In order to determine appropriate isothermal moisture absorption models for different tobacco samples, 14 kinds of moisture sorption isotherms widely used in food research, including 8 theoretical models: BET model, GAB model, Kühn model Smith model1(non-swellable material), Smith model 2(swellable material), Harkins model, Hailwood model, and Lewicki model, as well as 6 empirical/semi-empirical models: Peleg model, Ferro Fontan model, DLP model, Konstance model, Oswin model and Polynomial model, were selec...