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Mahdi et al. 1971
Figure 2. P. urinaria chromatogram shows the peaks of Compound 1, gallic acid at a retention time 8.436 min, Compound 2
corilagin at 12.144 min, Compound 3 expected to be geraniin at 12.353 min and Compound 5 ellagic acid at 16.868 min.
0.0
0.0
2.5 5.0 7.5 10.0 12.5 15.0 17.5 min
2.5 5.0 7.5 10.0 12.5 15.0 17.5 min
Figure 3. The chromatogram of external references standards mixture of gallic acid Compound 1, corilagin Compound 2 and ellagic A
Compound 5 peaks at 8.477, 12.183 and 16.961 min, respectively.
min, respectively in P. urinaria chromatogram (Figure 2).
The chromatograms of GA, Cor and EA reference
standards mixture shows peaks of retention‟s time at
8.477, 12.183 and 16.961 min, respectively (Figure 3).
Figure 4 shows the chemical structure of the phenolic
compounds identified in the extracts and geraniin which
is structurally closed to corilagin, its peak could be much
closed to the corilagin peak such as Compound 3 in the
chromatograms (Figures 1 and 2). The expectation was
compared to previously identification of geraniin closed to
corilagin in previous identification of phenolic compounds
described previously (Thitilertdecha et al., 2010). It was
cleared that these compounds are large molecules, have
high molecular and their solubility are varied from water
soluble compound such as GA to lower water soluble EA.
It was also cleared from the chromatogram (Figure 1) and