cochineal-based pigment
Iran
18th Century
Source: Koochakzaei et al. Heritage Science (2022) 10:30
Recipe Details
Ingredients
cochineal
Preparation Steps
Identified as an organic dye of insect origin. Phosphorus presence indicates metabolic processes of insects rather than plants (p. 6).
Original Recipe Text
Identified as an organic dye of insect origin. Phosphorus presence indicates metabolic processes of insects rather than plants (p. 6).
Evidence
"Raman spectrum acquired from this pigment at 532 nm excitation exhibit indicator signals at 1643, 1476, 1316, 1220 and 1104 cm−1, which match the main Raman bands of cochineal-based pigments."
Remarks
In UVFC, the ink appeared green, which is characteristic of cochineal when processed with UVL and IR (p. 12). Used in parts of the Quranic text (p. 2).
Scientific Analysis
Analytical Techniques
ultraviolet false color (UVFC)
SEM-EDS
Raman
infrared false color (IRFC)
ultraviolet-induced visible luminescence (UVL)
Certainty Level
Confirmed
Instrumentally Verified
Verified
Metadata
Material Type
ink
ColorRed
RegionIran
Approx. Year1750
Source Information
AuthorKoochakzaei et al. Heritage Science
CollectionKashan city, Iran
Language
N/A
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