Spectroscopic analysis of yellow lakes
Year: 2012
Type: conference-paper
Abstract: The first objective of this study was to acquire an understanding of lake synthesis and thus obtain information on interactions between the organic (natural flavonol) and inorganic constituents (alum, carbonate). Rhamnus berry and yellow lake model compounds based on quercetin as a chromophore were prepared and compared in terms of color and stability with those of historical, reconstituted samples. The extraction process of the natural dyes was optimized by varying the quantity of Rhamnus berries, the solvent, the temperature, the time and the extraction method in order to evaluate the role of the natural dye composition on the lake properties. The samples in solution or under solid state were characterized by various technics: high performance liquid chromatography-photodiode array (HPLC-PDA), UV–Visible absorption fluorescence, IR and Raman spectroscopy. The conditions of preparation were correlated to physico-chemical features. We finally report the extraction of the dyes from a lake or a textile while preserving the glycosidic linkage This procedure will enable an improved analysis to be made of current historical materials.
Source: HAL
Authors: Blanc, Sylvie, Nguyen, Tu Khai Nam, Bourhis, Kevin, Péré, Eve, Vieillescazes, Cathy, Mathe, Carole
Language: English
Subfield: Archeology (arts and humanities)
Field: Arts and Humanities
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W4416398573