naa a22 4500 510726682 CHVBK 20180411082938.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11947-012-0851-4 doi (NATIONALLICENCE)springer-10.1007/s11947-012-0851-4 Biocomposite Films Based on κ-Carrageenan/Locust Bean Gum Blends and Clays: Physical and Antimicrobial Properties [Elektronische Daten] [Joana Martins, Ana Bourbon, Ana Pinheiro, Bartolomeu Souza, Miguel Cerqueira, António Vicente] The aims of this work were to evaluate the physical and antimicrobial properties of biodegradable films composed of mixtures of κ-carrageenan (κ-car) and locust bean gum (LBG) when organically modified clay Cloisite 30B (C30B) was dispersed in the biopolymer matrix. Film-forming solutions were prepared by adding C30B (ranging from 0 to 16wt.%) into the κ-car/LBG solution (40/60wt.%) with 0.3% (w/v) of glycerol. Barrier properties (water vapour permeability, P vapour; CO2 and O2 permeabilities), mechanical properties (tensile strength, TS, and elongation-at-break, EB) and thermal stability of the resulting films were determined and related with the incorporation of C30B. Also, X-ray diffraction (XRD) was done in order to investigate the effect of C30B in film structure. Antimicrobial effects of these films against Listeria monocytogenes, Escherichia coli and Salmonella enterica were also evaluated. The increase of clay concentration causes a decrease of P vapour (from 5.34 × 10−11 to 3.19 × 10−11g (ms Pa)−1) and an increase of the CO2 permeability (from 2.26 × 10−14 to 2.91 × 10−14g (ms Pa)−1) and did not changed significantly the O2 permeability for films with 0 and 16wt.% C30B, respectively. Films with 16wt.% clay exhibited the highest values of TS (33.82MPa) and EB (29.82%). XRD patterns of the films indicated that a degree of exfoliation is attained depending on clay concentration. κ-car/LBG-C30B films exhibited an inhibitory effect only against L. monocytogenes. κ-car/LBG-C30B composite films are a promising alternative to synthetic films in order to improve the shelf life and safety of food products. Springer Science+Business Media, LLC, 2012 Biocomposite films nationallicence Polysaccharide nationallicence Galactomannan nationallicence Clays nationallicence Physical properties nationallicence Martins Joana Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut Bourbon Ana Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut Pinheiro Ana Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut Souza Bartolomeu Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut Cerqueira Miguel Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut Vicente António Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut Food and Bioprocess Technology Springer US; http://www.springer-ny.com 6/8(2013-08-01), 2081-2092 1935-5130 6:8<2081 2013 6 11947 https://doi.org/10.1007/s11947-012-0851-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11947-012-0851-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Martins Joana Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut NATIONALLICENCE 700 1- Bourbon Ana Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut NATIONALLICENCE 700 1- Pinheiro Ana Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut NATIONALLICENCE 700 1- Souza Bartolomeu Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut NATIONALLICENCE 700 1- Cerqueira Miguel Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut NATIONALLICENCE 700 1- Vicente António Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal aut NATIONALLICENCE 773 0- Food and Bioprocess Technology Springer US; http://www.springer-ny.com 6/8(2013-08-01), 2081-2092 1935-5130 6:8<2081 2013 6 11947 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer