Assertion: sweet potato's anthocyanin | /r/CapableOf | show antioxidant activity
Facets:
value: in vitro
type: LOCATION
Source sentences:
text: The anthocyanins of the purple sweet potato showed an antioxidant activity in vitro superior to those of vitamin C2, as well as the one of the anthocyanins from the grape peel, red cabbage, elderberry berry and purple corn.