The Skin Is the Main Event
Unpeeled potato samples show total phenolic content nearly double that of peeled samples.
Red and purple-skinned varieties like Désirée contain anthocyanins on top of chlorogenic acid (5-CQA), giving them strong antiradical activity validated across DPPH, ABTS, and ORAC assays. Chlorogenic acid alone contributes 28–45% of total antioxidant activity in red-skinned potatoes.
Key Data
345–2,852 mg/100g DM (unpeeled) vs 191–1,864 mg/100g (peeled)