Pectase 
Amylase (diastase) 
Zymase 
Emulsin 
Lipase 
Pepsins and trypsines 
Oxidases and peroxidases 
Catalase 
Reductase 
Miscellaneous substances. 
Methane 
CH, 
Heptane 
Cris 
Methylamine 
CH;N, (CH;NH:) 
Tri-methylamine 
C;HwN, (CHs) 3N) 
Formaldehyde 
CH,0, (H— CHO) 
ENZYMES 153 
Hydrolyzing pectin com- 
pounds to monosaccharids. 
Hydrolyzing starch to d-glu- 
cose (probably several steps, 
involving perhaps several 
enzymes). 
Splitting d-glucose into ethyl 
alcohol and COs. 
Hydrolyzing amygdalin to 
HCN, d-glucose and oil of 
bitter almonds. 
Acting on fats, saponifying 
and emulsifying them. 
Hydrolyzing protein com- 
pounds to different degrees of 
simplicity. 
Many kinds, bringing about 
numerous oxidations within 
the plant. 
Decomposing peroxides in the 
plant. 
Bringing about reducing proc- 
esses in the plant. 
Under this head are grouped a 
number of totally unrelated 
substances that do not come 
under any of the foregoing 
heads and that are not numer- 
ous enough to form classes by 
themselves. 
Produced by bacterial fermen- 
tations of celluloses. 
In the oil from the seeds of 
some pines. 
In Mercurialis perennis and 
M. annua, 
In Chenopodium, in blossoms 
of Crataegus, and of pear, etc. 
Apparently one of the first 
steps in the photosynthesis of 
CO, and HO; to form carbo- 
