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reseda phyteuma/flavonoid
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12 résultats
Absorption and emission of the apigenin and luteolin flavonoids: a TDDFT investigation.
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The absorption and emission properties of the two components of the yellow color extracted from weld (Reseda luteola L.), apigenin and luteolin, have been extensively investigated by means of DFT and TDDFT calculations. Our calculations reproduce the absorption spectra of both flavonoids in good
Reseda luteola L. extract displays antiproliferative and pro-apoptotic activities that are related to its major flavonoids.
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Reseda luteola L. has been used as a dye due to its high luteolin content since ancient times. However, no pharmacological studies have been performed with Reseda extracts so far. Here, we have assessed antiproliferative and apoptosis-inducing effects of the Reseda extract RF-40. It contains 40%
HPLC quantification of dye flavonoids in Reseda luteola L. from Portugal.
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A HPLC method was developed for the simultaneous identification of Reseda luteola L. (weld) flavonoids and quantification of the main compounds responsible for the yellow color. This method was applied to a large number of wild Portuguese weld to evaluate its potential application as dyestuff for
Influence of soil fertility on dye flavonoids production in weld (Reseda luteola L.) accessions from Portugal.
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A HPLC-diode array detector (DAD) methodology was developed to allow the simultaneous identification and quantification of Reseda luteola L. (weld) dye flavonoids, luteolin, apigenin, luteolin 7-O-glucoside, apigenin 7-O-glucoside, luteolin 3',7-O-diglucoside and luteolin 4'-O-glucoside. The method
[Contribution to the study of the dyer's rocket Reseda luteola L. II. Demonstration of new flavonoids].
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[Direct densitometric determination by absorption of flavonoids of the yellow-weld (Reseda luteola L.) separated by thin-layer chromatography].
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Screening Effects of Methanol Extracts of Diplotaxis tenuifolia and Reseda lutea on Enzymatic Antioxidant Defense Systems and Aldose Reductase Activity
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Objectives: The aim of the study was to investigate the effects of methanol extracts from the flowers and leaves of Diplotaxis tenuifolia and Reseda lutea on the activity of AR, CAT, GST, and GPx.
Materials and
Kaempferol triosides from Reseda muricata.
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A flavonoid trioside and its coumaryl ester together with seven known flavonoids and five phenolic acids were isolated from the leaves of Reseda muricata. Their structures were elucidated by spectroscopic methods including UV, FAB MS, 1H, 13C and 2D-NMR, DEPT, HMBC and HMQC experiments. The two
Topical application of solubilized Reseda luteola extract reduces ultraviolet B-induced inflammation in vivo.
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We investigated the skin tolerance and anti-inflammatory potential of a nanoparticular solubilisate of a luteolin-rich Reseda extract (s-RE) in two independent studies in vivo. Reseda luteola extract containing 40% flavonoids was solubilized with polysorbate, resulting in product micelles with a
The photoprotective and antioxidative properties of luteolin are synergistically augmented by tocopherol and ubiquinone.
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Ultraviolet radiation induces DNA damage and oxidative stress which can result in skin inflammation, photoaging, and photocarcinogenesis. The flavonoid luteolin that is present in high amounts in the dyers weld, Reseda luteola, is one of the most potent antioxidative plant metabolites and also has
Characterization of weld (Reseda luteola L.) and spurge flax (Daphne gnidium L.) by high-performance liquid chromatography-diode array detection-mass spectrometry in Arraiolos historical textiles.
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The natural dyes, and dye sources, in two seventeenth century Arraiolos carpets from the National Museum of Machado de Castro were analysed by high-performance liquid chromatography with UV-vis diode array detection (HPLC-DAD) and HPLC-mass spectrometry (LC-MS). Weld (Reseda luteola L.), indigo and
Comparison of extraction methods for the analysis of natural dyes in historical textiles by high-performance liquid chromatography.
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Different methods for the extraction of Dactylopius coccus Costa, Rubia tinctorum L., Isatis tinctoria L., Reseda luteola L., Curcuma longa L. and Cotinus coggygria Scop. from wool fibres are investigated using high-performance liquid chromatography with diode array detector (HPLC-DAD). The
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