Mild fractionation of sugarcane bagasse into fermentable sugars and β-O-4 linkage-rich lignin based on acid-catalysed crude glycerol pretreatment.

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ID: 119901
2020
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Abstract
Acid-catalysed crude glycerol (ACG) pretreatment was carried out at 110 °C and 130 °C for mild fractionation of sugarcane bagasse into fermentable sugars and high-quality lignin. ACG pretreatment at 110 °C led to sugar yields of 71%-74%, comparable to those with acid-catalysed reagent-grade glycerol (AG). ACG pretreatment removed more lignin (53%-75%) than AG pretreatment (38%-49%), likely due to the presence of organic impurities in ACG. Hence, 28% more lignin was recovered from ACG pretreatment hydrolysate than with the AG pretreatment. NMR analysis revealed that recovered lignin was modified by glycerol through etherification of β-aryl ethers and esterification of hydroxycinnamic acids, which prevented lignin condensation and led to the generation of β-O-4 linkage-rich lignin at mild conditions (110 °C for 3 h and 5 h). This study suggests that crude glycerol is a suitable low-cost solvent for mild fractionation of lignocellulosic biomass into fermentable sugars and high-quality lignin for value-adding applications.
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hassanpour2020mildbioresource Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Hassanpour, Morteza;Abbasabadi, Mahsa;Moghaddam, Lalehvash;Sun, Fubao Fuelbiol;Gebbie, Leigh;Te'o, Valentino Setoa Junior;O'Hara, Ian M;Zhang, Zhanying;
Journal Bioresource technology
Year 2020
DOI
S0960-8524(20)31331-6
URL
Keywords
NMR biorefinery delignification lignocellulose biodiesel organosolv

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