Geology Reference
In-Depth Information
a
Quercus robur
Unsaturated
C
18
C
16
IS
C
14
C
28
C
18
C
12
C
22
C
32
C
20
C
26
C
30
C
10
C
24
Retention time
b
Quercus robur
C
16
OH
C
12
OH
C
14
OH
di-OH
C
18
IS
C
18
tri-OH
C
16
Retention time
Fig. 3.6
Distribution of fatty acyl moieties in modern
Quercusrobur
(
a
) Distribution of fatty
acyl moieties in total lipid extract. (
b
) Distribution of fatty acyl moieties in saponifi ed extract
from residue 1
the absence of vinyl phenol post saponifi cation also attests to the successful removal
of the cuticle. Acid hydrolysis post saponifi cation on selected leaves yielded a
blackish residue (residue 3, Fig.
3.1
) and subsequent analysis revealed the presence
of lignin moieties but no aliphatic components.
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