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(a) Total phenolic compounds released from PVA/marjoram, and PVA/marjoram/kaolin composite sponges, (b) Time-dependent decolourization of ABTS•+ dye by PVA/marjoram, and PVA/marjoram/kaolin composite sponges, and (c) Scavenging competency of DPPH free radical by PVA/marjoram, and PVA/marjoram/kaolin composite sponges. Results are presented as means ± SD (n = 5) (*** p < 0.001, and (ns) points to a non-significant difference).
