1914] 
BARTHOLOMEW—DIASTASE IN RED ALGAE 
Fehling’s solution precipitates* 
ihe Ole e 60; 6 6 6.8 e oe 
ed 
si nl, net Gh, ak ee A ee ae es 
wee we) see 8 8 eS 8 
used des: 
Algal extract 
Plate II, 6-OYO 
“ce + 
“ee 
ce 
i 
“ce 
‘6 
‘é 
é 8 a) ee ele 
*Although the precipitates from the two different extracts were 
ignate, as nearly as could be estimated, equal amounts of the two precipitates. 
141 
Commercial diastase 
eee eee 
ee | 
eee eens 
e080 8a wl 
Plate I, 
6-YYG 
of different colors, the terms 
These designations were of course only relative, but they served 
The colors designated in the tables were 
recorded within a few minutes after the application of the testing 
very well as a guide. 
reagents. 
Results 
I. DIGESTION IN TEST TUBES 
Tables I-IV were chosen promiscuously from a large number of 
tables, and are used as types to show the effect of the algal extract 
on starch paste and its rate of action in comparison with that of | 
commercial diastase. 
TABLE I 
EXTRACT FROM CERAMIUM 
AMOUNTS oF VARIOUS 
SOLUTIONS 
ee, 
T cc. algal extract 
8 een ae CC. 
ee ae ee ae tay ea eM 
ithe TEL ee ea 
ath ee a ee 
eR ee we 
ee lib, ey Eee ae 
Control, 5 CC. starch paste. . 
extract 
A 
E 
ee 
ict Te ee eo 
Ce ae te eee ae eo 
AFTER Ir HOURS 
AFTER 24 HOURS 
: Amts. ppt. with + Amts. ppt. with 
Todine col A Iodine color " 
wding color |"Fehtingscolu- | Toding olor | Peking sau 
Tinge of : 
purple Trace Blue-purple | Slight 
Blue-purple | Slight Purple Small 
Light purple} Fair Light purple} Medium 
Very light 
purple Fair Light brown} Marked 
Blue None Blue None 
Blue None Blue None 
Blue None None 
Deel seeo wos None Seger tt ereeae ome 
Medium Medium 
ee ee ee oe 
