Among the natural biopolymers, starch stands out because of its
low price and availability. However, starch films present poor
mechanical properties, such as fragility and excessive rigidity (Galdeano
et al., 2009b; Müller et al., 2009). The addition of plasticizers
reduces the stiffness of the films and increases the permeability to
water vapor (Bangyekan et al., 2006; Galdeano et al., 2009b; Müller