What specific flavonoid antioxidant is responsible for the coloring in red leaf lettuce varieties?
Answer
Anthocyanins
The distinctive red coloring found in red leaf lettuce varieties is attributed to the presence of anthocyanins. Anthocyanins are a specific type of flavonoid antioxidant integral to the plant's chemistry. Their presence often correlates with higher concentrations of beneficial phenolic compounds when comparing red lettuces to their green counterparts. These compounds are significant contributors to the overall antioxidant capacity of the red varieties, positioning them as a potentially stronger dietary source for antioxidants.
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