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Biotechnological procedure for the elimination of coherent deposits of organic and inorganic origin of materials and works of artistic historical interest
Biotechnological procedure for the elimination of coherent deposits of organic and inorganic origin of materials and works of artistic historical interest
A procedure for the removal of coherent deposits of diverse nature, both organic and inorganic, also overlapping, from works of art and / or wall paintings, characterized in that it comprises the following stages: a) the use of one or more non-spore-forming bacterial strains original, aerobic, selected from: Stenotrophomonas maltophilia UI3E DSM 27225, Cellulomonas sp. THF11E DSM 27224, Pseudomonas koreensis UT30E DSM 27226, immobilized on an inert support of gelling synthetic clay having the formula Na0,7 [(Si8Mg5,5Li0.3) O20 (OH) 4], known by the trade name of laponite (Laponite ® RD Rockwood Additives, CAS No. 53320-86-8); b) applying a uniform layer of said laponite gel containing one or more of said bacterial strains on the surface to be treated and allowing to react for at least 24 hours at room temperature; c) removing the gel from the treated surface; d) the removal of the coherent deposits, reduced and softened by the gel, with a sponge moistened with water and a brush.
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