Tetrahydro-2-furanmethanol pretreatment of eucalyptus to enhance cellulose enzymatic hydrolysis and to produce high-quality lignin

Xu, Ying-Hong; Qian, Zhou; Li, Ming-Fei; Bian, Jing; Peng, Feng

doi:10.1016/j.biortech.2019.02.088

Cited by 23 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Table S2,† over 95% removed lignin was recovered for all the biphasic solvent pretreatment runs, which is extraordinarily superior to those of most previously reported pretreatment systems such as typical alcohol organosolv pretreatment, 38 ionic liquid/ p -toluenesulfonic acid pretreatment, 39 dioxane and methanol solution/HCl pretreatment, 40 and tetrahydro-2-furanmethanol pretreatment systems. 41 In addition, negligible sugars were present in the recovered lignin. This result indicated that high purity-lignin could be simply obtained after our biphasic solvent pretreatment, which could facilitate its subsequent structural revelation and further valorization.…”

Section: Resultsmentioning

confidence: 99%

Novel biphasic DES/GVL solvent for effective biomass fractionation and valorization

et al. 2023

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Novel biphasic DES/GVL solvent for effective biomass fractionation and valorization

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The recovery yield and purity of isolated lignin was analyzed and the results are shown in Table S1. The lignin recovery yields throughout the pretreatment were all beyond 95 %, and it is quite higher than most conventional pretreatment systems which only have around 50 % lignin yield such as organosolv pretreatment, [37] p ‐toluenesulfonic acid‐assisted ionic liquid pretreatment, [38] methanol and dioxane solution/hydrochloric acid pretreatment, [39] and tetrahydro‐2‐furanmethanol pretreatment [40] . The higher lignin recovery yield in this study might be attributed to the diol grafting onto the side chain region of lignin which yielded a well‐preserved lignin structure during the pretreatment, and this will be discussed in the following section.…”

Section: Resultsmentioning

confidence: 99%

Efficient Fast Fractionation of Biomass Using a Diol‐Based Deep Eutectic Solvent for Facilitating Enzymatic Hydrolysis and Obtaining High‐Quality Lignin

Cheng,

Liu,

Zhan

et al. 2024

ChemSusChem

View full text Add to dashboard Cite

Current DES pretreatment is often performed under relatively severer conditions with high temperature, long time, and high DES usage. This work studied a short‐time diol DES (deep eutectic solvent) pretreatment under mild conditions to fractionate bamboo, facilitate enzymatic hydrolysis, and obtain high‐quality lignin. At an optimized condition of 130 °C for 10 min, lignin and xylan removal reached 61.34% and 84.15%, with residual glucan showing an ~90% enzymatic hydrolysis yield. Equally important, the dissolved lignin could be readily recovered with 97.51% yield, exhibiting 96.65% β‐O‐4 preservation. The fractionation and lignin protection mechanisms were unveiled by XRD, FTIR, cellulose‐DP, 2D HSQC NMR, 31P NMR and GPC analysis. This study highlighted that short‐time fractionation of bamboo can be achieved by a diol‐based DES which is an ideal strategy to upgrade the lignocellulose biomass for high enzymatic hydrolysis yields and high‐quality lignin stream.

show abstract

“…Exceptions include the works carried out by Matsakas et al [36] using silver birch wood chips, by Patel et al [37] using Norway spruce, and by Yuan et al [38] using corn stover, wherein an S/L ratio of 1:2 was used. Research works in the literature reported lignin-rich fractions containing >90% lignin [8] achieved via different organosolv pretreatment strategies, namely HCl-catalyzed tetrahydro-2-furanmethanol pretreatment of eucalyptus [39], auto-catalyzed ethanol pretreatment of Eucalyptus nitens bark [40], and oxalic acid-catalyzed glycerol pretreatment of sugarcane trash [41]. The research on organosolv pretreatment has been very heterogeneous regarding the range of systems and substrates used, making in-depth knowledge difficult to achieve due to the wide range of results achieved.…”

Section: Discussionmentioning

confidence: 99%

Biorefining Oat Husks into High-Quality Lignin and Enzymatically Digestible Cellulose with Acid-Catalyzed Ethanol Organosolv Pretreatment

2020

View full text Add to dashboard Cite

Oat husks are low-value lignocellulosic residues of oat processing that carry an environmental impact. Their polymers (cellulose, hemicellulose, and lignin) can be converted into a wide variety of value-added products; however, efficient pretreatment methods are needed that allow their fine separation for further tailored valorization. This study pioneered the use of milling-free and low acid-catalyzed ethanol organosolv for the delignification of oat husks, allowing their conversion into three high-quality streams, namely, glucan-rich, lignin-rich, and hemicellulosic compound-rich streams. Temperature, retention time, and solid-to-liquid ratio were found to impact the delignification of oat husks when using a one-factor-at-a-time strategy. The ideal conditions that were found (210 °C, 90 min, and solid-to-liquid ratio of 1:2) culminated into glucan and lignin fractions containing 74.5% ± 11.4% glucan and 74.9% ± 7.6% lignin, respectively. These high-purity lignin fractions open the possibility for higher value applications by lignin, potentially impacting the feasibility of second generation biorefineries. The glucan fraction showed 90% digestibility after 48 h of hydrolysis with 10 filter paper units of enzyme cocktail per gram of glucan. Considering the absence of size reduction and high solid loading, together with the quality of the obtained streams, organosolv pretreatment could be a potential strategy for the valorization of oat lignocellulosic residues.

show abstract

Tetrahydro-2-furanmethanol pretreatment of eucalyptus to enhance cellulose enzymatic hydrolysis and to produce high-quality lignin

Cited by 23 publications

References 19 publications

Novel biphasic DES/GVL solvent for effective biomass fractionation and valorization

Novel biphasic DES/GVL solvent for effective biomass fractionation and valorization

Efficient Fast Fractionation of Biomass Using a Diol‐Based Deep Eutectic Solvent for Facilitating Enzymatic Hydrolysis and Obtaining High‐Quality Lignin

Biorefining Oat Husks into High-Quality Lignin and Enzymatically Digestible Cellulose with Acid-Catalyzed Ethanol Organosolv Pretreatment

Contact Info

Product

Resources

About