Publicomos

Réf.

43193

Type

article

Titre

Onsite advanced biocleaning system on ancient wall paintings using new agar-gauze bacteria gel

Langues

English

Auteurs

Ranalli, Giancarlo / Zanardini, Elisabetta / Rampazzi, Laura / Corti, Cristina / Andreotti, Alessia / Colombini, Maria Perla / Bosch-Roig, Pilar / Lustrato, Giuseppe / Giantomassi, Carlo / Zari, Donatella / Virilli, Paolo

Maison d'édition

Wiley

Date

2019

Pagination de section

1785-1796

Titre de la revue

Journal of Applied Microbiology

Vol. & n°

v. 126

ISSN

1365-2672

Mots-clés

theory of conservation / wall paintings / movable cultural property / biochemical analysis / chemical analysis / causes of deterioration / bacteria / biotechnology / cleaning / infrared analysis

Pays mentionnés

Holy See / Italy

Monuments et sites

Vatican Museums (Rome, Italy) / Cathedral Cupola (Pisa, Italy)

N° Patrimoine mondial

286 / 395 / 91

Résumé en anglais

Aims: In this study the results of the use of a new agar-gauze biogel system activated by viable bacterial cells applied on altered wall-paintings are reported.Methods and Results: Biocleaning using agar biogel and agar-gauze biogel systems was performed onsite by direct application onto altered wall-painting artwork surfaces (25-1,000 cm2). The treatments were performed for the restoration of two original Italian sites: i) at the Vatican Museums, Cristo che salva Pietro dalle acque - La Navicella wall-painting by Giovanni Lanfranco (1627-1628) and ii) at Pisa Cathedral Cupola, Incarnato wall-painting by Orazio Riminaldi (1593-1630) and his brother (Girolamo Riminaldi). The novelty of this study is the use of Pseudomonas stutzeri A29 viable cells using an advanced agar-gauze biogel system and that the bioapplications required short contact-times of between 3-12 hours. The ancient artworks were altered by lipid and protein residues from past restoration as confirmed by the Py-GC/MS and FTIR data. Assessment was made on the effectiveness of the biological treatment and general considerations were discussed.
Conclusions: The short contact-time of the bioapplications using advanced agar-gauze gel activated with P. stutzeri viable cells makes this biotechnology promising as an alternative method to the traditional onsite cleaning techniques currently in use for altered ancient wall-paintings.Significance and Impact of the Study. In this study, we report the biocleaning of altered materials located in vertical and vaulted areas using agar-gauze biogel and short application times for the first time. These findings are of great significance for future restoration activities, being crucial for determining best preservation strategies in this field.

URL

https://sfamjournals.onlinelibrary.wiley.com/journal/13652672

Document joint

Onsite advanced biocleaning system on ancient wall paintings using new agar-gauze bacteria gel.pdf

Licence

Creative Commons Attribution-Non Commercial-No Derivatives (BY-NC-ND)