Du Mez — The Galenical Oleoresins. 1083 
Table 87.-— Iodine values of oleoresins prepared in the laboratory. 
Sample 
No. 
Date 
Observer 
Solvent 
Iodine value 
1. 
1916 
DuMez ... 
Alcohol..... 
122.3 
2. 
Acetone ................... 
122.4 
3. 
“ 
111.5 1 
4. 
124.1 
5. 
“ 
Ether .... 
121.1 
6. 
44 
Petrol, ether. 
126.9 
1 The drug- in this instance was extracted by simple percolation. 
Table 88.— -Iodine values of commercial oleoresins. 
Sample 
No. 
Date 
Observer 
Source 
Iodine value 
1. 
1916 
DuMez . 
Squibb & Sons . 
104.2* 
109.9 
112.0 
2... 
Lilly & Co. 
3. 
“ 
sharp & Dohme . 
1 Contained ether. 
Special Qualitative Tests. 
Most of the qualitative methods which have been mentioned in 
connection with the standardization of this preparation are of 
the nature of tests for the detection of adulterations. The oleo- 
resin of capsicum 1 is the adulterant which appears to have re¬ 
ceived special attention, several methods for detecting its pres¬ 
ence having been reported. 
Tests for the Presence of the Oleoresin of Capsicum 
La Wall, in 1910, pointed out the necessity of a test for the 
presence of the oleoresin of capsicum as he had observed that 
many of the commercial samples of the oleoresin of ginger used 
in the preparation of ginger ale extracts were adulterated with 
this substance. At the same time, he also described a method 
whereby this form of adulteration might be detected. His 
method is almost identical with that of Garnett and Grier pub¬ 
lished in 1907, both being based on the destruction of the 
1 While the oleoresin of capsicum per se may occassionally be added to the 
finished product, it is thought that the adulteration is usually accomplished 
hy mixing capsicum with the ginger previous to the extraction of the oleoresin. 
