Selective fractionation and enzymatic hydrolysis of Eucalyptus nitens wood

Penín, Lucía; Peleteiro, Susana; Santos, Valentín; Alonso, José Luís; Parajó, Juan Carlos

doi:10.1007/s10570-018-2109-4

Cited by 18 publications

(19 citation statements)

References 71 publications

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“…The E. nitens wood lot employed in experiments was the same employed in a previous article [21] and showed the following contents of the structural components (as wt%): cellulose, 42%; hemicelluloses, 22.3% and Klason lignin, 21.4%. Other components appearing in minor amounts were: ash, 0.25%; extractives, 4.7%; and acid soluble lignin, 1.5%.…”

Section: Wood Compositionmentioning

confidence: 99%

“…The aqueous fractionation of wood was performed under non-isothermal conditions reaching up to 195 • C, the temperature at which the maximum conversion of xylan into soluble saccharides was achieved [21]. The combined effects of temperature and time during the reaction were assessed in terms of severity as defined by Overend and Chornet [22]:…”

Section: Wood Autohydrolysismentioning

confidence: 99%

“…Operating under these conditions, the autohydrolyzed wood (AW), was recovered at 72.8% solid yield, while 80.7% xylan was solubilized. The compositions of the solid and liquid phases from autohydrolysis processing are the same detailed in Penín et al [21].…”

Section: Wood Autohydrolysismentioning

confidence: 99%

“…The contents of cellulose and hemicellulose were measured from HPLC determination of the monosaccharides present in hydrolyzates. More detailed information on the methodology can be found in Penín et al [21]. All NMR reagents were purchased from Sigma-Aldrich/Merck KGaA, Darmstadt, Germany.…”

Section: Raw Materials and Analysismentioning

confidence: 99%

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Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids

et al. 2020

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Eucalyptus nitens wood samples were subjected to consecutive stages of hydrothermal processing for hemicellulose solubilization and delignification with an ionic liquid, i.e., either 1-butyl-3-methylimidazolium hydrogen sulfate or triethylammonium hydrogen sulfate. Delignification experiments were carried out a 170 °C for 10–50 min. The solid phases from treatments, i.e., cellulose-enriched solids, were recovered by centrifugation, and lignin was separated from the ionic liquid by water precipitation. The best delignification conditions were identified on the basis of the results determined for delignification percentage, lignin recovery yield, and cellulose recovery in solid phase. The lignins obtained under selected conditions were characterized in deep by 31P-NMR, 13C-NMR, HSQC, and gel permeation chromatography. The major structural features of the lignins were discussed in comparison with the results determined for a model Ionosolv lignin.

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Section: Wood Compositionmentioning

confidence: 99%

Section: Wood Autohydrolysismentioning

confidence: 99%

Section: Wood Autohydrolysismentioning

confidence: 99%

Section: Raw Materials and Analysismentioning

confidence: 99%

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Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids

et al. 2020

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“…The sample of Eucalyptus red grandis used in this study had a high initial glucan content when compared to literature values 39.9-49%. 57,58 To draw a conclusion about the best eucalyptus species to use as feedstock for a given purpose, several samples should be analysed in order to have a statistically signicant amount that will allow to assess the variability between trees of different ages, grown in different locations, etc. In this study it has been assumed that the chemical composition of the sieved samples (180-850 mm, 20 + 80 US mesh scale) is the same between the different fractions recovered and the chemical composition of the plank used is representative of all the zones of the tree.…”

Section: Effect Of Intensied [N 2220 ][Hso 4 ] On Pretreatmentmentioning

confidence: 99%

Eucalyptus red grandis pretreatment with protic ionic liquids: effect of severity and influence of sub/super-critical CO₂ atmosphere on pretreatment performance

et al. 2020

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Sn Doping on Ta₂O₅ Facilitates Glucose Isomerization for Enriched 5‐Hydroxymethylfurfural Production and its True Response Prediction using a Neural Network Model

Mahala

Arumugam²,

Kumar

et al. 2021

ChemCatChem

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Here, we describe the maximum production of 5‐HMF using glucose over Sn doped Ta2O5 in a binary solvent system. The analytical characterizations established that Sn4+ in the catalyst interacts with Ta2O5 and offers the Lewis acid sites favorable for glucose isomerization to fructose. Similarly, the Ta2O5 support offers both the Lewis and Brønsted acid sites to promote fructose dehydration to 5‐HMF. The catalyst provided favorable conditions for the sequential sugar(s) transformation, i. e., glucose isomerization followed by fructose dehydration, which resulted in a 5‐HMF yield as high as 57 % wt. and 80 % selectivity under modest reaction conditions in a water‐DMSO system using ST1 (1 % Sn on Ta2O5). The separate fructose to 5‐HMF conversion study verified the negligible influence of Sn on the dehydration reaction. Moreover, the catalyst's systematic sugar conversion enabled a >65 % fructose formation, which accounts for the enriched 5‐HMF synthesis. The neural network model best represented the 5‐HMF data (<4 % MAE for glucose and fructose conversions).

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Selective fractionation and enzymatic hydrolysis of Eucalyptus nitens wood

Cited by 18 publications

References 71 publications

Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids

Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids

Eucalyptus red grandis pretreatment with protic ionic liquids: effect of severity and influence of sub/super-critical CO₂ atmosphere on pretreatment performance

Sn Doping on Ta₂O₅ Facilitates Glucose Isomerization for Enriched 5‐Hydroxymethylfurfural Production and its True Response Prediction using a Neural Network Model

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Selective fractionation and enzymatic hydrolysis of Eucalyptus nitens wood

Cited by 18 publications

References 71 publications

Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids

Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids

Eucalyptus red grandis pretreatment with protic ionic liquids: effect of severity and influence of sub/super-critical CO2 atmosphere on pretreatment performance

Sn Doping on Ta2O5 Facilitates Glucose Isomerization for Enriched 5‐Hydroxymethylfurfural Production and its True Response Prediction using a Neural Network Model

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Eucalyptus red grandis pretreatment with protic ionic liquids: effect of severity and influence of sub/super-critical CO₂ atmosphere on pretreatment performance

Sn Doping on Ta₂O₅ Facilitates Glucose Isomerization for Enriched 5‐Hydroxymethylfurfural Production and its True Response Prediction using a Neural Network Model