Abstract
Momordica charantia polysaccharide (MCP) has been repeatedly reported due to its anti-diabetic properties. Up to our knowledge, no research has discussed the use of MCP as a nanofiber matrix in an active food packaging. As an antibacterial and anti-oxidant agent, phlorotannin (PT) was encapsulated in MCP nanofibers to promote these activities. Nanofiber membranes were treated with cold plasma to increase their application performance. Antioxidant and antibacterial activities of PT and MCP against Escherichia coli O157:H7 were individually evaluated. The prepared nanofibers were assessed for their physical and mechanical properties in order to select the better-characterized ones. The successfulness of PT loading into MCP nanofibers was confirmed using SEM, AFM, TGA and DSC. After cold plasma treatment, the release efficiency of PT from the nanofibers was enhanced by 23.5 % (4 °C) and 25 % (25 °C), respectively. Correspondingly, both antibacterial and anti-oxidant activities of PT/MCP nanofibers were markedly improved.
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