Malalanirina Sylvia Rakotonirainy

Malalanirina Sylvia Rakotonirainy
Center for Research on the Conservation of Collections | CRCC · Biodeterioration and environment

Docteur en biologie

About

34
Publications
9,943
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544
Citations
Citations since 2017
5 Research Items
207 Citations
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
Additional affiliations
September 1992 - present
Center for Research on the Conservation of Collections
Center for Research on the Conservation of Collections
Position
  • Responsable du Pôle biodéterioration et environnement

Publications

Publications (34)
Article
Foxing is a special case of fungal deterioration on paper, recognizable by spots of yellowish to brownish colours. Measuring the carboxymethyl cellulase activity (CMCase) by 3,5-dinitrosalicylic method was used to assess the presence of active cellulase inside foxing stains. This was done on foxed paper samples and compared with five fungal strains...
Chapter
Full-text available
Le foxing bio­lo­gi­que, c’est-à-dire la pré­sence sur le papier de taches de cou­leur jau­nâ­tre à rousse, est un phé­no­mène cou­rant. Si la pré­sence dans ces taches d’éléments fon­gi­ques est avérée, leur rôle dans l’appa­ri­tion du phé­no­mène reste très mal connu. À l’ini­tia­tive du centre de recher­che sur la conser­va­tion, les Archives na...
Article
Le foxing biologique, c’est-à-dire la présence sur le papier de taches de couleur jaunâtre à rousse, est un phénomène courant. Si la présence dans ces taches d’éléments fongiques est avérée, leur rôle dans l’apparition du phénomène reste très mal connu. À l’initiative du centre de recherche sur la conservation, les Archives nationales ont sollicité...
Article
Full-text available
The biocontamination of graphic documents is a real and major risk for collections because the damages generated are irreversible. If bacteria can only be found after water related disasters, molds are more common, some species being able to develop at relatively low water activities (0.62-0.80). To detect the presence of micro-organisms and especi...
Article
The Archives françaises du film ([AFF] French Film Archives) of the Centre national du cinéma et de l’image animée (National Center for Cinema and the Moving image [CNC]) is regularly facing problems of molds growth on cinematographic films enclosed in plastic and metal containers. This study is conducted through comprehensive microbiological testi...
Article
Full-text available
An adenosine triphosphate (ATP) bioluminescence-based protocol was tested to assess the viability of fungal species in old documents damaged by foxing. Foxing appears as scattered yellow brownish-red stains, damaging the aesthetics of documents and their long-term readability. In the field of cultural heritage conservation, the debate over the mech...
Conference Paper
Full-text available
Fungi that damage documents in archives may harm workers’ health, depending on which mold species are inhaled, the concentrations of fungal species inhaled, and individual factors. Our aim was to identify and quantify fungi in archives and to investigate possible links with the symptoms experienced by workers. In ten French archives, air, surfaces...
Article
Full-text available
Abstract Fungi that damage documents in archives may harm workers’ health, depending on which mold species are inhaled, the concentrations of fungal species inhaled, and individual factors. Our aim was to identify and quantify fungi in archives and to investigate possible links with the symptoms experienced by workers. Ten French archives were samp...
Article
Full-text available
The involvement of fungi in the formation of foxing on the paper is not yet clear. Their presence, concentrated in the colored areas is long established but the identity of all species is unknown because of the difficulty of using the traditional methods of morphological identification. Based on the analysis of a book of the 19th century greatly da...
Article
Full-text available
Fungal contamination is a major cause of deterioration in libraries and archives. Curators and conservators increasingly need rapid microbiological analyses. This paper presents a rapid detection method for the fungal contaminants on documents. A previous study showed that the calculation of energy charge, using bioluminescence ATP assays, provides...
Article
Full-text available
A new process using aminoalkylalkoxysilanes (AAAS) was developed recently for paper and book mass deacidification. This process is entirely novel in that, besides deacidifying, it also improves the mechanical properties of paper. In the present article, the properties of inhibition of fungal growth of the treated papers are investigated. It was fou...
Article
Full-text available
L a détérioration des documents par des moisissures est l'un des problè-mes récurrents dans les magasins d'archives et de bibliothèques [1]. La pré-sence de ces micro-organismes est sou-vent identifiable par des taches colorées ou des particules ressemblant à la poussière. A part les aspects esthétiques, la contamination par les moisissures peut en...
Article
Full-text available
L a détérioration des documents par des moisissures est l'un des problè-mes récurrents dans les magasins d'archives et de bibliothèques [1]. La pré-sence de ces micro-organismes est sou-vent identifiable par des taches colorées ou des particules ressemblant à la poussière. A part les aspects esthétiques, la contamination par les moisissures peut en...
Article
Full-text available
The brownish spots known as foxing, commonly found on old paper artefacts contain sometimes structures, which look like filamentous fungi. Attempts to grow these structures in vitro have been always unsuccessful so far. In order to study the role of these biological elements in paper decay, it is essential to identify them. This study is aimed at t...
Article
Full-text available
A new conservation process was developed for archaeological iron-wood artefacts. Metal part protection was achieved by adding a corrosion inhibitor (Hostacor IT®) in the polyethylene glycol (PEG) soaking solutions. Nevertheless, a significant microbiological growth was observed in the baths and around the objects. From the different soaking solutio...
Article
Full-text available
The effect of linalool vapours on silver-gelatine photographs and bookbinding leathers. Linalool is a compound found in essential oils. Our previous study has shown the antifungal activity of vapours of linalool and its mild effects on paper. This present study shows the effects of linalool on silver photographs and on leathers. Even at low concent...
Article
Full-text available
The vapours of nine essential oils and five of their major constituents were investigated for their antifungal activity against a range of mould species commonly found on library and archival materials. The different compounds were preliminarily screened by a microatmosphere method. The inhibitory activities of vapour phase of essential oils of arm...
Article
Full-text available
Mould contamination in the indoor climate has been recognised in recent years as a major concern. In addition to damaging works of art, moulds also can be health hazards. Nowadays, the conventional method to detect and identify such micro-organisms is to put them in culture. Unfortunately, such a method is laborious and time-consuming. Bioluminesce...
Article
Full-text available
Filamentous fungi are able to damage and even destroy archival and library materials. Nowadays the conventional method for detecting such micro-organisms is to put them in cultures but such methods are laborious and time-consuming. ATP methodology has been widely applied in other domains and its success on bacteria and yeast has been demonstrated....
Article
Full-text available
The effect of different parameters on the growth of some microfungi strains was evaluated. pH, alkaline reserve and the type of paper have no significant influence on the fungal growth. Actually, the observed differences depended only on the intrinsic characteristics of each mould species.
Article
The conservation and restoration of archaeological objects is based on a 5 step procedure which has the main objectives on one hand to (re)-discover the original surface of the object and on the other hand to preserve its details of fabrication. These protocols are well known when applied on waterlogged woods or iron objects separately, but they ar...
Article
Full-text available
When a fungal contamination occurs in archives or libraries, the disinfection of the contaminated documents must be generally supplemented by an aerial disinfection of the storerooms, once emptied of their contents. In France, for some years, thermal fogging with an alkyl dimethylbenzylammonium chloride solution has been employed successfully for t...
Data
Full-text available
Recommandations sur la biocontamination et son évaluation. Direction du livre et de la lecture
Article
Full-text available
A ribosomal RNA sequencing technique was used to sequence partially two rapidly evolving domains of the 28S-like rRNA molecule from 42 isolates of Metarhizium. Phylogenetic analysis underlined the separation between M. flavoviride and M. anisopliae and the distinction of M. anisopliae var. majus strains was confirmed. The divergence of two so-calle...
Article
Full-text available
Five strains of Tolypocladium cylindrosporum, one strain of Tolypocladium extinguens, and nine strains of Beauveria bassiana were analyzed using a rapid rRNA sequencing technique. The sequences of two highly variable domains (D1 and D2) located at the 5' end of the 28S-like rRNA molecule were determined. The phylogenetic tree computed from the abso...
Thesis
L'étude de la variabilité génétique de quelques genres et espèces d,Hyphomycètes entomopathogènes et de leurs liens phylétiques, a été entreprise par l’analyse comparative des séquences d'ARNr 28S ainsi que par Inanalysé de quelques systèmes enzymatiques.Différentes méthodes ont été utilisées pour construire les arbres : Fitch, parcimonie et Neighb...

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Projects

Projects (2)
Project
Seek to understand the relationship between the presence of mold and foxing stains. Are molds opportunistic or have an active role in the formation of the phenomenon? More than 20% of the documents in the collections are affected by foxing. It is therefore important to properly characterize the phenomenon in order to put in place adequate preventive measures.