Research in Nature Communications suggests artists like Leonardo da Vinci,Sandro Botticelli,and Rembrandt may have mixed egg yolk into oil paintings. This challenges idea that protein residues in classic art were mere dirt.
Ophélie Ranquet,researcher at Karlsruhe Institute of Technology in Germany,emphasized these findings. “There are very few written sources about this and no scientific work has been done before to investigate the subject in such depth,” she noted. Study shows even small amounts of egg yolk can alter oil paint's properties,improving durability and appearance .
Oil paint,originating in Central Asia during seventh century,offered artists vibrant colors,longer working times compared to tempera used by ancient Egyptians. But it had issues—darkening,light damage. Old Masters likely experimented with egg yolk,a familiar ingredient,to refine their paint .
In experiments,researchers recreated paint-making with egg yolk,distilled water,linseed oil,pigments like lead white,ultramarine blue. Ranquet said egg yolk might enhance paint's longevity,antioxidants slowing oxidation. Interaction between oil,pigment,protein affects viscosity,behavior,makes it easier to apply,more humidity resistant.
Egg yolk's impact visible in da Vinci's “Madonna of the Carnation,” with wrinkling on Mary and child's faces. Ranquet explained oil paint dries surface inward,causing wrinkling. Study suggests egg yolk could've smoothed this,maintaining consistent pigment application without sacrificing quality.
Botticelli’s “The Lamentation Over the Dead Christ” also analyzed. Though mainly tempera,background has oil paint,proteins suggest artists may have added egg yolk. Ranquet's research might shift view on Old Masters' techniques.
Maria Perla Colombini,professor of analytical chemistry at University of Pisa,praised study for its innovation. She said it deepens understanding of historical painting techniques,materials. This aids in preserving artworks,enriches art history narrative .
With growing interest in classical art's technical side,Ranquet hopes study sparks more research into Old Masters' materials,methods. Findings reveal complexity,ingenuity behind masterpieces that still captivate…
