Moisture sorption isotherms of millet seeds
N.D. Menkov, D.I. Gelyazkovhttps://doi.org/10.17221/8316-CJFSCitation:Menkov N.D., Gelyazkov D.I. (2000): Moisture sorption isotherms of millet seeds. Czech J. Food Sci., 18: 86-90.
The equilibrium moisture contents were determined for millet seeds of two cultivars using the gravimetric static method at 10, 25 and 40°C over a range of relative humidities from 0.112 to 0.868. The sorption capacity of the seeds decreased with an increase in temperature at constant relative humidity. The hysteresis effect is not distinctly expressed but statistically significant. The differences between equilibrium moisture contents of the cultivars are small. Four models were applied for analyzing the experimental data using the following equations: modified Chung-Pfost, modified Halsey, modified Oswin, and modified Henderson. The modified Chung-Pfost model was found to be the most suitable for describing the relationship between equilibrium moisture content, relative humidity and temperature.Keywords:
millet; equilibrium; sorption; model