Biomass Recalcitrance

최준원,; 정한섭,; 곽기섭,; 최인규,; 김호용,; 여환명,

doi:10.1002/9781444305418

Cited by 83 publications

(3 citation statements)

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“…This coating of the fibrils may influence cellulose fibril bundling and interaction, perhaps preventing cellulose fibril co-crystallisation (aggregation). Pulp and paper manufacture, biofuel processing, and digestion of feed all involve removal of xylan from cellulose, and so discovery of plants in which xylan is not bound to cellulose may facilitate aspects of these processes27,33,34 . This improved understanding of secondary cell wall architecture suggests novel strategies for preparation and application of biomaterials from plant cell walls.Plant growth and cell wall preparationPlants were Arabidopsis thaliana Columbia-0 ecotype.…”

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confidence: 99%

An even pattern of xylan substitution is critical for interaction with cellulose in plant cell walls

et al. 2017

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Xylan and cellulose are abundant polysaccharides in vascular plants and essential for secondary cell wall strength. Acetate or glucuronic acid decorations are exclusively found on even-numbered residues in most of the glucuronoxylan polymer. It has been proposed that this even-specific positioning of the decorations might permit docking of xylan onto the hydrophilic face of a cellulose microfibril . Consequently, xylan adopts a flattened ribbon-like twofold screw conformation when bound to cellulose in the cell wall . Here we show that ESKIMO1/XOAT1/TBL29, a xylan-specific O-acetyltransferase, is necessary for generation of the even pattern of acetyl esters on xylan in Arabidopsis. The reduced acetylation in the esk1 mutant deregulates the position-specific activity of the xylan glucuronosyltransferase GUX1, and so the even pattern of glucuronic acid on the xylan is lost. Solid-state NMR of intact cell walls shows that, without the even-patterned xylan decorations, xylan does not interact normally with cellulose fibrils. We conclude that the even pattern of xylan substitutions seen across vascular plants enables the interaction of xylan with hydrophilic faces of cellulose fibrils, and is essential for development of normal plant secondary cell walls.

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An even pattern of xylan substitution is critical for interaction with cellulose in plant cell walls

et al. 2017

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“…Although its composition of barley grain husk, pericarp and fragments of endosperm is contingent upon the barley type, harvest time and mashing conditions [26], carbohydrates comprise of around half of the dry mass of BSG, with the balance mostly being proteins and lignin. Challenges associated with using BSG as a feedstock includes the existence of a complex outer layer, making it difficult to separate and convert, and a high moisture content (80% -85%), making it susceptible to microbial growth and spoilage within a 7 -10 day period [6]. The moisture issue can be stabilized post production in the brewing process, deterioration of the feedstock through microbial activity can further reduce yields in the conversion process [27].…”

Section: Brewer's Spent Grains As a Lignocellulosic Feedstockmentioning

confidence: 99%

“…The technical development of SOMs has been well researched in chemistry and biochemistry, but not in the fields of supply chain and economics, which are essential to its market utilization. The technical challenges associated with harvesting sugars and other useful compounds from lignocellulose is well known, being the access to these sugars being hindered by the recalcitrance of plant cell walls [6]. Even if technical hurdles are overcome to enable this feedstock to be competitive with conventional materials, challenges remain relative to the acquisition, transportation/logistics, and product fulfillment of lignocellulose.…”

Section: Introductionmentioning

confidence: 99%

The Economic Potential of Brewer’s Spent Grain (BSG) as a Biomass Feedstock

Buffington¹

2014

ACES

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This paper analyzes a pro-forma economic market and supply chain system for the reuse of a lignocellulose (brewer's spent grain) in an industrial biotechnology environment. An extant literature review was conducted, followed by a technical analysis of BSG, and the development of a supply chain system and economic market analysis based upon a participant brewing company and industry experts. In this paper, it was found that, even with the potential for future improvements in the conversion of brewer's spent grain (BSG) from an efficiency standpoint, this industrial residual is supply chain prohibitive as a biofeedstock in comparison to other lignocellulose materials, therefore, centralized market relationships would not be advantageous for sellers and buyers. Future research should consider the viability of centralized supply chain structures for alternatives that may exist as future bio-feedstocks.

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Xylooligosaccharides Production, Quantification, and Characterization in Context of Lignocellulosic Biomass Pretreatment

Qing

Kumar

et al. 2013

Aqueous Pretreatment of Plant Biomass for Biological and Chemical Conversion to Fuels and Chemicals

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Biomass Recalcitrance

Cited by 83 publications

References 0 publications

An even pattern of xylan substitution is critical for interaction with cellulose in plant cell walls

An even pattern of xylan substitution is critical for interaction with cellulose in plant cell walls

The Economic Potential of Brewer’s Spent Grain (BSG) as a Biomass Feedstock

Xylooligosaccharides Production, Quantification, and Characterization in Context of Lignocellulosic Biomass Pretreatment

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