caa a22 4500 37893581X CHVBK 20180305123640.0 cr unu---uuuuu 161128e200412 xx s 000 0 eng 10.1515/REST.2004.267 doi (NATIONALLICENCE)gruyter-10.1515/REST.2004.267 Enzymes in Solvent Conditioned Poultices for the Removal of Starch-based Adhesives from Iron Gall Ink Corroded Manuscripts [Elektronische Daten] [Dirk Schönbohm, Agnes Blüher, Gerhard Banik] Enzymes présentes dans les compresses contenant des solvants afin de retirer les colles à base d'amidon des manuscrits corrodés à l'encre gallique Semi-aqueous amylase poulticing methods were tested with the objective to detach silking from archival documents weakened by iron gall ink corrosion. Originally amylose gels on the basis of methylcellulose as gel forming agent containing methyl cellosolve were used to remove wheat starch paste adhesives modified by addition of aluminiumsulfate from test artifacts that have been restrenthened according to the traditional siliking technique. These experiments led to the development of polyethylenoxide gels in which the methyl cellosolve and amylase were incorporated. A system was developed by which a fully aqueous amylase gel was used to detach silking from iron gall ink test artifacts protected from the contact with water by having been impregnated with ethylene glycol monomethylether (EGMM) - water blends. The migration of ink and degradation products could successfully be prevented when the artifact to be poulticed was firstly impregnated with the organic solvent. The method was sucessfully used on original artifacts. © 2004 K. G. Saur Verlag GmbH, Ortlerstr. 8, D-81373 München Schönbohm Dirk Dipl.-Rest., Frankfurter Tor 9, 10 243 Berlin, Germany, Tel: ++49 +3029047754, Fax: ++49 +3029047750. E-mail: dsrestaurierung@t-online.de aut Blüher Agnes Schweizerische Landesbibliothek, Hallwylstraße 15, CH- 3003 Bern, Switzerland, Tel.: ++41 +31 +322 2359, Fax: ++41 +31 322 8463. E-mail: agnes.blueher@slb.admin.ch, http://www.snl.ch aut Banik Gerhard Staatliche Akademie der Bildenden Künste, Höhenstraße 16, 70736 Fellbach, Germany, Tel: ++49 +711 6646 38-0, Fax: ++49 +711 58 64 53. E-mail: sekretariat@sabk.de, www.sabk.de <http://www.sabk.de> aut Restaurator Walter de Gruyter GmbH & Co. KG 25/4(2004-12), 267-280 0034-5806 25:4<267 2004 25 REST https://doi.org/10.1515/REST.2004.267 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/REST.2004.267 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schönbohm Dirk Dipl.-Rest., Frankfurter Tor 9, 10 243 Berlin, Germany, Tel: ++49 +3029047754, Fax: ++49 +3029047750. E-mail: dsrestaurierung@t-online.de aut NATIONALLICENCE 700 1- Blüher Agnes Schweizerische Landesbibliothek, Hallwylstraße 15, CH- 3003 Bern, Switzerland, Tel.: ++41 +31 +322 2359, Fax: ++41 +31 322 8463. E-mail: agnes.blueher@slb.admin.ch, http://www.snl.ch aut NATIONALLICENCE 700 1- Banik Gerhard Staatliche Akademie der Bildenden Künste, Höhenstraße 16, 70736 Fellbach, Germany, Tel: ++49 +711 6646 38-0, Fax: ++49 +711 58 64 53. E-mail: sekretariat@sabk.de, www.sabk.de <http://www.sabk.de> aut NATIONALLICENCE 773 0- Restaurator Walter de Gruyter GmbH & Co. KG 25/4(2004-12), 267-280 0034-5806 25:4<267 2004 25 REST CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence SWISSBIB 082557446 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter