Fruits (about 150 g) thawed for 1 h at 20 C were homogenised
using a food processor (CombiMax 700, Braun GmbH, Kronberg,
Germany), then aliquots (5 g) were extracted with acetone
(2 10 ml) as previously described . Acetone was removed from the extract by a nitrogen flow
at 37 C and the volume of the extract was made up to 10 ml with
water. The samples were extracted in duplicates and stored at
80 C until analyses of total phenolics (TP), total monomeric
anthocyanins (TMA) and individual phenolic compounds by HPLC