New Poly(lactic acid) Active Packaging Composite Films Incorporated with Fungal Melanin

• DOI: 10.3390/polym10040386
• Publication Date: 2018-04-02T16:32:20Z
• Authors: Łukasz Łopusiewicz; Filip Jędra; Małgorzata Miziel...
• Keywords: Active packaging; Thermal Stability

In this work, fungal melanin was used for the first time to prepare poly(lactic acid)-based composites. The films of various concentrations (0.025%, 0.05% and 0.2% w/w) were prepared using an extrusion method. mechanical, antioxidant, antimicrobial, water vapor UV-Vis barrier properties, as well available polyphenolics on surface, studied. FT-IR Raman spectroscopy studies carried out analyze chemical composition resulting films. hydrophobicity, color response, thermal, optical opacity values also determined. results study show that addition acid) (PLA) a modifier influenced mechanical properties depending concentration. low concentration, enhanced modified films, but in larger amounts, decreased. PLA/melanin composites marginally improved. Differential Scanning Calorimetry (DSC) analysis indicated crystallinity PLA increased by melanin, did not affect thermal stability Modified showed good antioxidant activity active against Enterococcus faecalis, Pseudomonas aeruginosa putida. caused changes values, decreasing lightness increasing redness yellowness Based study, has potential be exploited value-added can improve overall PLA.