"GAB" generalised equation as a basis for sorption spectral analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41310%2F10%3A19520" target="_blank" >RIV/60460709:41310/10:19520 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
"GAB" generalised equation as a basis for sorption spectral analysis
Original language description
The transformed sorption isotherm (represented by the ratio of water activity and moisture content (d.b.) versus water activity) was approximated by polynomials of 2nd-6th order. It is shown that the relative derivative of the transformed equation expresses the deviation of the sorption isotherm from a linear relationship between moisture content and water activity either to a sorption isotherm of the Lagmuir's type (the positive relative derivative) or to a sorption isotherm of the solution type (the negative relative derivative). The relative derivative plotted versus water activity serves then as a spectral indicator of the prevailing sorption mechanism. Spectral analysis is applied to sorption isotherms of potato and wheat starches and some fruitsand vegetables. For starches, the differences in the spectral indicator between resorption and desorption as well as the effect of starch processing (gelatinization and hydrolysis) on spectral analysis are discussed. The role of spectral
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GM - Food industry
OECD FORD branch
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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