22 



The Sweet Potato 



Table VII. — Composition of the Sweet Potato and Irish 

 Potato Com faked. 



the percentage of crude fiber is slightly higher, it is 

 about that commonly found in most vegetables (see 

 Table VIII). Although it would seem that the white 

 potato is slightly higher in protein, actually the sweet 

 potato contains more available protein. This is ex- 

 plained by the fact that a large part of the protein in 

 the white potato occurs in the form of amides which are 

 not available as food. The sweet potato is consider- 

 ably richer in fat and contains a perceptibly greater per- 

 centage of available carbohydrates than does the white 

 potato. The ash-content is approximately the same and 

 about the same waste occurs in peeling. As indicated 



