The benefits of fruits and vegetables are often attributed to their high
antioxidant content. Research supports a role of secondary plant
metabolites particulary polyphenols in the prevention of degenerative
diseases e.g. cardiovascular diseases and cancer. Apple fruit are an
important source of secondary plant metabolites and one of the major
phenol sources being consumed during the whole year. The present
investigation was undertaken to determine antioxidant capacity in
selected apple cultivars depending on cultivar and different modes
of postharvest storage. Additional storage at 20 °C was tested to
simulate the conditions at the consumers’ home (shelf life). Antioxidant
capacity differed between the cultivars. Cold storage (1 °C)
for 4.5 months increased the antioxidative capacity and polyphenol
content in most of the cultivars. Shelf life led to a decrease in
polyphenol content and in antioxidant capacity. Storage under
controlled atmosphere led to low increases of both antioxidant
capacity and polyphenol content. In some cultivars polyphenol
content remained stable. After the shelf life period lower values
for antioxidant capacity were determined, in combination with no
changes in phenol content. Correlation analysis showed a positive
correlation between total phenols and antioxidant capacity (TEACValue).
Lipophilic antioxidants decreased during storage.
Storage experiments indicated that a high content of polyphenols
and antioxidants can be sustained by optimal storage conditions, these
fruit may contribute to an antioxidant rich diet and may impart health
benefits.