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Updated: Aug 6, 2026

Elucidating β-1,3-Glucanase and Peroxidase Physicochemical Properties of Wheat Cell Wall Defense Mechanism Against Diuraphis noxia Infestation
Published on: July 26, 2024
Effects of cell wall components on the functionality of wheat gluten
1VTT, Tietotie 2, P.O. Box 1000, 02044 VTT, Finland. karin.autio@vtt.fi <karin.autio@vtt.fi>
Abstract:
Normal white wheat flours and especially whole meal flour contain solids from the inner endosperm cell walls, from germ, aleurone layer and the outer layers of cereal grains. These solids can prevent either gluten formation or gas cell structure. The addition of small amounts of pericarp layers (1-2%) to wheat flour had a marked detrimental effect on loaf volume. Microstructural studies indicated that in particular the epicarp hairs appeared to disturb the gas cell structure. The detrimental effects of insoluble cell walls can be prevented by using endoxylanases. It has been shown that some oxidative enzymes, naturally present in flour or added to the dough, will oxidise water-extractable arabinoxylans via ferulic acid bridges, and the resulting arabinoxylan gel will hinder gluten formation. The negative effects of water-unextractable arabinoxylans on gluten yield and rheological properties can be compensated by the addition of ferulic acid. Free ferulic acid can probably prevent arabinoxylan cross-linking via ferulic acid.
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