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Radical scavenging capacity (RSC, %) versus DPPH (2,2-diphenyl-1-picrylhydrazyl) e ABTS+ (2,2’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) radicals of synthesized SiO2/PEG-based hybrids. Values are the mean ± SD of measurements carried out on three samples (n = 3), analyzed three times. SP-C5 = SiO2/PEG50%/CGA5%; SP-C10 = SiO2/PEG50%/CGA10%; SP-C15 = SiO2/PEG50%/CGA15%; SP-C20 = SiO2/PEG50%/CGA20%.
