Preparation and Characterization of an Olive Flounder (Paralichthys olivaceus) Skin Gelatin and Polylactic Acid Bilayer Film.
Olive flounder skin gelatin (OSG) was used as a film base material. A bilayer film of OSG and polylactic acid (PLA) was prepared using solvent casting method to enhance the film properties. Physical properties of the OSG-PLA film were increased compared with the nonaugmented OSG film. In particular, the PLA lamination decreased water vapor permeability from 2.17 to 0.92 × 10-9g·m/m2·s·Pa, as well as of the water solubility from 16.62% to 9.27%, in the bilayer film relative to the OSG film. The oxygen permeability of the OSG-PLA bilayer film was held low by the OSG film, compensating for the high oxygen permeability of the PLA layer. Therefore, the OSG-PLA bilayer film with its enhanced physical properties and high water and oxygen barrier properties can be applied as a food packaging material.
Dept. of Food Science and Technology, Chungnam Natl. Univ., Daejeon, 34134, Republic of Korea.
Ka-Yeon
KY
Lee
Dept. of Food Science and Technology, Chungnam Natl. Univ., Daejeon, 34134, Republic of Korea.
Kyung Bin
KB
Song
D000818:Animals; D063566:Biodegradable Plastics / Q000737:chemistry*; D005432:Flounder; D018857:Food Packaging / Q000379:methods*; D005780:Gelatin / Q000737:chemistry*; D006801:Humans; D031658:Olea; D010100:Oxygen; D010539:Permeability; D011091:Polyesters / Q000737:chemistry*; D012867:Skin / Q000737:chemistry; D012995:Solubility; D013227:Steam; D014867:Water
D063566:Biodegradable Plastics; D011091:Polyesters; D013227:Steam; D014867:Water; C033616:poly(lactide); D005780:Gelatin; D010100:Oxygen
film; fish; gelatin; packaging; physical properties