|
|
vol. 7, nr. 1 (2006)
|
Verification of potential theory of adsorption in determining food sorption isotherms
|
|
|
Aneta Ocieczek
|
|
| (get PDF )
|
|
|
Department of Hotel and Turism Management, Gdynia Maritime Academy, ul. Morska 83, 81-225 Gdynia |
|
|
vol. 7 (2006), nr. 1,
pp. 161-170
|
|
|
abstract:
The aim of the thesis is the evaluation of possibilities of application of the Polanyi adsorption potential theory for calculation of food sorption isotherms. The test material were instant type soup concentrates and fragmented pasta. Applying the static-desiccator method, the tested material sorption isotherms were defined, at temperatures of 20C and 30C. Next, on the basis of the isotherms empirically defined at the temperature of 20C, the isotherms at 30C were calculated using the potential theory of adsorption (PTA). The evaluation of the efficiency of PTA was made by comparison of the location of the empirically defined and theoretically calculated sorption isotherms for 30C. The results received showed that the complexity of the composition and of the structure of food constitutes a serious limitation to the PTA efficiency. PTA may be applied in calculation of isotherms of sorption of food with homogeneous composition and ordered, stable structure.
|
|
keywords:
potential adsorption theory, food concentrates, evaluation of efficiency
|
|
original in:
Polish
|
|
|
|
|
|
