Journal
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
Volume 167, Issue 2, Pages 229-235Publisher
ELSEVIER
DOI: 10.1016/j.ijfoodmicro.2013.09.009
Keywords
Poly(lactic acid); Sawdust particle; Biocomposite film; Pediocin; Anti-listeria; Packaging
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Funding
- Thailand Research Fund through the Royal Golden Jubilee Ph.D. Program [PHD/0227/2551]
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A novel poly(lactic add) (PLA)/sawdust particle (SP) biocomposite film with anti-listeria activity was developed by incorporation of pediocin PA-1/AcH (Ped) using diffusion coating method. Sawdust particle played an important role in embedding pediocin into the hydrophobic PLA film. The anti-listeria activity of the PLA/SP biocomposite film incorporated with Ped (PLA/SP + Ped) was detected, while no activity against the tested pathogen was observed for the control PLA films (without SP and/or Ped). Dry-heat treatment of film before coating with Ped resulted in the highest Ped adsorption (11.63 +/- 3.07 mu g protein/cm(2)) and the highest anti-listeria activity. A model study of PIA/SP + Ped as a food-contact antimicrobial packaging on raw sliced pork suggests a potential inhibition of Listeria monocytogenes (99% of total listerial population) on raw sliced pork during the chilled storage. This study supports the feasibility of using PLA/SP + Ped film to reduce the initial load of L. monocytogenes on the surface of raw pork. (C) 2013 Elsevier B.V. All rights reserved.
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