Post harvest diseases fruits and vegetables - Xavier University ...

FREEDOM PALESTINE FREEDOM PALESTINE FREEDOM PALESTINE
110 Postharvest Diseases of Fruits and Vegetables
regulations which require all imported South African citrus fruit to be cold
sterilized (12 days at 0.5°C) in order to destroy all forms of insect
infestation. The resulting incidence of core rot caused by Alternaria citri
and Fusarium spp. may become unacceptably high in cold-sensitive
oranges stored at 4.5°C after the cold treatment (Pelser and Grange,
1995).
The guiding principle for choosing storage temperature is the use of
the lowest temperature that does not harm the host. The storage
temperature for fruits and vegetables should, therefore, be just above
their injury threshold (Hardenburg et al., 1986). Recommended
temperatures and relative humidities for storing fruits and vegetables
are summed up in Tables 7 and 8.
Commodity
TABLET
Recommended storage conditions for fruits i' 2
Apple
Bramley's Seedling
Cox's Orange Pippin
Crispin (Mutsu)
Discovery
Golden Delicious
Granny Smith
Jonathan
Mcintosh
Red Delicious
Rome Beauty
Spartan
Temperature
(°C)
3 to 4
3 to 3.5
1.5-2
3.5
1.5 to 2
-ItoO
3 to 3.5
1.5 to 3.5
3.5 to 4
lto2
0 to 0.5
Relative humidity
(%)
90-95
90-95
90-95
90-95
90-95
90-95
90-95
90-95
90-95
90-95
90-95
1 Reproduced with permission from A Colour Atlas of Postharvest Diseases
and Disorders of Fruits and Vegetables, Vol. I, by Anna S. Snowdon,
published by Manson Publishing, London, 1990. It also includes data
from the Agricultural Research Organization, Bet Dagan, Israel.
2 The leading lines in determining these data are the temperatures
suitable for achieving the longest storage duration followed by
appropriate 'shelf life'.
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