The range of concentrations of carotenoids for different cultivars
and harvest seasons was 1.65 lg of b-carotene/g DW for the Powderblue
cultivar and 35.2 lg of b-carotene/g DW for the Elliot cultivar.
This low level of carotenoids in blueberries was also verified
by others (Jacques, Pertuzatti, Barcia, Zambiazi, & Chim, 2010;
Marinova & Ribarova, 2007). Jacques et al. (2009) also found that
Powderblue had the lowest level of carotenoids among the seven
samples analyzed. This is due to the fact that the primary antioxidants
are anthocyanins. Fruits with relatively high concentrations
of anthocyanins have a lower concentration of carotenoids during
the ripening process.