Irradiation was delivered via a Cobalt-60 source (Gamma Beam
650-Nuclear Agency of Malaysia) and dosimetry carried out using
Harwell Gammachrome YR PMMA dosimeters sealed in aluminium foil/polyethylene laminate sachets. The dose range was
0.47–0.50 kGy h
1
for both treatments III and IV, giving a dose
uniformity of 1.06. Radiation exposure was 10 min giving a dose
range for the fruits of 0.078–0.083 kGy. The mean value of
0.08 kGy has been used throughout the text. Following treatment
the cartons were held at 1171°C and 80–90% RH for up to 28 days
to simulate storage/transport. Subsequently they were exposed to
ambient temperature (2472°C) for 7 days to simulate retail
conditions, during which time typical ripening processes resumed.