Functionalized Polymeric Materials with Bio-Derived Antimicrobial Peptides for "Active" Packaging.

Abstract:

:Food packaging is not only a simple protective barrier, but a real "active" component, which is expected to preserve food quality, safety and shelf-life. Therefore, the materials used for packaging production should show peculiar features and properties. Specifically, antimicrobial packaging has recently gained great attention with respect to both social and economic impacts. In this paper, the results obtained by using a polymer material functionalized by a small synthetic peptide as "active" packaging are reported. The surface of Polyethylene Terephthalate (PET), one of the most commonly used plastic materials in food packaging, was plasma-activated and covalently bio-conjugated to a bactenecin-derivative peptide named 1018K6, previously characterized in terms of antimicrobial and antibiofilm activities. The immobilization of the peptide occurred at a high yield and no release was observed under different environmental conditions. Moreover, preliminary data clearly demonstrated that the "active" packaging was able to significantly reduce the total bacterial count together with yeast and mold spoilage in food-dairy products. Finally, the functionalized-PET polymer showed stronger efficiency in inhibiting biofilm growth, using a Listeria monocytogenes strain isolated from food products. The use of these "active" materials would greatly decrease the risk of pathogen development and increase the shelf-life in the food industry, showing a real potential against a panel of microorganisms upon exposure to fresh and stored products, high chemical stability and re-use possibility.

journal_name

Int J Mol Sci

authors

Agrillo B,Balestrieri M,Gogliettino M,Palmieri G,Moretta R,Proroga YTR,Rea I,Cornacchia A,Capuano F,Smaldone G,De Stefano L

doi

10.3390/ijms20030601

subject

Has Abstract

pub_date

2019-01-30 00:00:00

issue

3

issn

1422-0067

pii

ijms20030601

journal_volume

20

pub_type

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