Date 
1908 
1909 
1909 
1909 
1910 
1911 
1912 
1912 
1912 
1913 
1913 
1913 
1913 
1914 
1914 
1915 
1072 Wisconsin Academy of Sciences, Arts, and Letters . 
Table 63. — Yield of oleoresin as reported in the literature —Continued. 
Yield of oleoresin to— 
Observer 
Alco¬ 
hol 
Ace¬ 
tone 
Ether 
Other 
solvents 
Vanderkleed .... 
Per ct. 
Per ct. 
Per ct. 
Per cent 
( Solvent (?) 
] 5.58 
f Q W 
j Solvent!?) 
1 3.14 to 6.91 
8.20 
9.03 
Yanderkleed.... 
Vanderkleed .... 
Vanderkleed .... 
Patch.. 
3.70 to 
6.20 
Vanderkleed .... 
i 
| 
Solvent!?) 
5.63 
6.31 
10.12 
3,40 to 6.60 
1 
7.12 to 9.48 
1 3.44 to 6.64 
6.85 to 11.10 
l 
Vanderkleed .... 
Vanderkleed .... 
Patch.. 
3.30 to 
6.00 
6.40 
8.30 
4.23 
Hooper........... 
Patch............ 
Vanderkleed .... 
i Solvent!?) 
I 3.10 to 5.75 
Vanderkleed .... 
J Solvent!?) 
( 6.85 to 9.92 
j Solvent!?) 
j 2.81 to 5.24 
Engelhardt....... 
Rippetoe... 
4.98 
5.50 
-6.20 
6.23 
2.79 
4 97 
5.31 
5.45 
Vanderkleed.... 
j Sol vent (?) 
1 5.06 
9.00 
3.93 
7.99 
8.90 
V anderkleed .... 
Remarks 
Reported as yield of oleoresin. 
Represents the yield from 16 
samples of Jamaica ginger. 
Reported as oleoresin. 
African ginger. 
j Jamaica ginger. Reported as 
I yield of oleoresin. 
African ginger. Reported as 
yield of oleoresin. 
Jamaica ginger. Reported as 
yield of oleoresin. 
African ginger, Reported as 
yield of oleoresin. 
Jamaica ginger. Reported as 
yield of oleoresin. 
African ginger. Reported as 
yield of oleoresin. 
Jamaica ginger. 
Young rhizomes harvested in 
December. 
Rhizomes harvested in Feb¬ 
ruary. 
Average yield of 9 samples of 
ginger. 
Reported as yield of oleoresin. 
Results obtained in extract¬ 
ing 37 samples of Jamaica 
ginger. 
Results obtained in extracting 
17 samples of African ginger. 
Results obtained in extracting 
8 samples of Jamaica ginger. 
Jamaica ginger. 
African ginger. 
Average yield of 3 samples of 
Jamaica ginger. 
Average yield of 3 samples of 
African ginger. 
Yield of Jamaica ginger. 
“ “ African ginger. 
