starch-based edible nanocomposite films for intelligent food packaging

Biodegradable packaging in food materials is a green technology-based novel approach to replace the synthetic and conventional packaging systems# ph-sensitive starch-based films were developed by incorporating different amounts of zinc oxide nanoparticles and curcumin# prepared films had suitable mechanical properties# however, starch-zno nanocomposite films exhibited higher moisture content and non-transparency than starch film# among all films tested, nanocomposites film containing 0#1, 0#25, 0#5 and 1 wt% of zno on starch basis exhibited the best performance in antioxidant and antibacterial activities# scanning electron microscopy showed nanoparticles were uniformly distributed in starch films# also, color variations were observed in starch-based nanocomposites films containing curcumin by changing ph# results suggested starch-zno-curcumin films could be used as a promising antioxidant and visible ph-sensing food packing materials#