Glutathione Enhanced Anthraquinone Production in Advntitious Root Cultures of Rubia tinctorum L.

Roots of Rubia tinctorum and Morinda citrifolici are used to study the role of cellular differentiation in anthraquinone biosynthesis. Root cultures of Rubia and Morinda transformed with Agrobacterium rhizo-

Enhanced production of valerenic acids and valepotriates by in vitro cultures of Valeriana officinalis L.

Valerian (Valeriana officinalis L.) is an important medicinal plant that is widely exploited for its roots and rhizomes which contain valepotriates and valerenic acids (with putative pharmacological activities). Thus root proliferation of valerian is very important. The aim of this study was to establish a practical tissue culture method for rapid and large-scale induction of V. officinalis L. ...

Antispasmodic Effect of Aqueous Extract of Rubia tinctorum L. Roots on Rodents

Article history Received 11 June 2011 Revised 24 July 2011 Accepted 8 December 2011 Available online 30 April 2012 Rubia tinctorum L. (Rubiaceae) root is traditionally used in Morocco for treating the gastro-intestinal diseases. The aim of the present study was to assess the antispasmodic effects of the aqueous extract of this root plant (AR) on rodents.The effect of the AR on spontaneous contr...

Isolation and extraction of ruberythric acid from Rubia tinctorum L. and crystal structure elucidation.

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...

Isolation and extraction of lucidin primeveroside from Rubia tinctorum L. and crystal structure elucidation.

Madder (Rubia tinctorum L.) has been used as a dye for over 2000 years with alizarin and purpurin the major natural dyes analysed from extractions undertaken. The use of ethanol as the solvent in the extraction process produced an extract that yielded four anthraquinone compounds lucidin primeveroside, ruberythric acid, alizarin and lucidin-ω-ethyl ether. Gravitational separation of the extract...