Özet:

Because of their therapeutic properties, the aerial parts of Silybum marianum have traditionally been used in folk medicine. The purpose of this study was to determine the antioxidant capacity and total phenol and flavonoid contents of methanol extracts of Silybum marianum aerial parts. DPPH (2, 2-diphenyl-1-picrylhydrazil) free radical scavenging and reducing power assays were used to assess the antioxidant capacity of Silybum marianum. The total phenol and flavonoid contents of each extract were determined using the Folin-Ciocalteu and aluminum trichloride methods, respectively. DPPH (2, 2-diphenyl-1-picrylhydrazil) free radical scavenging assays were used to assess the antioxidant capacity of Silybum marianum extracts. All of the extracts tested showed impressive total phenolic and total flavonoid content, as well as potent antioxidant capacity. The methanolic extract was found to be containing a number of total phenols (56.95±0.78  mg of gallic acid equivalent per gram of dried material) and flavonoids (86.09±0.35 mg of quercetin equivalent per gram of extract). The same extract also had a significantly higher DPPH-reducing power and scavenging capacity (Inhibition % =  91.77±0.12). These findings imply that Silybum marianum aerial parts could be used as a natural source of antioxidants in the food, pharmaceutical, and cosmetic industries.

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