Food and Bioprocess Technology

, Volume 10, Issue 4, pp 770–780 | Cite as

Functional Properties of Plasticized Bio-Based Poly(Lactic Acid)_Poly(Hydroxybutyrate) (PLA_PHB) Films for Active Food Packaging

  • Nuria Burgos
  • Ilaria Armentano
  • Elena Fortunati
  • Franco Dominici
  • Francesca Luzi
  • Stefano Fiori
  • Francesco Cristofaro
  • Livia Visai
  • Alfonso Jiménez
  • José M. Kenny
Original Paper

Abstract

Fully bio-based and biodegradable active films based on poly(lactic acid) (PLA) blended with poly(3-hydroxybutyrate) (PHB) and incorporating lactic acid oligomers (OLA) as plasticizers and carvacrol as active agent were extruded and fully characterized in their functional properties for antimicrobial active packaging. PLA_PHB films showed good barrier to water vapor, while the resistance to oxygen diffusion decreased with the addition of OLA and carvacrol. Their overall migration in aqueous food simulant was determined and no significant changes were observed by the addition of carvacrol and OLA to the PLA_PHB formulations. However, the effect of both additives in fatty food simulant can be considered a positive feature for the potential protection of foodstuff with high fat content. Moreover, the antioxidant and antimicrobial activities of the proposed formulations increased by the presence of carvacrol, with enhanced activity against Staphylococcus aureus if compared to Escherichia coli at short and long incubation times. These results underlined the specific antimicrobial properties of these bio-films suggesting their applicability in active food packaging.

Keywords

Bio-films Active packaging Lactic acid oligomers Carvacrol Migration Antibacterial properties 

Notes

Acknowledgements

This work was funded by the SAMSUNG GRO PROGRAMME 2012 and the Spanish Ministry of Economy and Competitiveness (Ref. MAT2014-59242-C2-2-R and MAT2014-55778-REDT).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Nuria Burgos
    • 1
  • Ilaria Armentano
    • 2
  • Elena Fortunati
    • 3
  • Franco Dominici
    • 3
  • Francesca Luzi
    • 3
  • Stefano Fiori
    • 4
  • Francesco Cristofaro
    • 5
    • 6
  • Livia Visai
    • 5
    • 6
  • Alfonso Jiménez
    • 1
  • José M. Kenny
    • 3
  1. 1.Department of Analytical Chemistry, Nutrition and Food SciencesUniversity of AlicanteSan Vicente del RaspeigSpain
  2. 2.Department of Ecological and Biological Sciences (DEB)Tuscia UniversityViterboItaly
  3. 3.Civil and Environmental Engineering Department, UdR INSTMUniversity of PerugiaTerniItaly
  4. 4.Condensia QuímicaBarcelonaSpain
  5. 5.Molecular Medicine Department (DMM), Center for Health Technologies (CHT), UdR INSTMUniversity of PaviaPaviaItaly
  6. 6.Department of Occupational Medicine, Toxicology and Environmental Risks, Instituti Clinici Scientifici Maugeri S.p.A, IRCCSPaviaItaly

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