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This paper focuses on the removal of acrylic polymer layers from the surfaces of mural paintings, as one of the serious problems faced by conservators. Nanostructured fluids containing water is a great solution for the immiscible or partially miscible polymer with water. The de-wetting of the polymer layer is usually an essential step to achieve efficient removal. EAPC-XYL system was often used for the removal of paraloid B72 but unfortunately, it has an effect on the noble patina of the pigments. The addition of Pseudomonas stutzeri as a source of lipase enzyme increases the efficiency of the EAPC-XYL in short time which helps in removing of the acrylic polymers without affecting the pigments.

MODIFICATION OF EAPC-XYL BY PSEUDOMONAS LIPASES BACTERIA TO REMOVE ACRYLIC FROM THE MURAL OIL PAINTINGS