Empirical modeling of moisture sorption characteristics and mechanical and barrier properties of cassava flour film and their relation to plasticizing-antiplasticizing effects

► Constants of Peleg model enabled to calculate moisture content beyond regression data range. ► GAB model was found to be the best estimator for moisture sorption isotherm. ► WVTR and OTR of cassava flour film were reduced with increasing sorbitol content. ► As RH increased, the modulus of elasticity of sorbitol-plasticized film linearly decreased. ► Elongation of sorbitol-plasticized film exponentially increased with increasing RH.