Difference between revisions of "Desert Poplar (Populus euphratica) LC"

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Revision as of 09:28, 1 September 2017

Desert Polar tree

Description

Desert Poplar (Populus euphratica)is a medium-sized deciduous tree. It 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 species has a very wide range, occurring naturally from North Africa, across the Middle East and Central Asia to western China. Its forests have largely disappeared or become fragmented over much of its natural range.

Historical importance

The species is used in agroforestry to provide leaves as fodder for livestock, timber and, potentially, fiber for making paper. It is also used in afforestation programs on saline soils in desert regions, and to create windbreaks and check erosion.

Summary of results

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

Analytical instrumentation and procedures

Chromatograms

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]