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2019
Journal article
Historical formulations of lake pigments and dyes derived from lac: A study of compositional variability
“Lac” is a term referring to a pink-red-purple organic colourant derived from an insect and used as a lake pigment or a dye. Although historical sources indicate extensive usage, findings in historical samples remain scarce and are based on the detection of laccaic acids A and B, which are the...lac; shellac; historical recipes; photo-induced luminescence; HPLC-MSPCA