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TitleAntimicrobial properties of chitosan and galactomannan composite coatings and physical properties of films made thereof
Author(s)Almeida, L. B. S.
Figueiredo, E. A. T.
Dias, F. G. B.
Santos, F. M. S.
Fernandes, Bruno D
Vicente, A. A.
Cerqueira, M. A.
Silva, A. L. C.
Vale, D. A.
Souza, B. W. S.
Food Packaging
Biodegradable Films
Active Packaging
Biodegradable films, Active packaging
Issue dateJun-2021
JournalFuture Foods
CitationAlmeida, L. B. S.; Figueiredo, E. A. T.; Dias, F. G. B.; Santos, F. M. S.; Fernandes, Bruno D.; Vicente, António A.; Cerqueira, M. A.; Silva, A. L. C.; Vale, D. A.; Souza, B. W. S., Antimicrobial properties of chitosan and galactomannan composite coatings and physical properties of films made thereof. Future Foods, 3(100028), 2021
Abstract(s)The aim of this study was to produce antimicrobial coatings and films based on the mixture of chitosan and galactomannan from Adenanthera pavonina L., with the incorporation of sodium acetate. The antimicrobial activity of the coatings was evaluated against L. monocytogenes, S. aureus, P. aeruginosa and S. enteritidis. Then the films produced, based on the coating formulations, were characterized in terms of water vapour permeability (WVP), oxygen (O2) and carbon dioxide (CO2) permeability, moisture content (MC), water solubility (S), tensile strength (TS), elongation at break (EB), elastic modulus (EM), opacity and color. The composite coatings with Chi were effective against Gram-negative and Gram-positive bacteria. Films Chi presented the low water solubility and high values of component b*, which indicates the predominance of yellowish coloration and the highest TS values. Films of Chi-Gal-NaA present lower values of S, MC, WVP and EB and is the film presenting the higher value of EM. While for the films of Gal-NaA there was a reduction of the O2 permeability and an increase of CO2 permeability. Chi in combination with NaA can be used in the development of antimicrobial coatings and films for food applications, therefore contributing to food preservation and shelf-life extension.
Publisher version
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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