the medicinal part of rubia tinctorum is the dried root. the small yellowishgreen flowers are in loose, leafy, long-peduncled terminal or auxiliary cymes. the margin of the calyx is indistinct, 4- to 5-sectioned and has a tip that is curved inward. there are five stamens and an inferior ovary. the fruit is a black, pea-sized glabrous, smooth drupe containing two seeds. the perennial plant grows...

There is a continuous search for green and sustainable materials processes in textile dyeing finishing. In the current study, wool yarns were grafted with Sodium Alginate-Silver nanoparticles (SA-Ag NPs) consecutively dyed Cochineal or Madder. The weight gain of samples was measured to find optimized SA-Ag NPs initial concentration, Scanning Electron Microscopy (SEM) used study their surface mo...

Madder (Rubina tinctorum L.) is mainly cultivated in central part of I.R. of Iran that is an arid and desert area with scarce and saline water resources. Its root is used as herbal medicine and food additives and its shoot (top) is used as forage crop. However, little is known about its salinity tolerance and soil water limits for growth. The objectives of the present study were to investigate ...

To date, it is still not possible to obtain exhaustive information about organic materials in cultural heritage without sampling. Nonetheless, when studying unique objects with invaluable artistic or historical significance, preserving their integrity a priority. In particular, dye identification of significant interest for history and conservation research, but hindered by analytes’ low concen...

Madder (Rubia tinctorum L.) has been exploited as a dye throughout history. The roots of the plant are very rich in the highly coloured glycosidic compounds ruberythric acid and lucidin primeveroside, alongside the corresponding aglycons which can be readily formed by deglycosylation, particularly during extraction. Supported by (1)H and (13)C NMR data, the conclusive X-ray crystal structure of...