3.5. Chlorogenic acid and phloridzin
The concentrations of chlorogenic acid in fruit skin increased
from CM (189 DAFB) to 231 DAFB at Perth Hills and from CM to 222
DAFB at Donnybrook in 2003 (Fig. 6A and B). Chlorogenic acid accumulated
in fruit skin from CM to 217 DAFB, and had significantly
(P ≤ 0.05) declined at 231 DAFB at Perth Hills in 2004. At Donnybrook
in 2004, the changes in concentrations of chlorogenic acid
were not significantly (P ≤ 0.05) affected by delayed harvest(Fig. 6C
and D). Phloridzin accumulated in fruit skin for up to 4-week after
CM, and then declined significantly after 2-week at both locations
in 2003. However, the changes in concentration of phloridzin in
fruit skin with delayed harvest were found to be non-significant in
2004 at both locations (Fig. 6B and D).