RESPIRATION AND CATALASE ACTIVITY IN SWEET 
CORN 
Charles O. Appleman 
In a former paper^ it has been shown that there is an invariable 
paralleHsm between respiratory intensity of potato tubers and the 
catalase activity in the expressed juice. An increase or decrease of 
§40 
X 
& 
o 
:f 30 
Uf 
20 
10 
30-C 
■ 
m 
12345 6789 10 
Days 
Fig. I. Graphs showing respiratory intensity of sweet corn during storage. 
respiration in the tubers is always accompanied by a corresponding 
increase or decrease of catalase in the juice. The experiments recorded 
1 Appleman, Chas. O. Relation of oxidases and catalase to respiration in plants. 
Amer. Journ. Bot. 5: 223-233. 1916. 
207 
