CONIFEE^E
The oil contains Z-camphene, Z-/3-pinene, 1-a-pinene, Z-phellandrene,
dipentene, borneol, bornyl acetate, and cadinene.
- The oil from the leaves and twigs of Abies magnified has the
following characters :—
Specific gravity 08665
Optical rotation - 167°
Refractive index 1-4861
Acid value 0-75
Ester „ 9-93
„ ,, (after acetylation) 36-22
Traces of furfural were found in the oil, as well as Z-/3-pinene, Z-phel-
landrene, bornyl esters and free borneol.
- Schorger
1
has examined the oil distilled from the leaves and
twigs, and also that from the cones of Pinus ponderosa, the Western
yellow pine, and found them to have the following characters :—
Leaves and Twigs. Cones.
0-04 to 0-126 0-063
0-8718 „ 0-8849 0-8757
Yield per cent.
Specific gravity (15°)
Optical rotation (20°)
Refractive index (15°) .... 1-4789 „ 1-4838
Acid value 0'67 „ 2'36
Ester „ 3-88 „ 8-10
„ „ (afteracetylation)... 24-11 „ 35'68
The constituents identified are as follows :—
1-4789
1-27
7*20
22-41
Leaves and
Twigs. Cones.
Furfural ...... — trace
Z-a-pinene ......2 6
Z-camphene ......— —
Z-0-pinene ......75 60
Dipentene......6 12 to 13
Esters as bornyl acetate....2 2-5
Free alcohols (Z-borneol) ....7 4
"Green oil" .....3 3 to 4
Sesquiterpene ..... — —
- The oils from the leaves and twigs, and from the cones of Pinus
Lambertiana have also been examined by Schorger^2 with the following,
results:—
Yield per cent.
Specific gravity (15°).
Optical rotation (20°).
Refractive index (15°).
Acid value.
Ester „.. , 5
„ „ (after acetylation).
The percentage composition of the oils is as follows:—
Leaves and Twigs.
0-045 to 0-120
0-8676 „ 0-8738
- 16-50
1-4794
2-38
5-91
32-04
- 11*07
1-4777
0'68
2
*
22
23*25
Furfural
Z-o-pinene
Z-camphene
Z-j8-pinene
Dipentene
Esters.
Borneol
" Green oil"
Sesquiterpene
Leaves and
Twigs.
trace
21
51
12
1-5
Cones.
0-32
0-8692
- 23-18
1-4771
0-63
3-75
17-04
Cones.
trace
22
21
39 to 40
4 „ 5
1-5
3-5
1
Jour. Ind. Eng. Chem. (1914), 6, 893.
