Evaluation of pretreatment effect on lignin extraction from wheat straw by deep eutectic solvent

2021 ◽  
pp. 126174
Author(s):  
Rui Lou ◽  
Xiao Zhang
Keyword(s):  
Wheat Straw ◽  
Deep Eutectic Solvent ◽  
Pretreatment Effect ◽  
Lignin Extraction

scholarly journals Enhanced Enzymatic Hydrolysis and Lignin Extraction of Wheat Straw by Triethylbenzyl Ammonium Chloride/Lactic Acid-Based Deep Eutectic Solvent Pretreatment

ACS Omega ◽  
2019 ◽  
Vol 4 (22) ◽  
pp. 19829-19839 ◽  
Author(s):  
Yao Liu ◽  
Jiayi Zheng ◽  
Jiangxiong Xiao ◽  
Xianda He ◽  
Kexuan Zhang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Ammonium Chloride ◽  
Deep Eutectic Solvent ◽  
Lignin Extraction

Zinc-based deep eutectic solvent-mediated hydroxylation and demethoxylation of lignin for the production of wood adhesive

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89599-89608 ◽  
Author(s):  
Shu Hong ◽  
Hailan Lian ◽  
Xiang Sun ◽  
Dong Pan ◽  
Arturo Carranza ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Chemical Reactivity ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Wood Adhesive ◽  
Alkali Lignin ◽  
Different Temperatures

Choline chloride–ZnCl2 deep-eutectic solvent (ChCl–ZnCl2 DES), mole ratio 1 : 2, was used to improve the chemical reactivity of wheat straw alkali lignin under different temperatures and times of pretreatment.

scholarly journals Characterization of Lignin Extracted from Willow by Deep Eutectic Solvent Treatments

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 869 ◽  
Author(s):  
Gaojin Lyu ◽  
Tengfei Li ◽  
Xingxiang Ji ◽  
Guihua Yang ◽  
Yu Liu ◽  
...  
Keyword(s):  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Molar Ratio ◽  
Total Phenolic ◽  
Aryl Ether ◽  
Hydroxyl Content ◽  
Force Microscopy ◽  
Molecular Weights ◽  
Lignin Extraction

Purity, morphology, and structural characterization of synthesized deep eutectic solvent (DES)-lignins (D6h, D9h, D12h, D18h, D24h) extracted from willow (Salix matsudana cv. Zhuliu) after treatment with a 1:10 molar ratio of choline chloride and lactic acid at 120 °C for 6, 9, 12, 18, and 24 h were carried out. The purity of DES-lignin was ~95.4%. The proportion of hydrogen (H) in DES-lignin samples increased from 4.22% to 6.90% with lignin extraction time. The DES-lignin samples had low number/weight average molecular weights (1348.1/1806.7 to 920.2/1042.5 g/mol, from D6h to D24h) and low particle sizes (702–400 nm). Atomic force microscopy (AFM) analysis demonstrated that DES-lignin nanoparticles had smooth surfaces and diameters of 200–420 nm. Syringyl (S) units were dominant, and total phenolic hydroxyl content and total hydroxyl content reached their highest values of 2.05 and 3.42 mmol·g−1 in D12h and D6h, respectively. β-Aryl ether (β-O-4) linkages were eliminated during DES treatment.

Production of xylo-oligosaccharides from wheat straw using microwave assisted deep eutectic solvent pretreatment

2021 ◽  
Vol 164 ◽  
pp. 113393
Author(s):  
Asli Isci ◽  
Nils Thieme ◽  
Anne Lamp ◽  
Vladimir Zverlov ◽  
Martin Kaltschmitt
Keyword(s):  
Wheat Straw ◽  
Deep Eutectic Solvent ◽  
Microwave Assisted

scholarly journals Fabrication of Magnetic Catalyst Fe3O4-SiO2-V3 and Its Application on Lignin Extraction from Corncob in Deep Eutectic Solvent

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1545
Author(s):  
Maonan Yuan ◽  
Zhen Wang ◽  
Yu Liu ◽  
Guihua Yang
Keyword(s):  
Molecular Weight ◽  
Choline Chloride ◽  
Average Molecular Weight ◽  
Deep Eutectic Solvent ◽  
Reaction System ◽  
2D Nmr ◽  
Number Average Molecular Weight ◽  
Batch Experiments ◽  
Weight Average Molecular Weight ◽  
Lignin Extraction

Fe3O4-SiO2-V3 was prepared by deposited H6PMo9V3O40 on Fe3O4-SiO2 and employed as a catalyst to extract lignin from corncob in deep eutectic solvent (choline chloride/lactic acid = 1/10). Batch experiments were conducted in an autoclave under the conditions of 500 kPa, 90–130 °C and 15 h, while the dosage of the catalyst was set as a variable. Results indicated that the catalyst could effectively improve the qualities of the lignin, while the characteristics of the lignin showed prominent changes with the participation of the catalyst: the extraction rate increased from 71.65% to 98.13%, the purity was improved from 85.62% to 97.09%, and both the number average molecular weight and the weight average molecular weight also decreased significantly. Besides, the molecular distribution of the lignin achieved from the CC-LA-Fe-Si-V3 reaction system was found to be more highly concentrated (Polydispersity index = 1.746). Results from 2D NMR HSQC analysis indicated that lignin fractions achieved from the CC-LA-Fe-Si-V3 system showed distinct destruction involving C2-H2 in guaiacyl units (G), C5-H5 in guaiacyl units (G), and the Cγ-Hγ in γ-hydroxylated β-O-4′ substructures, but little changes in the Cγ-Hγ in phenylcoumaran substructures.

Facile Extraction of Wheat Straw by Deep Eutectic Solvent (DES) to Produce Lignin Nanoparticles

2019 ◽  
Vol 7 (12) ◽  
pp. 10248-10256 ◽  
Author(s):  
Rui Lou ◽  
Ruoshui Ma ◽  
Kuan-ting Lin ◽  
Aftab Ahamed ◽  
Xiao Zhang
Keyword(s):  
Wheat Straw ◽  
Deep Eutectic Solvent
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