**8. Comparison between edible films and synthetic film**

**Table 2** shows the comparison of WVP of edible film with synthetic packaging (PP, LDPE, etc.). Puncture strength of trilayered edible film from sodium alginate emulsion, gelatin emulsion and whey protein isolates emulsion (SAOGOWPIO) is seven times higher than that of synthetic packaging, and also edible film has more resistance to oxygen permeability than PS and PET [216]. **Table 3** shows the mechanical properties of different types of synthetic as well as edible packagings, from that we can say that in case of some mechanical properties, edible film is deprived than synthetic packaging, but it was acceptable [216].


#### **Table 2.**

*Comparison of mechanical properties of edible film with synthetic packaging.*



#### **Table 3.**

*Water vapour permeability of edible film vs synthetic film.*
