Active food packaging film with nisin chitosan/PLLA

Researchers at the Hefei University of Technology in China prepared nisin-loaded chitosan/poly (L-lactic acid) (nisin-CS/PLLA) antimicrobial films. The structure and mechanical properties of the films were investigated, and the antibacterial behavior was assessed.
When CS/PLLA ratio was at 1:1 (w/w) and above, a notable enhancement was observed in the tensile strength with the increase of PLLA content. From diffusion and antimicrobial activity results, the films revealed well-controlled release and better antimicrobial activity against S. aureus, which may have potential as a novel active food packaging film. An article about the research is published in Food and Bioprocess Technology.
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