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| ©Copyright 2001 Ohio Corn Marketing Program. |
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Parts of a Corn Kernel
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The
Endosperm is about 82% of the kernel's dry weight and is the source
of energy and protein (starch) for the germinating seed. There are two
types of endosperm, soft and hard. In the hard endosperm, starch is
packed tightly together; in the soft endosperm, the starch is loose.
When corn dries in the field before harvest, the moisture loss causes
the soft endosperm to collapse and form a dent in the top of the kernel.
The
Pericarp, also called the hull, is the outer covering of the kernel
that protects it from deterioration. It is water- and water
vapor-resistant and is undesirable to insects and micro-organisms. 
The
Germ is the only living part of the corn kernel. It contains the
essential genetic information, enzymes, vitamins and minerals for the
kernel to grow into a corn plant. About 25% of the germ is corn oil.
Corn oil is the most valuable part of the corn kernel because of its
amount of linoleic acid (polyunsaturated fat) and its bland taste. 
The
Tip Cap is the only area of the kernel not covered by the pericarp.
It was the attachment point of the kernel to the cob. It is the major
entry path into the kernel.
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© 2004, 2005, 2007 CAMP MASTERS Popcorn™ |
||
| Last Edited July 28, 2005 |
|
|
| ©Copyright 2001 Ohio Corn Marketing Program. |
|
Parts of a Corn Kernel
|
|
© 2004, 2005, 2007 CAMP MASTERS Popcorn™ |
||
| Last Edited July 28, 2005 |