Characterization of milled wood lignin and ethanol organosolv lignin from miscanthus

Hage, Roland El; Brosse, Nicolas; Chrusciel, Laurent; Sánchez, Christian; Sannigrahi, Poulomi; Ragauskas, Arthur J.

doi:10.1016/j.polymdegradstab.2009.07.007

Cited by 451 publications

(303 citation statements)

References 23 publications

Supporting

Mentioning

270

Contrasting

Unclassified

Order By: Relevance

“…Both the method of extraction as well as the plant source for lignin can result in different chemical properties that may alter enzyme-lignin interactions (35,36,53). Considering alternate sources of lignin and different extraction methods could build upon this work.…”

Section: Molecularmentioning

confidence: 99%

Predicting Enzyme Adsorption to Lignin Films by Calculating Enzyme Surface Hydrophobicity

Sammond

Yarbrough

Mansfield

et al. 2014

Journal of Biological Chemistry

127

115

View full text Add to dashboard Cite

Background:Lignin is a plant cell wall polymer that inhibits enzymatic saccharification of polysaccharides for the production of biofuel. Results: The adsorption of enzymes to lignin surfaces correlates to solvent-exposed hydrophobic clusters. Conclusion: Hydrophobicity, not surface charge, identifies proteins that preferentially adsorb to lignin. Significance: The method could be used to design improved cellulase cocktails to lower the cost of biofuel production.

show abstract

Section: Molecularmentioning

confidence: 99%

Predicting Enzyme Adsorption to Lignin Films by Calculating Enzyme Surface Hydrophobicity

Sammond

Yarbrough

Mansfield

et al. 2014

Journal of Biological Chemistry

127

115

View full text Add to dashboard Cite

show abstract

“…Lignin is a natural polymer found in wood, being one of the most abundant biomacromolecules, second only to cellulose in natural abundance 1,2 . Lignin is a complex threedimensional network polymer that serves as a continuous matrix component in plant cell walls 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the extraction method used and original source the physicalchemical characteristics differ considerably 2,3 . Various methods have been developed to separate lignin from the other constituents of the lignocellulosic materials [1][2][3][4] . Since each separation method modifies to some degree the chemical structure of the naturally occurring lignin, so lignin is conventionally named after the method of separation used.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the types and amounts of intra-and intermolecular hydrogen bonding present in lignin from softwoods or hardwoods may vary and influence its physical and chemical properties 2 . Several techniques have been used to characterize the structural aspects and functional groups present in lignin [1][2][3][4][5] . Therefore, infrared spectroscopy has been proven to be a highly effective means of investigating specific interactions within and between molecules [6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Materials produced from plant biomass: part III: degradation kinetics and hydrogen bonding in lignin

Poletto

Zattera

2013

Mat. Res.

View full text Add to dashboard Cite

In this study Klason lignins from Eucalyptus grandis (LEUG) and Pinus taeda (LPIT) were characterized using Fourier transform infrared (FTIR) spectroscopy and thermogravimetry (TGA). The degradation kinetic parameters were determined by TGA using the Kissinger method. Thermogravimetric results showed that LPIT had higher thermal stability and also higher activation energy than LEUG. FTIR results showed that the average strength of intermolecular interactions and enthalpy of hydrogen bond formation among the phenolic groups are higher for LPIT than for LEUG. The results demonstrated that differences between thermal stability and degradation mechanisms might be associated with differences in hydrogen bonding in lignin.

show abstract

“…The signals at 114.9 and 132.6 ppm were assigned to C-5 carbons of non-etherified guaiacyl units, and C-1 carbons of nonetherified syringyl units, respectively. The weak peak at 103.6 ppm was attributed to C-2/C-6 carbons of syringyl units, and the signal at 127.3 ppm to C-2/C-6 carbons in hydroxyphenyl units (El Hage et al 2009). Figure 2 shows that EMAL derived from EB contained a high proportion of syringyl moieties.…”

Section: Solid-state 13 C-nmr Spectroscopy Of Emalmentioning

confidence: 99%

Changes in the Microstructure and Components of Eulaliopsis binata Treated by Continuous Screw Extrusion Steam Explosion

Feng¹,

Lei²,

Liang³

et al. 2016

BioResources

View full text Add to dashboard Cite

Eulaliopsis binata (EB) was pretreated by continuous screw extrusion steam explosion (SESE), with the aim of converting EB into useful materials on an industrial scale. The three main chemical components were characterized by component analysis using the Van Soest fiber detergent system, ultraviolet (UV) absorption spectrophotometry, gel permeation chromatography (GPC), and carbon-13 nuclear magnetic resonance ( 13 C-NMR) spectroscopy. Changes in the contents of detergent soluble species in the Van Soest process revealed the partial degradation of hemicellulose and cellulose, and the partial removal of lignin. GPC indicated that the molecular weight of lignin decreased from 4194 to 3710 g/mol over the first three SESE pretreatment cycles, but then increased to 4592 g/mol following the fourth SESE pretreatment cycle. UV absorption and 13 C-NMR results indicated the partial removal of lignin and the depolymerization and repolymerization of lignin during SESE pretreatment. Scanning electron microscopy (SEM) showed that the epidermis and parenchyma of EB were almost completely desquamated. X-ray diffraction (XRD) revealed that the crystallinity of EB initially increased and then subsequently decreased slightly, with increasing number of SESE pretreatment cycles. The varying physicochemical properties of EB resulting from different numbers of pretreatment cycles may find use in more diverse applications.

show abstract

Characterization of milled wood lignin and ethanol organosolv lignin from miscanthus

Cited by 451 publications

References 23 publications

Predicting Enzyme Adsorption to Lignin Films by Calculating Enzyme Surface Hydrophobicity

Predicting Enzyme Adsorption to Lignin Films by Calculating Enzyme Surface Hydrophobicity

Materials produced from plant biomass: part III: degradation kinetics and hydrogen bonding in lignin

Changes in the Microstructure and Components of Eulaliopsis binata Treated by Continuous Screw Extrusion Steam Explosion

Contact Info

Product

Resources

About