Flavonoids & lignans
Flavonoids are polyphenolic compounds ubiquitously present in plant foods. In a range of experimental models these compounds have demonstrated beneficial health effects. Examples of flavonoid rich foods are: tea, chocolate, onions and apples.
Lignans formed a group of diphenolic compounds in plant foods. After ingestion, plant lignans can be converted into enterolignans and are biologically active metabolites. Examples of lignan rich foods are: oilseeds, whole grains, vegetables and fruits.