Abstract
Spectrum of colors from reseda luteola and other natural yellow dyes
Highlights
Yellow dyes have always been used from ancient times and have been a color of marking festivity
In our quest for a stable yellow dye we started exploring all the possible sources of yellow natural dyes ranging from Curcuma rhizome, Eucalyptus barck Super Critical Fluid Extract (SCFE), Gaillardia flower, Thevetia peruviana flower, Tegetus flower, Punica granatum fruit epicarp, Cassia fistula flower, Cosmos sulphuerus flower, Carthamus flower and Reseda luteola flower, stem and leaves extracts
Spectrum of colors from reseda luteola and other natural yellow dyes were extracted in methanol, while Reseda dye sample was weighed separately (0.1gm) in 1000 ml of methanol and the sample is diluted to 100 times, 1μL of this diluted prepared solution was injected to the C-18 reverse phase column and eluted through column
Summary
Yellow dyes have always been used from ancient times and have been a color of marking festivity. (weld) flavonoids and quantification of the main compounds responsible for the yellow color This method was applied to a large number of wild Portuguese welds to evaluate its potential application as dyestuff for textile factories, as a substitute for the synthetic dyes currently used. Spectrum of colors from reseda luteola and other natural yellow dyes were extracted in methanol, while Reseda dye sample was weighed separately (0.1gm) in 1000 ml of methanol and the sample is diluted to 100 times, 1μL of this diluted prepared solution was injected to the C-18 reverse phase column and eluted through column. The parameters of this assay were made to be such that a clean peak of the both the samples are observed from the chromatograph
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