Fig. 4.

Radical scavenging capacity (RSC) against the ABTS^•+ and DPPH^• radicals, as well as ferric reducing antioxidant potential (FRAP) of the films (A). Statistically significant differences (p < 0.05) for ABTS, DPPH, and FRAP assays are indicated by subsequent lower, upper Latin letters and Greek letters, respectively. Different letters indicate statistically significant differences. The release profiles of polyphenols presented as PPh concentration in release medium (B) and as percentage of released PPh in reference to the initial content in the films (C).