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Title: Pseudo-lignin Formation during Dilute Acid Pretreatment for Cellulosic Ethanol

Abstract

Dilute acid-based pretreatment represents one of the most important pretreatment technologies to reduce biomass recalcitrance and it has been successfully applied to a wide range of feedstocks. During this type of pretreatment, the relative lignin content usually increases partially due to the loss of carbohydrates. More importantly, it has been reported that the increase of lignin content after dilute acid pretreatment is mainly due to the formation of pseudo-lignin. Furthermore, the exact reaction mechanisms leading to the formation of pseudo-lignin is still under investigation. However, it has been proposed that rearrangement of hydroxymethylfurfural (HMF) or furfural can produce aromatic type of compounds which can further undergo polymerization reactions to from a lignin-like polyphenolic structures termed as pseudo-lignin. Likewise, this mini-review mainly covers recent advances in understanding the fundamentals of pseudo-lignin formation during dilute acid pretreatment, the impact of its formation on enzymatic hydrolysis, and how to suppress its formation during dilute acid pretreatment.

Authors:
 [1]; ORCiD logo [2]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1376592
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Recent Advances in Petrochemical Science
Additional Journal Information:
Journal Volume: 1; Journal Issue: 1; Journal ID: ISSN 2575-8578
Publisher:
Juniper Publishers
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; biomass recalcitrance; pseudo-lignin; dilute acid pretreatment; enzymatic hydrolysis; hydroxymethylfurfural; furfural

Citation Formats

Meng, Xianzhi, and Ragauskas, Arthur J. Pseudo-lignin Formation during Dilute Acid Pretreatment for Cellulosic Ethanol. United States: N. p., 2017. Web. doi:10.19080/RAPSCI.2017.01.555551.
Meng, Xianzhi, & Ragauskas, Arthur J. Pseudo-lignin Formation during Dilute Acid Pretreatment for Cellulosic Ethanol. United States. doi:10.19080/RAPSCI.2017.01.555551.
Meng, Xianzhi, and Ragauskas, Arthur J. Mon . "Pseudo-lignin Formation during Dilute Acid Pretreatment for Cellulosic Ethanol". United States. doi:10.19080/RAPSCI.2017.01.555551. https://www.osti.gov/servlets/purl/1376592.
@article{osti_1376592,
title = {Pseudo-lignin Formation during Dilute Acid Pretreatment for Cellulosic Ethanol},
author = {Meng, Xianzhi and Ragauskas, Arthur J.},
abstractNote = {Dilute acid-based pretreatment represents one of the most important pretreatment technologies to reduce biomass recalcitrance and it has been successfully applied to a wide range of feedstocks. During this type of pretreatment, the relative lignin content usually increases partially due to the loss of carbohydrates. More importantly, it has been reported that the increase of lignin content after dilute acid pretreatment is mainly due to the formation of pseudo-lignin. Furthermore, the exact reaction mechanisms leading to the formation of pseudo-lignin is still under investigation. However, it has been proposed that rearrangement of hydroxymethylfurfural (HMF) or furfural can produce aromatic type of compounds which can further undergo polymerization reactions to from a lignin-like polyphenolic structures termed as pseudo-lignin. Likewise, this mini-review mainly covers recent advances in understanding the fundamentals of pseudo-lignin formation during dilute acid pretreatment, the impact of its formation on enzymatic hydrolysis, and how to suppress its formation during dilute acid pretreatment.},
doi = {10.19080/RAPSCI.2017.01.555551},
journal = {Recent Advances in Petrochemical Science},
number = 1,
volume = 1,
place = {United States},
year = {Mon Apr 17 00:00:00 EDT 2017},
month = {Mon Apr 17 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
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