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Antimicrobial Membranes of Bio-Based PA 11 and HNTs Filled with Lysozyme Obtained by an Electrospinning Process

Bio-based membranes were obtained using Polyamide 11 (PA11) from renewable sources

and a nano-hybrid composed of halloysite nanotubes (HNTs) filled with lysozyme (50 wt % of

lysozyme), as a natural antimicrobial molecule. Composites were prepared using an electrospinning

process, varying the nano-hybrid loading (i.e., 1.0, 2.5, 5.0 wt %). The morphology of the membranes

was investigated through SEM analysis and there was found to be a narrow average fiber diameter

(0.3–0.5  m). The mechanical properties were analyzed and correlated to the nano-hybrid content.

Controlled release of lysozyme was followed using UV spectrophotometry and the release kinetics

were found to be dependent on HNTs–lysozyme loading. The experimental results were analyzed by

a modified Gallagher–Corrigan model. The application of the produced membranes, as bio-based

pads, for extending the shelf life of chicken slices has been tested and evaluated.

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