期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 68, 期 -, 页码 28-32出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2014.04.011
关键词
Chemical modification; Fatty acid ester of pectin; Antimicrobial activity; Oxygen scavenging function; Active packaging systems
Several pectin derivatives were prepared by chemical modifications of the polysaccharide with natural fatty acids. The obtained biodegradable pectin-based materials, pectin-linoleate, pectin-oleate and pectin-palmitate, were investigated for their antimicrobial activity against several bacterial strains, Staphylococcus aureus and Escherichia coli. Good results were obtained for pectin-oleate and pectin-linoleate, which inhibit the growth of the selected microorganisms by 50-70%. They exert the better antimicrobial activity against S. aureus. Subsequently, the pectin-oleate and the pectin-linoleate samples were coated on polyethylene films and were assessed for their capacity to capture the oxygen molecules, reducing its penetration into the polymeric support. These results confirmed a possible application of the new materials in the field of active food packaging. (C) 2014 Elsevier B.V. All rights reserved.
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