The stable 2,2-diphenyl-1-picrylhyd

The stable 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical was used to measure the antioxidant capacity of the developed films. The results, expressed as Trolox equivalent antioxidant capacity values (TEAC), are shown in Tables 5 and 6. Control films (Ecoflex and Ecoflex/PLA blend) showed no DPPH radical scavenging activity, while antioxidant films showed high values of DPPH radical scavenging activity. These results confirmed antioxidant stability after film processing and the antioxidant capacity of the films in vitro.