CONTENTS OF APPLES VARY GREATLY
The polyphenol content of different Eastern European
apple cultivars can vary greatly. The identification and quantification
of the polyphenols in these apple cultivars is the aim of a group of
scientists in Wroclaw, Poland.
In their studies, the Renette, Red Boskop and Jester
apple varieties were found to contain the highest amounts of
polyphenolic compounds whilst the Topaz, Lobo and Moringen Rosenapfel
varieties were found to contain the least. The used apples were also
analyzed for their proanthocyanidin (PA), a group of polyphenolic
compounds, content which were found to be highest in the Red Boskop
Apples are a major source of these beneficial
compounds in the European diet. However, the amounts of these compounds
are known to vary greatly between different apple species but the
information available on this availability is scarce. Identifying these
differences and the species which contain optimal amounts of
polyphenolic compounds is especially useful for apple growers to aid in
the selection of those which would naturally contain higher amounts of
these beneficial compounds.
Apples and apple derived products could present a
useful way to deliver the benefits of these polyphenolic compounds to
consumers. Especially cloudy juices have been considered as a possible
product for this purpose. However, in addition to the varietal
differences in chosen apple species, the content of polyphenolic
compounds in cloudy juices is also dependent on the production methods.
Apple fruits and products with improved flavonoid content could
potentially have a broad impact on human health as flavonoids are known
as the most abundant dietary antioxidants. Their antioxidant activity
has been found to play a key role in the potential prevention of many
major chronic diseases.
Agricultural University of Wroclaw, Poland