The analytical characterisation of flavonoid photodegradation products: a novel approach to identifying natural yellow dyes in ancient textilesIn a previous study new compounds were detected from light aged natural yellow (flavonoid) dyes on alum mordanted wool. We have now developed a novel technique - negative ion electrospray ionisation quadrupole ion trap tandem mass spectrometry (ESI QIT MS) - for futher study and identification of characteristic flavonoid photodegradation...
A preliminary study of light-ageing effects on the analysis of natural flavonoid-dyed wools by PDA HPLC and by DTMSInitial results from high performance liquid chromatographic (HPLC) analysis of accelerated fluorescent tube- and mercury-incandescent lamp-aged mordanted wools dyed with old fustic, weld, quercitron bark, quercetin, dyer's greenweed and onion skins indicate that additional chromophoric and non-chromophoric compounds are generated upon photodegredation. Greater amounts of these componenets were generated after...
Quye, Anita ; Wouters, J ; Boon, J J