Antimicrobial Efficacy of Silver Nanoparticle Gel in Preventing Bacillus-Mediated Biodeterioration of Historical Wall Paintings, in Prince Youssef Kamal Palace, Upper Egypt | ||||
| مجـلة کلية الآثـار بقنا - جامعة جنوب الوادي | ||||
| Volume 19, Issue 1, 2024, Page 58-78 PDF (698.08 K) | ||||
| Document Type: المقالة الأصلية | ||||
| DOI: 10.21608/mkaq.2024.338885.1156 | ||||
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| Authors | ||||
Mahgoub Ahmed  1; Asmaa alhussein Mohamed1; Essam mohamed 2; Wael Bakry Rashidy3
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| 1Faculty of Archaeology, South Valley University, Qena, Egypt. | ||||
| 2faculty of archaeology, archaeological conservation | ||||
| 3Dean of Faculty of Archaeology, South Valley University, Qena, Egypt. | ||||
| Abstract | ||||
| Abstract This study investigates the application of silver nanoparticle (AgNPs) gel as an antimicrobial treatment to preserve wall paintings in the Palace of Prince Youssef Kamal, Upper Egypt. The wall paintings surface, susceptible to microbial deterioration were sampled, and the isolated bacteria underwent treatment with synthesized AgNP gel. The gel was produced through a two-stage process involving sonication and precipitation, yielding nanoparticles with a size range of 10–50 nm, which were confirmed by Transmission Electron Microscopy (TEM). Antimicrobial efficacy was tested through the well diffusion method, to indicate a dose-dependent inhibition of Bacillus growth, with the largest inhibition zone observed at the highest concentration (500 ppm). In addition, the study evaluated the impact of AgNPs gel on pigment stability using colorimetric measurements in the CIELAB color space. Results indicated that while most pigments retained their color, some, particularly yellow ochre and black, exhibited moderate discoloration post-treatment. These findings highlight both the potential and the limitations of AgNPs gel for conservation, suggesting its suitability for microbial control while noting the need for caution regarding pigment sensitivity. | ||||
| Keywords | ||||
| Silver nano particles (AgNPs); Antimicrobial; Biodeterioration; Conservation; wall paintings | ||||
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