Deep Eutectic Solvents: Fractionation of Wheat Straw

Jablonský, Michal; Škulcová, Andrea; Kamenská, Lucia; Vrška, Milan; Šíma, Jozef

doi:10.15376/biores.10.4.8039-8047

Cited by 113 publications

(68 citation statements)

References 2 publications

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“…Valorisation is a key component of an economic and environmental lignocellulosic biorefinery (Jablonsky et al 2015b;Surina et al 2015). There are many new modes of pulp processing.…”

Section: Introductionmentioning

confidence: 99%

“…DESs have potential applications in the pulp, paper, and recycling industries. DESs have been used to delignify different biomasses such as wheat straw (de Dios 2013;Jablonsky et al 2015b;Skulcova et al 2016), rice straw (Kumar et al 2015), pine wood (de Dios 2013), and thermomechanical pulp (Choi et al 2016). Lignin is the second most abundant natural polymer after holocellulose.…”

Section: Introductionmentioning

confidence: 99%

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UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

et al. 2017

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In this short communication, UV/Vis spectrophotometry is described as an analytical tool for the quantification of lignin content in deep eutectic solutions. The lignin was solubilized with different deep eutectic solvent (DES). DESs were prepared as binary mixtures of choline chloride with lactic acid (1:9); (1:10); ethylene glycol (1:2); glycerol (1:2) and alanine:lactic acid (1:9), and betaine:lactic acid (1:2). The UV-Vis spectrometric quantification of the solubilized lignins was independent of the type of solubilized lignin. The approach consists of measuring the absorbance of a solution of lignins dissolved in the deep eutectic solvents at an absorbance of 440 nm.

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“…Valorisation is a key component of an economic and environmental lignocellulosic biorefinery (Jablonsky et al 2015b;Surina et al 2015). There are many new modes of pulp processing.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

et al. 2017

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“…This renewable resource is a major alternative raw material for the chemical industry. Valorisation is a key component of an economic lignocellulosic biorefinery (Jablonsky et al 2015a;Surina et al 2015). For many years, research has tried to find applications for extractives other than their use as fuel.…”

Section: Introductionmentioning

confidence: 99%

Yield of Polyphenolic Substances Extracted From Spruce (Picea abies) Bark by Microwave-Assisted Extraction

Sládková¹,

Benedeková²,

Stopka³

et al. 2016

BioResources

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Closed-system microwave-assisted extraction was applied to extract total phenolics from spruce (Picea abies) bark, using 96.6% ethanol as an extractant. The influence of particle size (0.3; 1.0; 2.5 mm), time (3 to 20 min), and temperature (60; 80; 100 °C) on polyphenol recovery was also studied. Higher extraction temperature and smaller particle size resulted in a higher yield of extracted polyphenols. However, the effect of extraction time on yield was more complicated. The effect of all three factors is tentatively explained.

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“…Cellulase from Aspergillus sp. [152] Kroon and co-workers screened ar ange of NADES derived from mixtures of ChCl or natural amino acids as hydrogen-bond acceptors and natural carboxylic acids as hydrogen bond donors as solvents for biopolymers (lignin, cellulose,a nd starch). [147] Furthermore, ac ellulase was re-engineered by directede volutiont oi mprovei ts stability in mixtures of ChCl/ Gly and concentrated sea water as al ow-costr eactionm edium for enzymatic hydrolysis of cellulose.…”

Section: Pretreatment and Saccharification Of Lignocellulose In Ilsmentioning

confidence: 99%

Biocatalysis and Biomass Conversion in Alternative Reaction Media

Sheldon

2016

Chemistry A European J

154

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In this Minireview, the state of the art in the use of ionic liquids (ILs) and deep eutectic solvents (DESs) as alternative reaction media for biocatalytic processes and biomass conversion is presented. Initial, proof-of-concept studies, more than a decade ago, involved first-generation ILs based on dialkylimidazolium cations and non-coordinating anions, such as tetrafluoroborate and hexafluorophosphate. More recently, emphasis has switched to more environmentally acceptable second-generation ILs comprising cations, which are designed to be compatible with enzymes and, in many cases are derived from readily available, renewable resources, such as cholinium salts. Protic ionic liquids (PILs), prepared simply by mixing inexpensive amines and acids, are particularly attractive from both an environmental and economic viewpoint. DESs, prepared by mixing inexpensive salts with, preferably renewable, hydrogen-bond donors such as glycerol and amino acids, have also proved suitable reaction media for biocatalytic conversions. A broad range of enzymes can be used in ILs, PILs and DESs, for example lipases in biodiesel production. These neoteric solvents are of particular interest, however, as reaction media for biocatalytic conversions of substrates that have limited solubility in common organic solvents, such as carbohydrates, nucleosides, steroids and polysaccharides. This has culminated in the recent focus of attention on their use as (co)solvents in the pretreatment and saccharification of lignocellulose as the initial steps in the conversion of second-generation renewable biomass into biofuels and chemicals. They can similarly be used as reaction media in subsequent conversions of hexoses and pentoses into platform chemicals.

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Deep Eutectic Solvents: Fractionation of Wheat Straw

Cited by 113 publications

References 2 publications

UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

UV/Vis Spectrometry as a Quantification Tool for Lignin Solubilized in Deep Eutectic Solvents

Yield of Polyphenolic Substances Extracted From Spruce (Picea abies) Bark by Microwave-Assisted Extraction

Biocatalysis and Biomass Conversion in Alternative Reaction Media

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