Structure of a Hemicellulose A Fraction in Dietary Fiber from the Seed of Grape Variety Palomino (Vitis vinifera cv. Palomino)

Igartuburu, José M.; Pando, E.; Rodríguez-Luis, Francisco; Gil‐Serrano, Antonio

doi:10.1021/np9702401

Cited by 9 publications

(1 citation statement)

References 25 publications

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“…1 In previous reports, we have described the isolation and structural determination of an acidic xyloglucan from the so-called fraction A of the grape skin hemicelluloses 2 and two other hemicelluloses from the seeds of Palomino grapes. 3,4 This paper describes the structural determination of a polysaccharide isolated from the hemicellulose B fraction of dietary fiber from the grape skin under study.…”

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A Hemicellulose B Fraction from Grape Skin (Vitis vinifera, Palomino Variety)

et al. 2001

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The structure of a hemicellulose B fraction (B-1) isolated from grape skins (Vitis vinifera) of the Palomino variety has been studied by methylation analysis, (1)H NMR and (13)C NMR spectroscopy, and partial acid hydrolysis. Hemicellulose B-1 appeared to be homogeneous by gel filtration with a weight-average molecular weight of 22 600. This polysaccharide is a linear xyloglucan chain composed of xylopyranosyl and glucopyranosyl residues linked by beta-(1-->4) glycosidic bonds. Attached to this backbone, 4-O-methyl-D-glucuronopyranosyl acid, D-glucopyranosyl, and L-fucopyranosyl residues occur at position 2 in a ratio of one residue for every five units of xylose in the main chain, with D-xylopyranosyl residues attached at position 6 of glucose units in a ratio of one residue for every two glucose-derived moieties in the main chain.

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A Hemicellulose B Fraction from Grape Skin (Vitis vinifera, Palomino Variety)

et al. 2001

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A Critical Review on Hemicellulose Pyrolysis

et al. 2016

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Fast pyrolysis is a promising thermochemical technology that breaks down renewable and abundant lignocellulosic biomass into a primary liquid product (bio‐oil) in seconds. The bio‐oil can then be potentially catalytically upgraded into transportation fuels and multiple commodity chemicals. Hemicellulose is one of the three major components of lignocellulosic biomass and is characterized as a group of cell wall polysaccharides that are neither cellulose nor pectin. The composition and structural features of hemicellulose (mixture of different heterogeneous polysaccharides) and different specific hemicellulose polysaccharides are reviewed. Particular focus is then given to reviewing the status of hemicellulose pyrolysis in terms of experimental investigations, reaction mechanisms, and kinetic modeling. For each aspect, recent results, challenges, and future prospects are addressed.

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