An edible oxygen barrier film pouch was fabricated from a heat
sealable corn zein (CZ) layer laminated on SPI film and used to
package olive oil condiments for use with instant noodles (Cho, Lee,
& Rhee, 2010). The oxygen permeability of the CZ/SPI film
(0.81 1018 m3 m/m2 s Pa) was lower than that of nylonmetalocene
catalyzed linear low-density polyethylene (NY/
mLLDPE) film (3.51 1018 m3 m/m2 s Pa) which is the material
usually used for such condiments. Egg white protein (albumen) and
soy protein systems used alone or in combination yield bio-plastics
that can be thermomechanically processed by injection molding,
although showing lower rheological and mechanical properties
than LDPE standards, under the selected processing conditions
(Felix et al., 2014).