In summary, the contents of the studied bioactive compounds
and the AA are varied significantly. The total polyphenols are the
main contributor to the AA of fruits and berries, the contribution of
the ascorbic acid is moderate and of dietary fibers is only minimal.
The most possible reasons of the discrepancy in the results of the
investigations of the cited authors is the use of samples from
different geographic regions, which were grown in different climatic
conditions.