596 



ANNUAL REPORT OF THE 



Off. Doc. 



On the basis of these figures, the distribution of materials of the 

 constituents in 100 pounds of the new corn is as follows: 



Distribution of Constituents of Maize Kernel Among It® Parts. 



0) 



o, 



tn 

 o 



a 



Water 



Dry matter 



Components of dry matter: 



Ash, 



Protein 



Fiber 



Nitrogen-free extract, .. 



Fat 



20.78 

 €3.49 



.48 



7.76 

 .41 



53.91 

 .98 



* Computed by adding the results for the three portions of the grain. 



These figures show that despite the imperfect separation of the 

 skin, it contains over half of the entire fiber of the kernel, and 

 very little of the protein, fat and ash. The germ, on the other 

 hand, though it constitutes only one-tenth of the kernel, contains 

 two-thirds of the fat and ash, and nearly one-sixth of the protein. 

 The endosperm, forming nearly seven-eighths of the entire kernel, 

 contains about four-fifths of the protein, one-third of the ash, fiber 

 and fat, and nine-tenths of the starch and related matters. 



The consequences of these differences in composition of the sev- 

 eral parts of the kernel are seen in the make-up of the numerous 

 by-products of corn that are left when a portion of the kernel is 

 abstracted for the manufacture of starch, glucose or some of the nu- 

 merous breakfast foods that are made from this grain. 



Shelled Corn. * 



Among the samples submitted for examination were the following 

 lots of shelled corn: 



