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Table 2 Main types of polysaccharides present in hemicellulose (Alvarez et al. 2016; Zhou et al. 2017; Naidu et al. 2018; Singh et al. 2018)

From: Carbohydrate-binding modules targeting branched polysaccharides: overcoming side-chain recalcitrance in a non-catalytic approach

Type

Backbone

Side chaina

Biological origin

Arabinoxylan

β-1,4-Xyl

É‘-(1,2)/(1,3)-Ara

Herbage

Glucuronoxylan

β-1,4-Xyl

É‘-(1,2)-GlcAOMe

Hardwood

Arabinoglucuronoxylan

β-1,4-Xyl

É‘-(1,2)/(1,3)-Ara and É‘-(1,2)-GlcAOMe

Herbage

Xyloglucan

β-1,4-Glc

É‘-(1,6)-Xyl, É‘-(1,2)-Fuc, É‘-(1,3)-Gal, et al

Extensive

Glucomannan

β-1,4-Man/Glc

Rare

Softwood

Galactoglucomannan

β-1,4-Man/Glc

É‘-(1,6)-Gal

Softwood

  1. aThis column only displays the carbohydrate side chains of hemicellulose