Analyzing the data presented in Table 2, it can be observed that
an increase in the amount of gelatin (4:1–1:1) has increased the
WVP in most
films based on corn starch and GEL, plasticized with
GLY. Al-Hassan and Norziah (2012) suggest that the glycerol
presents a greater plasticization effect than sorbitol when used at
the same mass content in
films based on protein, polysaccharides
and protein–polysaccharides (Al-Hassan and Norziah, 2012).