to react under orbital agitation at 80 rpm in the dark (Novatecnica,NT145, Brazil). The absorbance of the solution was measured at517 nm after 8 h, using a spectrophotometer (Shimadzu, UV-1800,Japan). A DPPH free solution was used as a blank. The antioxidantproperty of the films was expressed as the percentage inhibition ofDPPH radical (I) [%], calculated as follows: