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Research article2020Peer reviewedOpen access

Bio-based films from wheat bran feruloylated arabinoxylan: Effect of extraction technique, acetylation and feruloylation

Yilmaz-Turan, Secil; Jimenez-Quero, Amparo; Menzel, Carolin; Carvalho, Danila Morais de; Lindstrom, Mikael E.; Sevastyanova, Olena; Moriana, Rosana; Vilaplana, Francisco

Abstract

This study demonstrates the potential of feruloylated arabinoxylan (AX) from wheat bran for the preparation of bioactive barrier films with antioxidant properties. We have comprehensively evaluated the influence of the structural features and chemical acetylation of feruloylated AX extracted by subcritical water on their film properties, in comparison with alkaline extracted AX and a reference wheat endosperm AX. The degree of substitution (DS) of AX had a large influence on film formation, higher DS yielded better thermal and mechanical properties. The barrier properties of AX films were significantly enhanced by external plasticization by sorbitol. Chemical acetylation significantly improved the thermal stability but not the mechanical or barrier properties of the films. The presence of bound ferulic acid in feruloylated AX films resulted in higher antioxidant activity compared to external addition of free ferulic acid, which demonstrates their potential use in active packaging applications for the preservation of oxygen-sensitive foodstuff.

Keywords

Arabinoxylan; Wheat bran; Subcritical water extraction; Ferulic acid; Acetylation; Barrier properties; Antioxidant activity

Published in

Carbohydrate Polymers
2020, Volume: 250, article number: 116916Publisher: ELSEVIER SCI LTD

      SLU Authors

    • Moriana, Rosana

    UKÄ Subject classification

    Polymer Chemistry

    Publication identifier

    DOI: https://doi.org/10.1016/j.carbpol.2020.116916

    Permanent link to this page (URI)

    https://res.slu.se/id/publ/108632