NMR spectroscopic study of the Murex trunculus dyeing process

Rina C. Hoffman · Reut C. Zilber

11 citations0/0 files storedMagnetic Resonance in Chemistry

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Cultural Heritage Materials Analysis Advanced NMR Techniques and Applications Dyeing and Modifying Textile Fibers

Abstract

It is widely accepted that indigo dyes derived from Murex trunculus were used to produce the biblical dyes tekhelet and argaman. We describe a method of following the debromination of natural leucoindigos and their binding to wool using NMR spectroscopy. Debromination is observed prior to reaction with the wool and prior to oxidation. Binding to the wool is shown to occur prior to oxidation. NMR allows the dyeing process to be followed. This, in principle, could be used to correct problems during dyeing that would increase the reliability of the process.

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References

2007Archaeo-chemical analysis of Royal Purple on a Darius I stone jar 1994HPLC analysis of the natural scale insect, madder and indigoid dyes 2000Indigo-reducing Isolated from a Variety of Sources, including a 10th-Century Viking Dye Vat 1986Purple Dyes Made from Shellfish in Antiquity

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2013Positive and negative‐mode laser desorption/ionization‐mass spectrometry (LDI‐MS) for the detection of indigoids in archaeological purple

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