Structural and physical effects of aroma compound binding to native starch granules

Anders Dysted Jørgensen, Susanne L. Jensen, Gregory Ziegler, Anuranjan Pandeya, Alain Buléon, Birte Svensson, Andreas Blennow

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    Abstract

    The interaction and physical/structural effects of aroma compounds, at high concentrations on dry native starch granules were studied using eight selected model compounds: acetaldehyde, dimethyl sulphide, diacetyl, allyl isothiocyanate, ethyl butyrate, citral, octanol and butyric acid. The maize, potato and pea starches used represent different typical structural and chemical starch characteristics. Retention of the different aroma compounds varied from a few to one hundred percent and starch was found to induce as well as reduce aroma evaporation depending on the aroma compound and the starch type. As deduced from DSC, powder XRD and SEM analyses, citral, butyric acid and octanol exerted specific effects on the starch granules manifested in local melting of crystalline layers and partial disruption of the granular meso structure. The most prominent effect was obtained with citral that generated surface wrinkles on B‐ and C‐type polymorphic granules and aggregation of A‐type polymorphic granules, decreased the melting temperature and suppressed the crystallinity of the starch.
    Original languageEnglish
    JournalStarch
    Volume64
    Issue number6
    Pages (from-to)461-469
    ISSN0038-9056
    DOIs
    Publication statusPublished - 2012

    Cite this

    Jørgensen, A. D., Jensen, S. L., Ziegler, G., Pandeya, A., Buléon, A., Svensson, B., & Blennow, A. (2012). Structural and physical effects of aroma compound binding to native starch granules. Starch, 64(6), 461-469. https://doi.org/10.1002/star.201100131