Ripening behavior of papaya (Carica papaya L.) exposed to gamma irradiation
Robert E. Paull
Postharvest Biology and Technology Vol: 7 Issue: 4 Pages: 359-370.
1996
บทคัดย่อ
Papaya fruit treated with 250 Gy of 
-irradiation
frequently softened more uniformly than non-irradiated fruit. Fruit with less
than 25% of their surface colored yellow placed immediately into storage at 10°C
after irradiation developed skin scald. This was prevented by delaying storage
by 12 h. Fruit that were irradiated when 30% of the skin was yellowed softened
at a slower rate than non-irradiated fruit. There was no difference in
softening rate between irradiated and non-irradiated fruit at the mature green
stage. Fruit stored for 14 days at 10°C before returning to 25°C
had a slightly slower rate of softening than fruit allowed to ripen at 25°C
without storage. Premature flesh softening occurred occasionally in fruit that
had between 8 and 18% of the skin yellow and 70-90% flesh coloring when
irradiated. Premature softening occurred in the tests run on fruit that were
harvested during the warmer months; fruit harvested during the cooler months
did not show the condition. The conditions of growth that predispose fruit to
more rapid softening following -irradiation
were not determined.