Natural Dyes Used as Organic Coatings UV Protecting for Food Packages

Nowadays, the use of biodegradable and bio-derived plastics such as poly(lactic acid) (PLA) cellulose in food packaging applications are replacing different more conventional oil-derived polymers that much expensive unsuitable for environment. However, their high transparency to ultraviolet (UV) radiation limits current commercialization. Therefore, this study focuses on deposition organic thin films commercial PLA order enhance performance, particular UV shielding. Coatings with natural biocompatible (edible) molecules, quinine p-Coumaric acid, dispersed matrices deposited by comparing techniques spray coating spin coating. Morphological characterizations carried out atomic force microscopy (AFM) scanning electron (SEM), spectroscopic performed light transmission measurements. Our results show it is possible protection using a suitable these materials.