Moisture Sorption Isotherms of Tobacco Seeds at Three Temperatures

✍ Scribed by N.D. Menkov; K.T. Dinkov

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 127 KB
• Volume: 74
• Category: Article
• ISSN: 0021-8634
• DOI: 10.1006/jaer.1999.0459

✦ Synopsis

The equilibrium moisture contents were determined for seeds of four tobacco varieties using gravimetric static method at 15, 25 and 403C over a range of relative humidities from 0)112 to 0)856. The sorption capacity of all the varieties investigated, decreased with an increase in temperature at constant relative humidity. Each variety had a statistically signi"cant e!ect on the sorption characteristics. Five models were applied for analysing the experimental data using the following equations: modi"ed Chung}Pfost; modi"ed Halsey; modi"ed Oswin; modi"ed Henderson and GAB (Guggenheim}Anderson}de Boer). The GAB model was found to be the most suitable for describing the relationship among equilibrium moisture content, relative humidity and temperature.