Characterisation of degraded organosolv hemicelluloses from wheat straw

Xu, Feng; Liu, Chuanfu; Geng, Z. C.; Sun, Jifeng; Sun, Run‐Cang; Hei, B.H.; Lin, Lu; Wu, Shubin; Je, Jae‐Young

doi:10.1016/j.polymdegradstab.2005.11.002

Cited by 89 publications

(41 citation statements)

References 29 publications

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“…Figure 3 shows the XRD profiles, and the effect of the treatment on CrI of the wheat straw is given in Table 2. It can be seen that the 35) 1038, 1061 C-O stretching of polysaccharides or polysaccharide substances 36) 1163 C-O-C anti-symmetric 37) 1253 Aromatic C-O stretching out of lignin 38) 1373 CH 2 vibrations of cellulose 38) 1432 CH 2 vibrations of cellulose 39) 1516 Aromatic C=C stretching from aromatic ring of lignin 35) 1653 Bending of absorbed residual water 35) 1733 C=O stretching of unconjugated ketone and carboxyl groups 35) Ã Natural wheat straw, water treated, 0.5%, 1%, 1.5%, and 2% NaOH pretreated wheat straw. Fig.…”

Section: Crystallinity and Cellulose Recoverymentioning

confidence: 99%

Alkali Pretreatment of Wheat Straw (Triticum aestivum) at Boiling Temperature for Producing a Bioethanol Precursor

Barman

Haque

Kang

et al. 2012

Bioscience, Biotechnology, and Biochemistry

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Section: Crystallinity and Cellulose Recoverymentioning

confidence: 99%

Alkali Pretreatment of Wheat Straw (Triticum aestivum) at Boiling Temperature for Producing a Bioethanol Precursor

Barman

Haque

Kang

et al. 2012

Bioscience, Biotechnology, and Biochemistry

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“…below 100 ºC) is not able to break the cross-links between the WUAXs and the wall matrix (Izydorczyk & Biliaderis, 2007). In order to improve the AXs extraction yield from different biomass, several techniques, such as hydrothermal treatments (Bobleter, 1994;Buranov & Mazza, 2010;Carvalheiro, Garrote, Parajó, Pereira, & Gírio, 2005;Dien et al, 2006;Garrote, Domínguez, & Parajó, 1999;Garrote, Domínguez, & Parajó, 2001;Garrote, Domínguez, & Parajó, 2002;Kim, Hendrickson, Mosier, & Ladisch, 2009;Lavarack, Griffin, & Rodman, 2000;Li, Converse, & Wyman, 2003;Maes & Delcour, 2002;Mok & Antal, 1992;Nabarlatz, Farriol, & Montané, 2004;Negahdar, Delidovich, & Palkovits, 2016;Reisinger et al, 2013;Shen & Wyman, 2011;Tekin et al, 2014), chemical-solvent extractions (Adams et al, 1955;Aguedo, Fougnies, Dermience, & Richel, 2014;Bataillon, Mathaly, Nunes Cardinali, & Duchiron, 1998;Buranov & Mazza, 2010;Choteborská et al, 2004;Doner, Chau, Fishman, & Hicks, 1998;Höije, Gröndahl, TØmmeraas, & Gatenholm, 2005;Hollmann & Lindhauer, 2005;Kim, Kreke, & Ladisch, 2013;Kusema et al, 2011;Lavarack, Griffin, & Rodman, 2002;Maes & Delcour, 2002;Shen & Wyman, 2011;Swennen, Courtin, Lindemans, & Delcour, 2006;Xu et al, 2006;Yao, Nie, Yuan, Wang, & Qin, 2015;…”

Section: Introductionmentioning

confidence: 99%

Extraction of arabinoxylans from wheat bran using hydrothermal processes assisted by heterogeneous catalysts

Sanchez‐Bastardo

Romero

Alonso

2017

Carbohydrate Polymers

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The extraction/hydrolysis process of arabinoxylans from destarched wheat bran was studied in this work using different mesoporous silica supports and the corresponding RuCl3-based catalysts. The effects of temperature, time, catalyst supports and ruthenium catalysts were investigated and discussed in terms of the arabinoxylans extraction yield and their polymerization degree. Relatively high temperatures (180 ºC), short extraction times (10 minutes) and RuCl3 supported on Al-MCM-48 led to a high amount of arabinoxylans extracted (78%) with a low molecular weight (9 KDa). Finally, a relation between the operating conditions, the arabinoxylans extraction yield and the molecular weight was stablished based on the obtained results. Abbreviation: AXs, arabinoxylans; DWB, destarched wheat branKeywords: Hemicelluloses fractionation, wheat bran, arabinoxylans, heterogeneous catalysis, hydrothermal process, biomass Chemical compounds studied in this articleXylose (PubChem CID: 135191); Arabinose (PubChem CID: 439195) Highlights:-Effects of ruthenium catalyst, temperature, time and catalyst support are discussed -RuCl3-based catalysts show good activity for the arabinoxylans extraction from wheat bran -Liquid extracts are characterized in terms of sugars, molecular weight and purity

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“…In the plant kingdom, xylans are the most abundant hemicellulosetype polysaccharide constituents (Xu et al 2008). It is difficult to liberate xylan components from grasses, cereal straws, and woods, primarily because of the linkage of ester and ester lignin-hemicelluloses (Xu et al 2006a). Therefore, the first step to isolate hemicelluloses from lignocelluloses is to remove lignin with sodium chlorite in acetic acid solutions; alternatively, the residual lignin can be removed from isolated hemicelluloses (Sun et al 1998(Sun et al , 2000.…”

Section: Introductionmentioning

confidence: 99%

Fractional Isolation and Structural Characterization of Hemicelluloses from Soybean Hull

Wang¹,

Li²,

Liu³

et al. 2015

BioResources

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Hemicellulosic fractions were extracted from soybean hull with various concentrations of NaOH at 50 °C for 5 h. The chemical compositions and physicochemical properties were determined by high performance anion exchange chromatography (HPAEC), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analyzer (TGA), and 13 C and 2D nuclear magnetic resonance (NMR) analysis. The crystallinity of soybean hulls treated and untreated by alkali liquid was examined by X-ray diffraction (XRD). The sugar analysis results indicated that all of the hemicellulosic preparations were heteropolysaccharides containing arabinose, galactose, glucose, xylose, and mannose. According to the spectral analysis, hemicelluloses from soybean hull were assumed to be L-arabino-4-O-methyl-D-glucurono-D-xylan. Xylose was the predominant monosaccharide in the hemicellulose fraction 1 (H1), and it ranged between 40.1% and 48.8% of the total neutral sugars. It was found that hemicellulose fraction 3 (H3) had the highest thermal stability and H1 had the lowest thermal stability. The crystallinity index (CrI) was found to be about 20.8%, 14.3%, 10.9%, and 4.7% for soybean hulls, untreated and treated with 1.5, 2.0, and 2.5 M NaOH, respectively.

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Characterisation of degraded organosolv hemicelluloses from wheat straw

Cited by 89 publications

References 29 publications

Alkali Pretreatment of Wheat Straw (Triticum aestivum) at Boiling Temperature for Producing a Bioethanol Precursor

Alkali Pretreatment of Wheat Straw (Triticum aestivum) at Boiling Temperature for Producing a Bioethanol Precursor

Extraction of arabinoxylans from wheat bran using hydrothermal processes assisted by heterogeneous catalysts

Fractional Isolation and Structural Characterization of Hemicelluloses from Soybean Hull

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