Du Mez—The Galenical Oleoresins, 
1123 
Table 12.3 —Yield of oleoresin as reported in the literature. 
Date 
1888 
1892 
1903 
1913 
Observer 
Yield of oleoresin to- 
Alco¬ 
hol 
Ace¬ 
tone 
Ether 
Other solvents 
Trimble. 
Per ct. 
Per ct. 
Per ct. 
8.79 
Per cent. 
1 Benzin 
I 2.80 
Reringer. 
Sherrard. 
9.97 
5.93 
5.00 to 
6.70 
8.84 
9.64 
5.50 
8.70 
10 15 
10.04 
10.87 
12.88 
Ballard. 
Patch... 
Engelhardt. 
.f 
(Solvent (?). 
1 9.20 ] 
10.60 1 
11.00 f 
12.50 J 
Represents total 
yield of extract¬ 
ive matter. 
Yield of oleoresin. 
Reported as yield 
of oleoresin, ( x ) 
Pepper from the 
Indies. Total ex¬ 
tract. 
Pepper from Gua¬ 
deloupe. Total 
extract. 
Pepper from the 
coast of Dahomey. 
Total extract. 
Represents total 
yield of extract. 
Reported as yield 
of oleoresin. 0) 
(1) Undoubtedly represents total extract. 
Table 124 —Yield of oleoresin as obtained in the laboratory. 
Yield of oleoresin to— 
Date 
Observer 
1 
Alco¬ 
hol 
Ace¬ 
tone 
Ether 
Petrol. 
ether. 
Remarks 
1 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
1916 
Du Mez. 
11.10 
10.65 
10.42 
7.14 
Represents total ex¬ 
tract. 
5.32 
5.09 
4.44 
3.20 
Represents the por¬ 
tion decanted and 
washed from the de¬ 
posited piperine. 
