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The research shows the antioxidant potential of methanolic and methanolic-water extracts of two species Eryngium amethystinum and Eryngium planum using the β-carotene-linoleic acid assay. The fruits of both species were the source for preparing the samples. The antioxidant measurements were done by UV-VIS spectrophotometric using the phenomenon of bleaching of solution of β-carotene during its oxidation. The results are presented as AA50 value, which refers to the concentration of a substance needed to inhibit 50% oxidation of a sample and the standard activity coefficient (SAC), which corresponds to the amount of reference substance (trolox) to which it has the same potential like the tested substance.

Screening of the antioxidant potentials of polar extracts from fruits of Eryngium planum and Eryngium amethystinum