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    Effect of kafirin-based films incorporating citral and quercetin on storage of fresh chicken fillets

    Access Status
    Fulltext not available
    Authors
    Giteru, S.
    Oey, I.
    Ali, M.
    Johnson, Stuart
    Fang, Z.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Giteru, S. and Oey, I. and Ali, M. and Johnson, S. and Fang, Z. 2017. Effect of kafirin-based films incorporating citral and quercetin on storage of fresh chicken fillets. Food Control. 80: pp. 37-44.
    Source Title
    Food Control
    DOI
    10.1016/j.foodcont.2017.04.029
    ISSN
    0956-7135
    School
    School of Public Health
    URI
    http://hdl.handle.net/20.500.11937/53155
    Collection
    • Curtin Research Publications
    Abstract

    This study investigated mechanical and bioactive properties of kafirin films consisting of 2.5% citral (CK), 2% quercetin (QK) or 1.25% citral + 1% quercetin (CQK). Incorporation of citral reduced the maximum stress (smax) and stiffness, accompanied by an increase in the strain at break (eb), and yield stress (sy) of the films. Compared to the plain kafirin films (PK) and QK, citral–containing films showed significant antimicrobial activity (p < 0.05) against the total viable count on chicken fillets stored at 2 ± 0.5 °C for 96 h. The final thiobarbituric acid reactive substances (TBARS) were lower for PK, CQK, and QK (0.18, 0.16 and 0.23 mg MDA/kg respectively), compared to unwrapped fillets and CK (0.41 and 0.59 mg MDA/kg respectively). These findings implied that quercetin and those polyphenolics likely co-extracted with kafirin possessed the ability to inhibit the development of lipid oxidative products. CIE L*a*b* colour values showed pronounced yellowness (b*) of wrapped samples. This colouration was attributed to the sorghum phytochemical co-extracted with the kafirin, and the intrinsic colour of citral, and quercetin. Kafirin edible films incorporating citral and quercetin demonstrated potential as a packaging material to improve food safety and quality of the chicken.

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