Table 3 HPLC analysis results
Sample | KIK/IRPA code | Extr | Substances identified | λ (nm) |
|---|---|---|---|---|
Tapestry background weave (Y5) | 14,808/01 | EtAc | Traces of alizarin | 255 |
Embroidery background fabric (Y2) | 14,808/02 | EtAc | 61 ellagic acid, 12 6-monobromoindigotin, 11 6,6’-dibromoindigotin, 2 indigotin, 13 U1* (rt16,1 min, 405 nm), 3 U2 (rt9,3 min, 390 nm), 1 U3 (rt19,3 min, 395 nm) 41 6-monobromoindigotin, 37 6,6’-dibromoindigotin, 11 indigotin, 11 isatin | 255 288 |
Support fabric of Y1, coated | 14,808/03 | EtAc | 98 ellagic acid, 2 U4 (rt20,1Â min, 455Â nm) U4 (rt20,1Â min, 455Â nm) and several unknown compounds with maximum absorbance of 450/455Â nm | 255 450 |