Fractional extraction and structural characterization of sugarcane bagasse hemicelluloses

Sun, Jifeng; Sun, Xiaofang; Sun, Run‐Cang; Su, Youlu

doi:10.1016/j.carbpol.2004.02.002

Cited by 307 publications

(220 citation statements)

References 26 publications

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“…In general, each ton of sugarcane produces 280 kg bagasse. Sugar cane bagasse contains 40% to 50% cellulose (crystalline and amorphous structure), 25% to 35% hemicellulose (amorphous polymers usually composed of xylose, arabinose, galactose, glucose and mannose), 15% to 20% of lignin and the remainder lesser amounts of mineral, wax, and other compounds [9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Carboxymethyl Cellulose from Sugarcane Bagasse

Asl¹,

Mousavi²,

Labbafi³

2017

J Food Process Technol

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Various raw materials including plant biomass, bacteria, algae and the Tunicates (marine animals) have been used to produce cellulose. However, agricultural waste has rarely been utilized for this purpose. In this work, Sugarcane bagasse was used as raw material to produce cellulose. Cellulose was extracted from sugarcane bagasse through the elimination of lignin and hemicellulose. Cellulose was then converted to carboxymethyl cellulose (CMC b ) by using sodium monochloroacet (SMCA) and various sodium hydroxide (NaOH) concentrations. Fourier Transform Infrared Spectroscopy (FTIR) was applied to verify the effect of NaOH concentration on this property. The highest viscosity and degree of substitution (DS=0.78) were observed in 30 gr/100 ml NaOH of carboxymethylation. Maximum tensile strength of the films produced at these conditions was 37.34 Mpa. The addition of a various amount of glycerol (1 ml/ 100 ml, 2 ml/ 100 ml, 3 ml/ 100 ml) dramatically decreased the tensile strength. The highest level of water vapor permeability was also observed at the same NaOH concentration. Cellulose can be correctly extracted from sugarcane bagasse and converted to carboxymethyl cellulose. Based on the cellulose of the bagasse characteristic, proper amount of NaOH was found to get a high DS. CMC b has considerable features for application on biodegradable coating materials.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Carboxymethyl Cellulose from Sugarcane Bagasse

Asl¹,

Mousavi²,

Labbafi³

2017

J Food Process Technol

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“…Two shoulders at 968 and 1031 cm -1 are characteristic of arabinose substitution at C-3 of the xylose residues, indicating a characteristic typical of substituted arabinoxylans (Xu et al 2006b). A sharp and intensive band at 1066 cm -1 is indicative of the C-O-C stretching that is typical for xylans (Sun et al 2004). Each spectrum presents a peak at 1412 cm -1 that is indicative of the CH2 bending and one at 1312 cm -1 representing O-H bending.…”

Section: Characterizationmentioning

confidence: 98%

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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“…Currently, alkaline extraction, alkaline peroxide extraction, liquid hot water extraction, and steam explosionbased extraction technologies are widely used to isolate hemicelluloses from lignocelluloses . Hemicelluloses from most agricultural residues, such as wheat straw, sugarcane bagasse, and rice straw, have been extracted for the purpose of structural characterization (Lawther et al 1995;Sun et al 2004Sun et al , 1996. After the initial separation, the hemicelluloses obtained are subjected to further fractionation such as successive solvent precipitation (e.g., aqueous ethanol and aqueous ammonium sulfate), chromatograph separation (e.g., ion-exchange and gel-permeation), and membrane separation (e.g., ultrafiltration and nanofiltration) (Ebringerova 2012;Egues et al 2012;Schlesinger et al 2006).…”

Section: Graded Ethanol Fractionation and Structural Characterizationmentioning

confidence: 99%

Graded Ethanol Fractionation and Structural Characterization of Alkali-Extractable Hemicelluloses from Olea europaea L.

Peng¹,

Bian²,

Li³

et al. 2013

BioResources

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Dewaxed Olea europaea L. was subjected to delignification followed by alkali extraction with 10% KOH containing 1% H 3 BO 3 . The released hemicelluloses were fractionated by precipitation through acidification and ethanol solutions with increasing concentrations from 20 to 30, 40, 50, 60, 70, and 90%. The structure of the subfractions obtained was comparatively characterized by sugar analysis, molecular weight, FT-IR, and NMR spectroscopy. Results indicated that 23.5% of hemicelluloses (% of the dewaxed material) were isolated by the alkaline extraction. An increase of ethanol concentration resulted in the precipitation of the more branched hemicelluloses as indicated by the increase of the ratios of arabinose to xylose and uronic acids to xylose. The hemicellulose subfractions Ha (precipitated by acidification to pH 5.5) and H30 (precipitated by 30% ethanol solution) had a similar structure, which was assumed to be glucuroxylan together with a small amount of α-glucan, whereas the hemicellulose subfraction H70 (precipitated by 70% ethanol solution) had a more complicated structure, which was mainly composed of a (1→4)-linked β-D-xylopyranosyl backbone with various side chains. The comprehensive structural characterization of the hemicelluloses of this species provides fundamental information for their potential applications in the fields of materials, chemicals, and energy production.

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Fractional extraction and structural characterization of sugarcane bagasse hemicelluloses

Cited by 307 publications

References 26 publications

Synthesis and Characterization of Carboxymethyl Cellulose from Sugarcane Bagasse

Synthesis and Characterization of Carboxymethyl Cellulose from Sugarcane Bagasse

Fractional Isolation and Structural Characterization of Hemicelluloses from Soybean Hull

Graded Ethanol Fractionation and Structural Characterization of Alkali-Extractable Hemicelluloses from Olea europaea L.

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