INULASE FORMATION IN ASPERGILLUS 



117 



question as to whether or not starch is more efficient than su- 

 crose in stimulating the production of inulase can best be discussed 

 in connection with data to be presented later. The numerical 

 data of this experiment are presented in tabular form below. 



TABLE 2 



The above experiment deals with substances, all of which re- 

 quire hydrolysis before the fungus is able to utilize them. In 

 order to check up the results already obtained and at the same 

 time compare the effects of substances which require enzyme ac- 

 tion with a substance which may be used directly as a source of 

 carbon on inulase formation, the above experiment was repeated 

 and dextrose was used in addition to the carbohydrates already 

 employed. As above described the source of carbon was added 

 to the culture medium in the proportion of 1%. Fourteen cul- 

 tures for each of the carbohydrates named were run until the 

 beginning of the sporulation period. The results of these ex- 

 periments are tabulated as follows: 



TABLE 3 



Showing the effect of different sources of carbon in 1% concentration on inulase 



formation 



