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

Revision as of 12:25, 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.

Analytical instrumentation and procedures

Chromatograms

Extract of P. Pruinosa dyed textile, Absorbance at 350nm (mAU) by Jian Liu, China National Silk Museum

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 13: / Line 13: @@
 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.
-[[File:Desert polar info.PNG|center|frame|Absorbance at 350nm (mAU)]]
 == Analytical instrumentation and procedures ==
@@ Line 23: / Line 20: @@
 == Chromatograms ==
+[[File:P populus HPLC.PNG|center|frame|Extract of P. Pruinosa dyed textile, Absorbance at 350nm (mAU) by Jian Liu, China National Silk Museum]]
 [[File:Desert polar HPLC.PNG|center|frame|Absorbance at 350nm (mAU)]]