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The impact of zinc oxide particle morphology as an antimicrobial and when incorporated in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) films for food packaging and food contact surfaces applications
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0001-5867-0531
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymeric Materials.
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2017 (English)In: Food and Bioproducts Processing, ISSN 0960-3085, E-ISSN 1744-3571, Vol. 101, 32-44 p.Article in journal (Refereed) Published
Abstract [en]

In this work, zinc oxide (ZnO) micron and nano sized-particles with different morphologies were synthesized by aqueous precipitation and evaluated as antimicrobial agents against foodborne pathogens. The most effective bactericide system was selected to prepare active poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) films by three different methods (i) direct melt-mixing, (ii) melt-mixing of preincorporated ZnO into PHBV18 (18 mol% valerate content) fiber mats made by electrospinning, and, (iii) as a coating of the annealed electrospun PHBV18/ZnO fiber mats over compression molded PHBV. Results showed that ZnO successfully improved the thermal stability of the PHBV18, being the preincorporation method the most efficient in mitigating the negative impact that the PHBV18 had on the thermal stability, barrier and optical properties of the PHBV films. Similar behavior was found for the coating structure although this film showed effective and prolonged antibacterial activity against Listeria monocytogenes. This study highlights the suitability of the PHBV/ZnO nanostructures for active food packaging and food contact surface applications.

Place, publisher, year, edition, pages
Institution of Chemical Engineers, 2017. Vol. 101, 32-44 p.
Keyword [en]
Active Packaging, Antimicrobial activity, Electrospinning, Food contact surfaces, PHBV, ZnO, Antimicrobial agents, Coatings, Microorganisms, Mixing, Optical properties, Packaging machines, Particle size, Pathogens, Precipitation (chemical), Spinning (fibers), Thermodynamic stability, Zinc, Zinc oxide, Anti-bacterial activity, Anti-microbial activity, Aqueous precipitation, Food contact, Listeria monocytogenes, Poly(3-hydroxybutyrate-co-3-hydroxyvalerate), Oxide films
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-202831DOI: 10.1016/j.fbp.2016.10.007ISI: 000393720400004Scopus ID: 2-s2.0-84995579579OAI: oai:DiVA.org:kth-202831DiVA: diva2:1083024
Note

QC 20170320

Available from: 2017-03-20 Created: 2017-03-20 Last updated: 2017-03-20Bibliographically approved

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