Fig. 3A shows some typical stress vs. strain curves obtained from tensile tests conducted on the reference system andWG/GL/polysaccharide/water bioplastic probes prepared at pH 6and containing 1.5 wt% polysaccharide. Stress curves exhibit a lin-ear elastic region with a marked increase in strength at low strainvalues, characterised by high values of the Young’s Modulus (E).This zone is followed by an extensive plastic region showing adecrease in the stress–strain slope towards a constant value. Even-tually, the rupture of samples takes place once a maximum stress(max) and strain (εmax) are reached. As seen in Fig. 3A, bioplasticswith polysaccharides exhibit higher values of stress for an appliedstrain, as well as improved elongation at break, if compared to the probe without polysaccharide.