Continuous pretreatment of sugarcane bagasse at high loading in an ionic liquid using a twin-screw extruder

Silva, Ayla Sant’Ana da; Teixeira, Ricardo Sposina Sobral; Endo, Takashi; Bon, Elba P. S.; Lee, Seung Hwan

doi:10.1039/c3gc40352a

Cited by 75 publications

(36 citation statements)

References 51 publications

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“…With regard to high solid loading in the IL-assisted pretreatment step, 15-50% of solid loading has been reported [14,20,[34][35][36]. When these IL-pretreated biomasses are washed and then subjected to subsequent high-solid saccharification, the concentration of the IL carried over into the subsequent enzymatic reaction cannot be neglected because the water content for the saccharification system is low.…”

Section: Saccharification Of Choac-or Emimoa-pretreated Biomass With mentioning

confidence: 97%

Effect of post-pretreatment washing on saccharification and co-fermentation from bagasse pretreated with biocompatible cholinium ionic liquid

Ninomiya

Ogino

Ishizaki

et al. 2015

Biochemical Engineering Journal

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a b s t r a c tCholine acetate (ChOAc), a cholinium ionic liquid (IL), was used for biomass pretreatment; thereafter, saccharification of the pretreated biomass and glucose/xylose co-fermentation were conducted with different number of post-pretreatment washes (1-5 and 10 washes). Besides saccharification and cofermentation data, the inhibitory effect of ChOAc on the biocatalyst was compared with that of 1-ethyl-3-methylimidazolium acetate (EmimOAc). ChOAc showed less inhibitory effect on cellulase and yeast activity compared with EmimOAc. The cellulose and hemicellulose saccharification percentages of the IL-pretreated bagasse were approximately 90% and 60%, respectively, irrespective of ChOAc and EmimOAc with sufficient post-pretreatment washes. The cellulose and hemicellulose saccharification percentages after 5 washes were 82% and 59%, respectively, in the case of ChOAc and 51% and 13%, respectively, in the case of EmimOAc. The overall ethanol yields on the original bagasse basis after saccharification and co-fermentation of the IL-pretreated bagasse when washed 5 times were 54% and 22% in the case of ChOAc and EmimOAc, respectively. ChOAc-pretreated bagasse could be saccharified and co-fermented with fewer washes than EmimOAc-pretreated bagasse.

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Section: Saccharification Of Choac-or Emimoa-pretreated Biomass With mentioning

confidence: 97%

Effect of post-pretreatment washing on saccharification and co-fermentation from bagasse pretreated with biocompatible cholinium ionic liquid

Ninomiya

Ogino

Ishizaki

et al. 2015

Biochemical Engineering Journal

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“…The ␤-glucosidase, xylanase, ␣-l-arabinofuranosidase, and ␤-xylosidase activities were determined as described by Silva, Teixeira, Endo, Bon, and Lee (2013).…”

Section: Enzyme Sources and Activitiesmentioning

confidence: 99%

Combining biomass wet disk milling and endoglucanase/β-glucosidase hydrolysis for the production of cellulose nanocrystals

Teixeira

Silva

Jang

et al. 2015

Carbohydrate Polymers

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Cellulose nanocrystals (CNCs), a biomaterial with high added value, were obtained from pure cellulose, Eucalyptus holocellulose, unbleached Kraft pulp, and sugarcane bagasse, by fibrillating these biomass substrates using wet disk milling (WDM) followed by enzymatic hydrolysis using endoglucanase/β-glucosidase. The hydrolysis experiments were conducted using the commercial enzyme OptimashBG or a blend of Pyrococcus horikoshii endoglucanase and Pyrococcus furiosus β-glucosidase. The fibrillated materials and CNCs were analyzed by X-ray diffraction, atomic force microscopy, scanning electron microscopy, and the specific surface area (SSA) was measured. WDM resulted in the formation of long and twisted microfibers of 1000-5000 nm in length and 4-35 nm in diameter, which were hydrolyzed into shorter and straighter CNCs of 500-1500 nm in length and 4-12 nm in diameter, with high cellulose crystallinity. Therefore, the CNC's aspect ratio was successfully adjusted by endoglucanases under mild reaction conditions, relative to the reported acidic hydrolysis method.

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“…• ILs have also been proved to be highly effective solvents for lignocellulosic materials under solid biomass loadings of as high as 50 % in a continuous pretreatment reactor [32]. Thus, the feasibility of high-throughput continuous pretreatment could enhance the potential for use of IL-based pretreatment as a cost-effective and highly invaluable technology for fabrication of sustainable composite materials from polysaccharide raw materials.…”

Section: A Comparison Of Ils With Conventional Organic Solvents For Pmentioning

confidence: 99%

Green Composites from Ionic Liquid-Assisted Processing of Sustainable Resources: A Brief Overview

Mahmood¹,

Moniruzzaman²,

Yusup³

et al. 2017

Progress and Developments in Ionic Liquids

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The massive use of synthetic, petroleum-based polymeric composites has disturbed the fragile environmental equilibrium of our planet. Composites made solely from polysaccharides can offer unique intrinsic properties such as renewability, biodegradability, easy availability, eco-friendliness, facile processing, flexibility, and exciting physico-mechanical characteristics. The development of green processing of lignocellulosic materials and bio-based polymers such as cellulose, starch, chitin, and chitosan, the most abundant biorenewable materials on earth, is urgent from the perspectives of both environmental protection and sustainability in materials industries. Recently, the enormous potential of ionic liquids (ILs) as an alternative to ecologically harmful conventional organic solvents has been well recognized. Presently, a wide range of pronounced approaches have been explored to further improve the performance of ionic liquid-based processing of polysaccharides for green composite manufacturing. This review presents recent technological developments in which the advantages of ionic liquids as a dissolution medium for polysaccharides for production of plethora of green composites have been gradually realized.

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Continuous pretreatment of sugarcane bagasse at high loading in an ionic liquid using a twin-screw extruder

Cited by 75 publications

References 51 publications

Effect of post-pretreatment washing on saccharification and co-fermentation from bagasse pretreated with biocompatible cholinium ionic liquid

Effect of post-pretreatment washing on saccharification and co-fermentation from bagasse pretreated with biocompatible cholinium ionic liquid

Combining biomass wet disk milling and endoglucanase/β-glucosidase hydrolysis for the production of cellulose nanocrystals

Green Composites from Ionic Liquid-Assisted Processing of Sustainable Resources: A Brief Overview

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