubmed/37375244 http://dx.doi.org/10.3390/molecules28124689 |
work_keys_str_mv | AT baiyuchen improvingthecelluloseenzymaticdigestibilityofsugarcanebagassebyatmosphericaceticacidpretreatmentandperaceticacidposttreatment AT tianmingke improvingthecelluloseenzymaticdigestibilityofsugarcanebagassebyatmosphericaceticacidpretreatmentandperaceticacidposttreatment AT daizhiwei improvingthecelluloseenzymaticdigestibilityofsugarcanebagassebyatmosphericaceticacidpretreatmentandperaceticacidposttreatment AT zhaoxuebing improvingthecelluloseenzymaticdigestibilityofsugarcanebagassebyatmosphericaceticacidpretreatmentandperaceticacidposttreatment |