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Moisture sorption isotherms of broad bean seeds at different temperatures
1Higher Institute of Food and Flavour Industries, Department of Process Engineering, 26 Maritza Blvd., BG-4000 Plovdiv, Bulgaria.
Die Nahrung
|February 24, 2001
Abstract:
The equilibrium moisture contents in broad bean seeds were determined using the gravimetric static method at 5, 20, 40 and 60 degrees C over a range of water activities from 0.110 to 0.877. The sorption capacity of seeds decreased with the increase in temperature at constant water activity. Five models, modified Chung-Pfost, modified Halsey, modified Oswin, modified Henderson, and GAB (Guggenheim-Anderson-de Boer) equations, were applied to analyse the experimental data. The modified Oswin and GAB models were found to be the most suitable for describing the sorption isotherms.