Deep eutectic solvents for polysaccharides processing. A review

Zdanowicz, Magdalena; Wilpiszewska, Katarzyna; Spychaj, Tadeusz

doi:10.1016/j.carbpol.2018.07.078

Cited by 300 publications

(189 citation statements)

References 171 publications

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“…DESs have been used as solvents for polysaccharide modification and processing and as catalytic media . To our knowledge, the only work that has reported the production furfural in DES media used a DES composed of cholinium chloride ([Ch]Cl) and oxalic acid, but still required a Lewis acid as catalyst, that is, AlCl 3 ⋅6 H 2 O .…”

Section: Introductionmentioning

confidence: 70%

“…[27] DESs have been used as solvents for polysaccharide modification and processing [28] and as catalytic media. [29,30] To our knowledge,t he only work that has reported the production furfurali nD ES media used aD ES composed of cholinium chloride ([Ch]Cl) and oxalic acid, but still required aL ewis acid as catalyst, that is, AlCl 3 ·6 H 2 O. [31] The authors used ab iphasic system using methyl isobutyl ketone within ac ontinuous process, leading to af urfural yield of 55.5 %f rom xylans at 100 8C.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Morais

Freire

et al. 2020

ChemSusChem

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An efficient process for the production of furfural from xylan by using acidic deep eutectic solvents (DESs), which act both as solvents and catalysts, is developed. DESs composed of cholinium chloride ([Ch]Cl) and malic acid or glycolic acid at different molar ratios, and the effects of water and γ‐valerolactone (GVL) contents, solid/liquid (S/L) ratio, and microwave heating are investigated. The best furfural yields are obtained with the DES [Ch]Cl:malic acid (1:3 molar ratio)+5 wt % water, under microwave heating for 2.5 min at 150 °C, a S/L ratio of 0.050, and GVL at a weight ratio of 2:1. Under these conditions, a remarkable furfural yield (75 %) is obtained. Direct distillation of furfural from the DES/GVL solvent and distillation from 2‐methyltetrahydrofuran (2‐MeTHF) after a back‐extraction step enable 89 % furfural recovery from 2‐MeTHF. This strategy allows recycling of the DES/GVL for at least three times with only small losses in furfural yield (>69 %). This is the fastest and highest‐yielding process reported for furfural production using bio‐based DESs as solvents and catalysts, paving the way for scale‐up of the process.

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Section: Introductionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Morais

Freire

et al. 2020

ChemSusChem

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“…Lignocellulose biomass (LIB) is an organic material obtained from a biological source, mostly plants. Examples include agricultural residues such as sugar cane bagasse, corn stover, cereal straw, and forest woody residue (e.g., birch, spruce, eucalyptus) as well as industrial residues such as whey, molasses, brewers spent grain, food waste, and municipal solid waste , . These are the most abundant global sources of renewable materials and their annual global production has been estimated to be 10 10 MT.…”

Section: Lignocellulose As Starting Materials For La Productionmentioning

confidence: 99%

“…-Recombinant LAB strains that can grow on LIB without the need for complex nutritional requirements -Significant reduction in LA production costs by eliminating the need for a pretreatment and enzyme hydrolysis reaction -Uncovering mechanism of cellulase secretion by the native cellulolytic microorganisms and the way they synergize to breakdown cellulose to glucose. -More investigation on cellulose active proteins such as lytic polysaccharide monooxygenases (LPMOs) -Further studies on genetic engineering tools for unlabeled gene integration into LAB genomic DNA such as homologous recombination and single-stranded DNA recombineering [28,29] Microwave-assisted DES pretreatment of LIB -High delignification rate on LIB -Producing pretreatment products with little or no harmful by-products -Reduce pretreatment costs -Investigating this new pretreatment method in LA production [14] CSSF with enzyme and cell recycling -Reduces enzyme costs by recycling -Eliminates feedback, substrate and end product inhibition together with separation problems -Produces higher LA productivity, yield and concentration compared to batch and fed-batch fermentations. -Reduces LA production cost -Investigating this process configuration in LA production [10,38] Figure 11.…”

Section: Rcb In Labmentioning

confidence: 99%

Lactic Acid Production from Lignocellulose – A Review of Major Challenges and Selected Solutions

et al. 2020

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The industrial application of lactic acid is very broad; hence, the high demand is forecasted to multiply in the future. This review presented the major problems for the efficient production of lactic acid from lignocellulose biomass using lactic acid bacteria (LAB) and further proposes three promising solutions to solve these problems, exposing their potentials and future research needs. Recombinant cellulolytic strategy in LAB promises a significant reduction of lactic acid production costs, however, extensive research on genetic engineering is still needed. Microwave‐assisted deep eutectic solvent pretreatment is extremely fast and produces little to no harmful by‐products, but it has not been investigated for lactic acid production yet. Continuous simultaneous saccharification and fermentation with enzyme and cell recycle is newly proposed by the authors as a process set up that can solve the problems of feedback‐, substrate‐ and end‐product inhibition while resulting in higher lactic acid productivities, yield, and concentration.

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“…It leads to increased chain movements and a more flexible material with lower glass transition temperature ( T g ) as a result. The most used plasticizer for starch plasticization via hot melting methods is glycerol, but other polyols, amines, amides, sugars, or their mixtures with other plasticizers as well as ionic liquids or deep eutectic solvents (DES) can be also applied.…”

Section: Introductionmentioning

confidence: 99%

Low Transition Temperature Mixtures (LTTM) Containing Sugars as Potato Starch Plasticizers

2019

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For the first time, low transition temperature mixtures – LTTM based on sugars: fructose (Fruc), glucose (Gluc) or sucrose (Suc), and glycerol (G) are prepared, characterized by DSC and applied as potato starch plasticizers. Sugar‐based LTTM exhibits good plasticizing activity leading to homogenous transparent, flexible thermoplastic starch (TPS) materials. Mechanical, dynamic mechanical (DMA), X‐ray diffractometry (XRD), and FTIR analysis of obtained TPS/LTTM films are performed for their relative comparison. For TPS/Fruc:G films, tensile strength (TS) and Young's modulus (YM) decreases and elongation at break (EB) increases with increase of G. However, for TPS/Gluc:G molar ratio of Gluc to G did not affect significantly on films mechanical properties. Comparing two monosugars, i.e., Gluc and Fruc, TPS/Gluc:G materials exhibit slightly higher TS (4.8–5.8 MPa) but lower EB (44–61%) in comparison with TPS/Fruc:G films (TS 3.2–5.0 MPa; EB 90–115%) at 25 °C, RH 50%. LTTM as whole mixture of components led to TPS products with not only higher TS, YM but even EB in comparison with films where sugars and G were added separately into starch. Mutual interaction between sugar, polyol and starch is confirmed by DMA. XRD reveals that starch with LTTM undergone amorphization and TPS/Suc:G 1:6 is the most amorphous among investigated TPS films.

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Deep eutectic solvents for polysaccharides processing. A review

Cited by 300 publications

References 171 publications

Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Lactic Acid Production from Lignocellulose – A Review of Major Challenges and Selected Solutions

Low Transition Temperature Mixtures (LTTM) Containing Sugars as Potato Starch Plasticizers

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