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Figure 3 | Heritage Science

Figure 3

From: Analysis of natural dyes and metal threads used in 16th -18th century Persian/Safavid and Indian/Mughal velvets by HPLC-PDA and SEM-EDS to investigate the system to differentiate velvets of these two cultures

Figure 3

Chromatograms and UV-visible spectra of selected red pile samples. Chromatograms at 420 nm of HCl extracts from red samples, from a reference sample dyed with American cochineal, and of laccaic acids standard. 420 nm was used to construct the chromatograms to indicate the peak of dcII component of cochineal (A). UV-visible spectra of the peak at 14.4 minutes (B) and 17.2 minutes (C) of the chromatogram of the velvet acc. no. 1978.60 as an example, and UV-visible spectra of carminic acid standard (D) and laccaic acid A standard (E).

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