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March of the Pigments: Color History, Science and Impact
Published in Ambix, 2023
Jo Kirby
To take another example, the effect of the variable proportion of yellow flavokermesic acid in kermes and Porphyrophora polonica on the colour obtained is a valid point, but there is no evidence that this was ever viewed as a disadvantage. The dyeing quality of the insects was assessed before purchase, so poor quality insects would not be bought. Kermes was rich enough in dye content to be one of the most valuable wool dyes in medieval and Renaissance Europe, although both kermes and Porphyrophora dyes could not compete with the superior dyeing power of cochineal in the long run.