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(A) Total phenolic compounds released from PVA/Ced/K sponges, (B) time-dependent decolourization of ABTS•+ dye by PVA/Ced/K sponges, and (C) Scavenging properties of PVA/Ced/K sponges against DPPH free radicals. Results are shown as mean ± SD (**** p < 0.0001).
