Assertion: cardoon's leaf | /r/CapableOf | provide a source of antioxidants
Facets:
Source sentences:
text: The plant is also a significant source of pharmaceuticals; the roots and rhizomes provide a source of inulin, a demonstrated enhancer of the human intestinal flora, and the leaves provide a source of antioxidants, such as luteolin and di-caffeoylquinic acid (Lanteri and Portis, 2008).