Abstract

Vinasse (pisco distillation waste) is a promising feedstock for developing new high value-added bioproducts because it is supporting sustainable production as an agroindustrial by-product. The aims of this study were to evaluate experimental drying curves (60 degrees C and 80 degrees C); mathematical modeling of films and the effect of the drying conditions on quality properties of vinasse films plasticized with glycerol at different pH. The results indicated that as the drying temperature increased, the moisture ratio decreased for all films. The Weibull model obtained the best-fit quality of experimental results. The effective moisture diffusivity varied between 2.234 and 2.513 x 10(-11) m(2)/s. The optimal conditions were found at 80 degrees C and pH 11 for films. Under these conditions, the films presented a higher tensile strength (26.54 MPa), lower elongation at break (6.82%), and a higher Young ' s Modulus (385.32 MPa). Thus, vinasse films could be used as packaging or coating materials in the food industry.