Grape Carotenoids: Changes During the Maturation Period and Localization in Mature Berries

Abstract

Changes in the contents of four carotenoids during maturation of three varieties of <i>Vitis vinifera</i> were studied and the compounds localized in the main parts of the mature berry. Carotenoid levels decreased progressively from the onset of fruit development to the end of maturation, with a sharp decrease during veraison. The possible cause of this trend is discussed. In mature berries, carotenoid levels were higher in skin than in pulp. No carotenoids were detected in juice.