Citrus cultivars with high flavonoid contents in the fruits

The flavanone contents of some lesser known citrus cultivars grown in Cuba have been determined in research searching for citrus species/cultivars with high flavanone contents, The cultivar 'Galleta' of the mandarin (Citrus reticulata Bianco) has a higher hesperidin content than the hybrid mandarin 'Nova', which is currently being used for the commercial obtainment of this flavanone. The grapefruit cultivar 'Isaac' had higher naringin levels than reported in the literature for any citrus species or cultivar, These two species seem potential candidates for the industrial obtainment of flavanones. With regard to neohesperidin, the 'Afin' and 'Bouquet de Fleur' varieties of Citrus aurantium L, from Spain are the best choices, A preliminary study indicated that the high flavanone contents resulted from the genetic characteristics of the cultivars, rather than from climatic effects. (C) 1997 Published by Elsevier Science B.V.