Effects of lamellar organization and arabinoxylan substitution rate on the properties of films simulating wheat grain aleurone cell wall. (15th October 2021)

• Record Type: Journal Article
• Authors: Gao, Xiaoquan; Ying, Ruifeng; Huang, Meigui
• Is Part Of: Carbohydrate polymers. Volume 270(2021)
• Publication Date: 2021-10-15
• Subjects: AX arabinoxylan -- BG (1→3) (1→4)-β-D-glucan -- TAX total arabinoxylan -- WEAX water-extractable arabinoxylan -- WUAX water-unextractable arabinoxylan -- TS tensile strength -- EAB elongation at break -- G′ storage modulus -- G″ loss modulus -- Tg glass transition temperature -- NMR nuclear magnetic resonance -- A/X arabinose-to-xylose ratio -- LAX low substitution rate arabinoxylan -- MAX medium substitution rate arabinoxylan -- HAX high substitution rate arabinoxylan -- LAX/BG low substitution rate arabinoxylan mixed with (1→3) (1→4)-β-D-glucan -- MAX/BG medium substitution rate arabinoxylan mixed with (1→3) (1→4)-β-D-glucan -- HAX/BG high substitution rate arabinoxylan mixed with (1→3) (1→4)-β-D-glucan; Arabinoxylan -- β-Glucan -- Multilayer film -- Mechanical property -- Wheat cell wall -- Water mobility; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2021.117819
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Arabinoxylan (AX) and β-D-glucan (BG) alternate multilayer films were prepared. We evaluated the properties of alternate AX/BG multilayer films. There were differences in the AX content and A/X ratio at different growth stages. The LAX/BG multilayer films showed excellent mechanical property at high RH. We provide insights for studies on physicochemical properties of wheat cell wall. Abstract: Herein, we evaluated the properties of alternate arabinoxylan (AX)/(1→3) (1→4)-β-D-glucan (BG) multilayer films. AX was extracted from wheat at three growth stages and single-component and alternate overlapping multilayer films were prepared. The physical properties, water diffusion rate, and water mobility of multilayer films during water absorption and desorption were studied. There were significant differences in the AX content and arabinose-to-xylose ratio at different growth stages. The LAX/BG multilayer films showed excellent thermal stability and mechanical properties with an increase in the relative humidity. The AX multilayer films with a low substitution rate showed a better water-binding capacity, whereas water molecules in films with a high substitution rate showed higher mobility. Therefore, a low substitution rate AX and AX/BG composite structure can improve the thermodynamic properties of multilayer films, but limit water mobility. We provide new insights on the physicochemical properties and water-regulation effects of wheat cell wall.