1904] 



Studies on Enzyme Action. 



507 



Emulsin. — Tables VI I — X refer to experiments made with emulsin ; 

 the conclusions to be drawn from them are precisely similar to those 

 deduced from the experiments with lactase. It is to be noted that 

 emulsin acts much less rapidly than lactase. 



2 grammes Milk Sugar per 100 ex. 





Table ¥11. 



Table VIII. 







0*2 gramme Emulsin. 



0*4 gramme Emulsin. 





X. 



K. 



t. 



X. 





K. 



Jhr, 



3-2 



0-0282 



1 hr. 



4 



9 







0218 



1 » 



4-8 



0-0214 



2 hrs. 



7 



5 







0169 



2 hrs. 



6-4 



0-0143 



4J„ 



9- 



4 







0095 



3 „ 



7-6 



0-0114 



6 „ 



10- 



6 







0081 



H „ 



9-0 



0-0091 



23 „ 



30- 



5 







0069 



6 „ 



10-0 



0-0091 



29 „ 



35- 











0064 



23 „ 



19-7 



0-0041 



48 „ 



47 



8 







0059 



29 „ 



22-0 



0-0037 



53 „ 



50 











0057 



48 „ 



29-0 



0-0031 



144 „ 



84 











0055 



53 „ 



30-7 



0-0030 













m „ 



62-2 



0-0029 













264 „ 



77-5 



0-0024 















5 grammes Milk Sugar per 100 



c.c. 











Table IX. 







Table X. 







- 4 gramme Emulsin. 



0-1 gramme Emulsin. 



t. 



X. 



K. 



t. 



X. 





K. 



1 hr. 



1-0 



0-00440 



1 hr. 



3 



1 







•0137 



2 hrs. 



1-8 



0-00395 



2 hrs. 



4 



•6 







■0102 



4 „ 



3-2 



0-00352 



3 „ 



6 



•0 







•00896 



6 „ 



4-5 



0-00333 



4 „ 



7 



•o 







•00790 



22 „ 



15-0 



0-00320 



6 „ 



8 



8 







•00667 



46 „ 



25-5 



0-00277 



22 „ 



21 



•5 







•00478 



70 „ 



35-6 



0-00271 



46 „ 



34 



7 







•00404 



167 „ 



54-7 



0-00206 



70 „ 



46 



•0 







•00382 



Maltase.- 



—Tables XI and XII refer to experiments with maltase and 



maltose and show that here again the same conclusions hold. K 

 decreases steadily : when the proportion of enzyme is small the 

 change is at first linear. It is of interest as confirming these results 

 that when K is calculated from the value given in Croft Hill's tables* 

 a similar series of decreasing values is obtained. 



* * Chem. Soc. Trans.,' 1898, p. 634. 



