Antimicrobial and Physical–Mechanical Properties of Polyhydroxybutyrate Edible Films Containing Essential Oil Mixtures

Antimicrobial and Physical–Mechanical Properties of Polyhydroxybutyrate Edible Films Containing Essential Oil Mixtures

In this study, three different combinations of essential oils (EO) of cinnamon, melaleuca and citronella were incorporated in polyhydroxybutyrate (PHB) films by conventional solution-casting method for food packaging applications. Although melaleuca and citronella EO films have been not demonstrated...

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Bibliographic Details
Published in:Journal of polymers and the environment Vol. 29; no. 4; pp. 1202 - 1211
Main Authors: Rech, Chaiane R., Brabes, Kelly C. S., Silva, Bárbara E. B., Martines, Marco A. U., Silveira, Tayla F. S., Alberton, Josué, Amadeu, Carolina A. A., Caon, Thiago, Arruda, Eduardo J., Martelli, Silvia M.
Format: Journal Article
Language:English
Published: New York Springer US 01-04-2021
Springer Nature B.V
Subjects:
Addition polymerization
Antiinfectives and antibacterials
Antimicrobial activity
Antimicrobial agents
Biodegradability
Biodegradation
Chemistry
Chemistry and Materials Science
Elongation
Environmental Chemistry
Environmental Engineering/Biotechnology
Essential oils
Food packaging
Industrial Chemistry/Chemical Engineering
Materials Science
Mechanical properties
Melt temperature
Microorganisms
Modulus of elasticity
Original Paper
Polyhydroxybutyrate
Polyhydroxybutyric acid
Polymer films
Polymer Sciences
Polymers
Thermal stability
Mechanical properties
Antimicrobial activity
Thermal analysis
Polyhydroxybutyrate
Essential oils
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Summary:In this study, three different combinations of essential oils (EO) of cinnamon, melaleuca and citronella were incorporated in polyhydroxybutyrate (PHB) films by conventional solution-casting method for food packaging applications. Although melaleuca and citronella EO films have been not demonstrated antimicrobial activity, they presented low UV transmission and high thermal stability. Films containing citronella and cinnamon EO or melaleuca and cinnamon EO, in turn, were active against all tested microorganisms and showed greater flexibility than pure PHB films. Aspergillus niger was the most sensitive microorganism to EO-based polymer films. Overall, the addition of EOs improved the thermal stability of films and reduced the polymer melting temperature as the result of its plasticization, affecting the elastic modulus and elongation at break of films. Taken together, these results suggest that EO-loaded PHB films could be used in designing of biodegradable active packaging for food products.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-020-01943-0