Vapour sorption equilibria and other water-starch interactions : a physico-chemical approach

C. van den Berg

    Research output: Thesisinternal PhD, WU

    Abstract

    <p/>A model was developed on the basis of the literature for binding of water on solid starch by means of a combined sorption mechanism. Equations based on the theory of localized sorption on homogeneous surfaces (Langmuir and Brunauer, Emmett & Teller) were derived. An equation with three parameters from the theories of Guggenheim, Anderson and de Boer described experimental isotherms adequately up to a water activity of 0.9 and one based on polymersolvent interaction (Flory and Huggins) above that value. The experimental isotherms of water vapour on native starch were affected by temperature, gelatinization, partial hydrolysis and separation in components (amylose and amylopectin).<p/>
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    Supervisors/Advisors
    • Lyklema, J., Promotor, External person
    Award date14 Oct 1981
    Place of PublicationWageningen
    Publisher
    Publication statusPublished - 1981

    Keywords

    • starch
    • water
    • sorption isotherms

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