20 



THE SMALL GRAINS 



and diastase l for the conversion of starch into maltose 

 (malt sugar). 2 The oils are probably first split into 



<* 6 





FIG. 9. Top, longitudinal section of barley grain. Bottom, photo- 

 micrograph of the scutellum of a germinating barley kernel, showing 

 the epithelial layer at e. 



1 There are also diastases concerned with the process of 

 translocation, occurring in the chlorenchyma of leaves. A partic- 

 ular form, of interest to cerealists, is the takadiastase, produced 

 during the action of Aspergillus Oryzce upon wheat or rice 

 starch (Duggar, 1911, p. 270). 



2 It is this diastatic ferment which is chiefly concerned in the 

 rather extensive business of barley malting. 



