ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Using the respiration rate of ‘Pink Lady’TM apples as an indicator of their susceptibility to the flesh browning disorder

East A.R.; Maguire K.M.; Jobling J.J.; Tanner D.J. and Mawson A.J.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.107

2004

บทคัดย่อ

 ‘Pink Lady’^TM apples are susceptible to flesh browning in storage. The symptoms of this disorder are browning in a radial pattern from the core into the cortex and softening of the fruit. The disorder is sporadic in nature with o­nly some growers in some seasons being affected. It is likely that the disorder is the result of a combination of factors. Other work has shown that ‘Pink Lady’^TM apples are susceptible to CO₂ injury.

Fruit with severe browning symptoms had 35% higher respiration rate (P<0.0001) and a greater than 60% reduction in the ability to produce ethylene (P<0.0001) at the end of storage. Fruit that had high rates of respiration at 80 days had a higher risk of developing browning symptoms later in storage (P<0.0001). High fruit respiration rates indicate high internal CO₂ concentration (assuming that fruit permeances are equal).

This work shows that it may be possible to use the rate of respiration as a diagnostic tool to determine the susceptibility of a sample of fruit to flesh browning later in storage.