Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity

Lauberts, Māris; Sevastyanova, Olena; Ponomarenko, Jevgenija; Dizhbite, Tatiana; Dobele, Gaļina; Voļperts, Aleksandrs; Lauberte, Līga; Телышева, Галина

doi:10.1016/j.indcrop.2016.11.004

Cited by 46 publications

(33 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similar results are found by other authors. 11,31,32 Although OS, KS and OE showed similar phenolic content, the stronger DPPHscavenging capacity of OE was mainly due to the highest methoxyl content and lowest carboxylic acid content. On the other hand, the lower radical scavenging activity of KE could be partly attributed to the presence of very high content of carboxylic acids compared to other lignin samples as well as its low phenolic content together with its low purity.…”

Section: Determination Of Antioxidant Activity and Phenolic Contentmentioning

confidence: 99%

Potential use of kraft and organosolv lignins as a natural additive for healthcare products

et al. 2018

View full text Add to dashboard Cite

show abstract

Section: Determination Of Antioxidant Activity and Phenolic Contentmentioning

confidence: 99%

Potential use of kraft and organosolv lignins as a natural additive for healthcare products

et al. 2018

View full text Add to dashboard Cite

show abstract

“…[101] As a novel solvent, the ionic liquid was also investigated to fractionate technical lignin with high purity. [108] In addition, Dai et al developed a novel hydrogel-assisted fractionation approach using lignin-containing cellulose (Cell-AL) hydrogel to fractionate lignin to produce uniform lignins. [118] Depending on the future use of the lignin, the right technique to obtain the fractions has to be chosen.…”

Section: Further Fractionation Of Ligninmentioning

confidence: 99%

Biomass Fractionation and Lignin Fractionation towards Lignin Valorization

et al. 2020

View full text Add to dashboard Cite

Lignin, as the most abundant aromatic biopolymer in nature, has attracted great attention due to the complexity and richness of its functional groups for value‐added applications. The yield of production of lignin and the reactivity of prepared lignin are very important to guarantee the study and development of lignin‐based chemicals and materials. Various fractionation techniques have been developed to obtain high yield and relatively high‐purity lignin as well as carbohydrates (hemicelluloses and celluloses) and to reduce the condensed and degraded nature of conventional biorefinery lignin. Herein, novel and efficient biomass fractionation and lignin fractionation towards lignin valorization are summarized and discussed.

show abstract

“…The effective separation of lignin from lignocellulosic biomass, nonetheless, is key to subsequent utilization. A variety of isolation technologies have been developed to effect its isolation such as alkaline, enzymatic, and dilute acid hydrolysis, organosolv, ionic liquids, and deep eutectic solvent extraction [7,8,9,10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Lignin Extracted from Willow by Deep Eutectic Solvent Treatments

Lyu

et al. 2018

Polymers

View full text Add to dashboard Cite

Purity, morphology, and structural characterization of synthesized deep eutectic solvent (DES)-lignins (D 6h , D 9h , D 12h , D 18h , D 24h ) 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 D 6h to D 24h ) 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 D 12h and D 6h , respectively. β-Aryl ether (β-O-4) linkages were eliminated during DES treatment.

show abstract

Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity

Cited by 46 publications

References 55 publications

Potential use of kraft and organosolv lignins as a natural additive for healthcare products

Potential use of kraft and organosolv lignins as a natural additive for healthcare products

Biomass Fractionation and Lignin Fractionation towards Lignin Valorization

Characterization of Lignin Extracted from Willow by Deep Eutectic Solvent Treatments

Contact Info

Product

Resources

About