Production of Xylooligosaccharides from Forest Waste by Membrane Separation and Paenibacillus Xylanase Hydrolysis

Ko, Chun-Han; Shih, Tzenge‐Lien; Jhan, Bi-Ting; Chang, Feng-Cheng; Wang, Ya-Nang; Wang, Yi‐Chung

doi:10.15376/biores.8.1.612-627

Cited by 10 publications

(14 citation statements)

References 27 publications

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“…In this case, the size-dependent selection mechanism of the membrane process results in the various concentrations of molecules with different molecular weights. Membrane separations have been applied for the preparation of several XOS from various biomasses, such as Olive stones, Pinus pinaster wood, and forest waste [ 37 – 39 ].…”

Section: Resultsmentioning

confidence: 99%

Synergetic effect of dilute acid and alkali treatments on fractional application of rice straw

Sun

Chen

Tang

et al. 2016

Biotechnol Biofuels

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BackgroundThe biorefinery based on an effective and economical process is to fractionate the three primary constituents (cellulose, hemicelluloses, and lignin) from lignocellulosic biomass, in which the constituents can be respectively converted into high-value-added products. In this study, a successive treatment with dilute acid (0.25–1.0 % aqueous H2SO4, 100–150 °C, 0.5–3.0 h) and alkali (1.5 % aqueous NaOH, 80 °C, 3 h) was performed to produce xylooligosaccharides (XOS), high-purity lignin, and cellulose-rich substrates to produce glucose for ethanol production from rice straw (RS).ResultsDuring the dilute acid pretreatment, the maximum production of XOS (12.8 g XOS/100 g RS) with a relatively low level of byproducts was achieved at a relatively low temperature (130 °C) and a low H2SO4 concentration (0.5 %) for a reaction time of 2.0 h. During the alkali post-treatment, 14.2 g lignin with a higher purity of 99.2 % and 30.3 g glucose with a higher conversion rate by enzymatic hydrolysis were obtained from the successively treated substrates with 100 g RS as starting material. As the pretreatment temperature, H2SO4 concentration, or time increased, more β-O-4 linkages in lignins were cleaved, which resulted in an increase of phenolic OH groups in lignin macromolecules. The signal intensities of G2 and G6 in HSQC spectra gradually reduced and vanished, indicating that a condensation reaction probably occurred at C-2 and C-6 of guaiacyl with the side chains of other lignin.ConclusionsThe present study demonstrated that the successive treatments with dilute acid and alkali had a synergetic effect on the fractionation of the three main constituents in RS. It is believed that the results obtained will enhance the availability of the combined techniques in the lignocellulosic biorefinery for the application of the main components, cellulose, hemicelluloses, and lignin as biochemical and biofuels.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-016-0632-9) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Synergetic effect of dilute acid and alkali treatments on fractional application of rice straw

Sun

Chen

Tang

et al. 2016

Biotechnol Biofuels

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“…The XOs produced from garlic straw hemicelluloses hydrolyzed with xylanase secreted by B. mojavensis were composed of xylobiose, xylotriose, and xylotetrose, together with a small amount of xylopentaose and xylohexose yielding 29 ± 1.74% after 8 h [122]. Xylan extracted of Mikania micrantha was hydrolyzed by a recombinant Paenibacillus xylanase, yielding 68% of XOs [123]. Oil palm empty fruit bunch fiber was hydrolyzed by…”

Section: Xylanasesmentioning

confidence: 99%

Microbial Glycosidases for Nondigestible Oligosaccharides Production

Bezerra¹,

Montibra

Hansen

et al. 2017

Enzyme Inhibitors and Activators

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There is much interest in the study and production of nondigestible oligosaccharides (NDOs), due to their bioactivities and beneficial effects to the human health. The main approach in the production of NDOs relies on the action of glycosidases performing hydrolysis or transglycosylation of polysaccharides and sugars. In this chapter, a description of the main microbial glycosidases used for NDOs production, their sources, their principal properties, and a description of the production processes with the better results obtained are discussed.

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“…Liu et al (2011a) used ethanol to precipitate hemicelluloses from PHL in high-yield pulp, in which one liter of prehydrolysis liquor (PHL) was mixed with four liters of ethanol at room temperature. Ko et al (2013) studied the purification of XOs by the methods of nanofiltration and ultrafiltration. Ahsan et al (2014) used a combination of activated carbon adsorption, nanofiltration (NF), and reverse osmosis (RO) to treat PHL from kraft-based hardwood dissolving pulp process.…”

Section: Purification Of Xylooligosaccharides In Phlmentioning

confidence: 99%

The Potential of Pre-Hydrolysis Liquor from the Dissolving Pulp Process as Recovery Source of Xylooligosaccharide - A Mini-Review

2016

BioResources

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Production of Xylooligosaccharides from Forest Waste by Membrane Separation and Paenibacillus Xylanase Hydrolysis

Cited by 10 publications

References 27 publications

Synergetic effect of dilute acid and alkali treatments on fractional application of rice straw

Synergetic effect of dilute acid and alkali treatments on fractional application of rice straw

Microbial Glycosidases for Nondigestible Oligosaccharides Production

The Potential of Pre-Hydrolysis Liquor from the Dissolving Pulp Process as Recovery Source of Xylooligosaccharide - A Mini-Review

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