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Gas Permeability and Permselectivity of Poly(L-Lactic Acid)/SiOx Film and Its Application in Equilibrium-Modified Atmosphere Packaging for Chilled Meat.

Authors
  • Dong, Tungalag1
  • Song, Shuxin1
  • Liang, Min1
  • Wang, Yu1
  • Qi, Xiaojing1
  • Zhang, Yuqin1
  • Yun, Xueyan1
  • Jin, Ye1
  • 1 College of Food Science and Engineering, Inner Mongolia Agricultural Univ, 306 Zhaowuda Road, Hohhot, Inner Mongolia, 010018, China. , (China)
Type
Published Article
Journal
Journal of Food Science
Publisher
Wiley (Blackwell Publishing)
Publication Date
Jan 01, 2017
Volume
82
Issue
1
Pages
97–107
Identifiers
DOI: 10.1111/1750-3841.13560
PMID: 27886655
Source
Medline
Keywords
License
Unknown

Abstract

A layer of SiOx was deposited on the surface of poly(L-lactic acid) (PLLA) film to fabricate a PLLA/SiOx layered film, by plasma-enhanced chemical vapor deposition (PECVD) process. PLLA/SiOx film showed Young's modulus and tensile strength increased by 119.2% and 91.6%, respectively, over those of neat PLLA film. At 5 °C, the oxygen (O2 ) and carbon dioxide (CO2 ) permeability of PLLA/SiOx film decreased by 78.7% and 71.7%, respectively, and the CO2 /O2 permselectivity increased by 32.5%, compared to that of the neat PLLA film. When the PLLA/SiOx film was applied to the equilibrium-modified atmosphere packaging of chilled meat, the gas composition in packaging reached a dynamic equilibrium with 6% to 11% CO2 and 8% to 13% O2 . Combined with tea polyphenol pads, which effectively inhibited the microbial growth, the desirable color of meat was maintained and an extended shelf life of 52 d was achieved for the chilled meat.

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