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Sweet
corn is produced for human consumption as either a fresh or processed
product. The specific time when sweet corn originated cannot be pin-pointed;
however, sweet corn was grown by the American Indian and first collected
by European settlers in the 1770's. The first variety, Papoon, was acquired
from the Iroquois Indians in 1779.
Sweet corn loses sweetness and freshness rapidly after harvest, and the
rate of loss increases with increasing temperature. Corn harvested early
in the morning will be 10 to 20°F cooler than that harvested later
in the day. Because sweet corn has a high respiration rate, it produces
heat which can cause ears in bulk trailer loads to heat up considerably
during delays between picking and precooling. The longer the delay, the
greater the heating, conversion of sugar to starch, and subsequent quality
loss. Sweet corn must be moved quickly from the field to packing sheds,
where it should be rapidly sorted, packed, and cooled.
North Carolina Sweet Corn
Growers/Shipper List
Cooling/Storage Requirements of North Carolina Sweet
Corn
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Suitable Cooling Method(s)
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Hydrocooling, Icing
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Optimum Temp ºF
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32ºF
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Freezing Temp ºF
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31ºF
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Optimum Humidity %
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95-98%
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Normal Storage Life
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5-8 days
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