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 language | English |
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Qualification | Doctor of Philosophy |
Awarding Institution | |
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Award date | 14 Oct 1981 |
Place of Publication | Wageningen |
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DOIs | |
Publication status | Published - 14 Oct 1981 |
Keywords
- starch
- water
- sorption isotherms