Towards the identification of characteristic minor components from textiles dyed with weld (Reseda luteola L.) and those dyed with Mexican cochineal (Dactylopius coccus Costa)

Peggie, D.A., Hulme, A.N., McNab, H. and Quye, A. (2008) Towards the identification of characteristic minor components from textiles dyed with weld (Reseda luteola L.) and those dyed with Mexican cochineal (Dactylopius coccus Costa). Microchimica Acta, 162(3-4), pp. 371-380. (doi:10.1007/s00604-007-0866-0)

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Abstract

The identity of a minor flavonoid component observed in extracts of textile samples dyed with weld (Reseda luteola L.) is confirmed as chrysoeriol (3′-O-methylluteolin) by HPLC-PDA analysis. HPLC-PDA, HPLC-MS and NMR techniques have been used to show that the unknown dcII component found in extracts of textiles dyed with Mexican cochineal (Dactylopius coccus Costa) is most probably the 7-C-glycoside of flavokermesic acid. In addition, the unknown dcIV and dcVII components have been shown to be isomeric with carminic acid, most probably differing only in the stereochemistry of the sugar moiety.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Quye, Dr Anita
Authors: Peggie, D.A., Hulme, A.N., McNab, H., and Quye, A.
College/School:College of Arts > School of Culture and Creative Arts > History of Art
Journal Name:Microchimica Acta
ISSN:0026-3672
ISSN (Online):1436-5073
Published Online:10 December 2007

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