Desert Poplar (Populus euphratica) LC

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[[File:|thumb|Yellow Botanic Gardens]]

Description

Desert Poplar (Populus euphratica)is a medium-sized deciduous tree that may grow to a height of about 15 m and a girth of 2.5 m (8.2 ft) where conditions are favourable. The stem is typically bent and forked; old stems have thick, rough, olive-green bark. While the sapwood is white, the heartwood is red, darkening to almost black at the center. The roots spread widely but not deeply. The leaves are highly variable in shape. The flowers are borne as catkins, those of the male are 25–50 mm (0.98–1.97 in) long, those of the female 50–70 mm (2.0–2.8 in). The fruits are ovoid-lanceolate capsules, 7–12 mm (0.28–0.47 in) long, containing tiny seeds enveloped in silky hairs.

Historical importance

Summary of results

Multiple flavonoids, luteolin, apigenin, chrysoeriol and their glycosides were identified from desert poplar dyed wool samples.

Analytical instrumentation and procedures

Chromatograms

center|frame|Absorbance at 350nm (mAU)


Sample information

sample information, By R. A. Laursen, Boston University

Identified compounds

Luteolin UV-Vis

Luteolin.PNG

3-O-Methylquercetin UV-Vis

3-o-methylquercetin.PNG

Quercetin UV-Vis

QuercetinUV.JPG

Apigenin UV-Vis

Apigenin.PNG


Compound RT (min.) MW UV/vis Other
Quercetin 34.5 302 372 Comments here
Luteolin 35.7 286 348
3-O-Methylquercetin 36.6 316 358
Kaempferol 38.8 286 366
Apigenin 39.2 270 338

References

[1] [2] [3]