Proprietà antiossidanti di specie erbacee spontanee eduli.

Phenolic composition and antioxidant properties of some wild edible herbaceous species belonging to three botanic families (Asteraceae, Chenopodiaceae, and Liliaceae) were evaluated. All species were found to contain phenolic acids (i.e. chlorogenic acid) and flavonoids (quercetin, apigenin, luteolin, kaempferol, and isorhamnetin glycosides). Moreover, within the different botanic families there are some species showing similar HPLC phenolic profiles, as in the case of Asphodeline lutea and Asparagus tenuifolius (Liliaceae), Cichorium intybus and Sonchus oleraceus (Asteraceae), Chenopodium giganteum and C. album (Chenopodiaceae). Regarding the antioxidant activity, C. intybus showed the highest TAA value (1,04 g Trolox/100 g f.w.), about seventeen times the TAA value assessed for the less active species (A. tenuifolius). On the other hand, the differences in TEAC values were less marked, showing the more active Crepis sancta a TEAC value about 80% higher than the less active Cirsium arvense (1,08 mM and 0,59 mM, respectively).