Active Packaging—Poly(Vinyl Alcohol) Films Enriched with Tomato By-Products Extract

Active films were prepared from poly(vinyl alcohol) (PVA) blended with itaconic acid (Ia), and with chitosan (Ch), enriched with tomato processing by-products extract (TBE) in order to develop new bioactive formulations for food packaging. The effects of two biopolymers (Ch, Ia) and of the incorpora...

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Bibliographic Details
Published in:Coatings (Basel) 2020-02, Vol.10 (2), p.141
Main Authors: Szabo, Katalin, Teleky, Bernadette-Emoke, Mitrea, Laura, Călinoiu, Lavinia-Florina, Martău, Gheorghe-Adrian, Simon, Elemer, Varvara, Rodica-Anita, Vodnar, Dan Cristian
Format: Article
Language:English
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Summary:Active films were prepared from poly(vinyl alcohol) (PVA) blended with itaconic acid (Ia), and with chitosan (Ch), enriched with tomato processing by-products extract (TBE) in order to develop new bioactive formulations for food packaging. The effects of two biopolymers (Ch, Ia) and of the incorporated TBE—containing phenolic compounds and carotenoids—were studied regarding the physical and antimicrobial properties of films; in addition, their influence on the total phenolic content, viscosity, and flow behavior on the film-forming solutions was investigated. The results showed increased physical properties (diameter, thickness, density, weight) of the films containing the TBE versus their control. TBE and Ch conferred significant antimicrobial effects to PVA films toward all the tested microorganisms, whereas the best inhibition was registered against S. aureus and P. aeruginosa, with a minimum inhibitory concentration of
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings10020141