Figure 1From: Carotenoids, total polyphenols and antioxidant activity of grapes (Vitis vinifera) cultivated in organic and conventional systemsHPLC-PDA chromatogram of carotenoids separated from fresh skin grapes (Muscat Ottonel variety-conventional). The carotenoids identified are: (3) lutein and (4) b-carotene.Back to article page