Difference between revisions of "Desert Poplar (Populus euphratica) LC"
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== Description == | == 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 == | == Historical importance == | ||
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== Summary of results == | == Summary of results == | ||
| − | Multiple | + | Multiple flavonoids, luteolin, apigenin, chrysoeriol and their glycosides were identified from desert poplar dyed wool samples. |
== Analytical instrumentation and procedures == | == Analytical instrumentation and procedures == | ||
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| − | [[ | + | [[FiPNG|center|frame|Absorbance at 350nm (mAU)]] |
Revision as of 10:10, 1 September 2017
[[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
Identified compounds
| 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]