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

Revision as of 10:59, 5 September 2017

Desert Polar tree

Description

Desert Poplar, 灰胡杨, (Populus pruinosa)is a medium-sized deciduous tree. The tree grows up to 10(-20) m tall. The bark has grayish yellow color. It naturally grows in Central and Southwestern Asia, including Western China, [1]

Historical importance

Summary of results

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

Comments: • Acid hydrolysis showed significant amounts of flavone glycosides, probably luteolin and chrysoeriol glucuronides, which are known to be resistant to acid hydrolysis, as well as luteolin and chrysoeriol. • Other methylated derivatives of luteolin may also be present.

Absorbance at 350nm (mAU)

Analytical instrumentation and procedures

Chromatograms

Absorbance at 350nm (mAU)

Sample information

Compounds identified, By R. A. Laursen, Boston University

Identified compounds

Luteolin UV-Vis

Apigenin UV-Vis

Compound	RT (min.)	MW	UV/vis	Other
Luteolin	35.7	286	348
Apigenin	39.2	270	338

References

[1] Flora of China, efloras.org Populus pruinosa http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200005695 [2] [3]

@@ Line 3: / Line 3: @@
 == Description ==
-Desert Poplar, 胡杨, (''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.
+Desert Poplar, 灰胡杨, (''Populus pruinosa'')is a medium-sized deciduous tree. The tree grows up to 10(-20) m tall. The bark has grayish yellow color. It naturally grows in Central and Southwestern Asia, including Western China, [1]
+== Historical importance ==
-== 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 ==
@@ Line 61: / Line 59: @@
 == References ==
-[1]
+[1] Flora of China, efloras.org  ''Populus pruinosa'' http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200005695
 [2]
 [3]