Characterization of Colouring Matters by HPLC-DAD and Colour Measurements, Preparation of Lake Pigments with Ararat kermes (Porphyrophora hameli Brand)

The lake pigments aluminium, tin, iron, aluminium-calcium, tin-calcium and iron-calcium ararat kermes were obtained by means of kal(so4)2.12h2o (alum), sncl2.2h2o, feso4.7h2o and ca(no3)2.4h2o solutions from ararat kermes (porphyrophora hameli brand) dye insects. a reversed phase high performance liquid chromatography (hplc) with diode-array detection (dad) method was utilized for the identification of red anthraquinone dyes present in the lake pigments. the extraction of dyes from the lake pigments was carried out with hcl / meoh / h2o (2:1:1; v/v/v) solution. cielab values of the lake pigments were measured.