An investigation into the removal of starch paste adhesives from historical textiles by using the enzyme α-amylase

Ahmed, HE; Kolisis, FN

dc.contributor.author	Ahmed, HE	en
dc.contributor.author	Kolisis, FN	en
dc.date.accessioned	2014-03-01T01:35:12Z
dc.date.available	2014-03-01T01:35:12Z
dc.date.issued	2011	en
dc.identifier.issn	1296-2074	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20984
dc.subject	Activity	en
dc.subject	Ageing	en
dc.subject	Conservation	en
dc.subject	Enzyme	en
dc.subject	Investigation	en
dc.subject	Layers	en
dc.subject	Starch	en
dc.subject	Textiles	en
dc.subject	Treatment	en
dc.subject.classification	Archaeology	en
dc.subject.classification	Art	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.classification	Spectroscopy	en
dc.title	An investigation into the removal of starch paste adhesives from historical textiles by using the enzyme α-amylase	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.culher.2010.08.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.culher.2010.08.001	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The alpha-amylase enzyme has been reported during the last decade to be used for removal of the excess starch adhesive paste, which is usually used to fix textiles on paper, textiles, wood panels, or other rigid support materials. The final aim of this work was the application of alpha-amylase in order to remove the old starch from historical textiles in an attempt to conserve them under mild conditions. An extensive study was undertaken using various types of textiles in order to identify the optimum condition for the use of the enzyme, in relation to time, concentration, temperature and pH, before any other attempt. The first step was to simulate the textile ageing. The fabrics were coated with starch paste adhesive, and then a process of artificial thermal ageing was made on samples for different periods of time. After that the enzyme was applied to the samples, at different concentrations and at different intervals. This study also presents interesting results concerning the effect of the enzymatic treatment on the mechanical and optical parameters of linen, silk and cotton, dyed with madder or turmeric dye mordanted with CuSO4 or ferric citrate. Finally, the removal of enzymatic residues from textiles after the treatment has been studied. The application section has been fulfilled by using the whole process in a piece of a historical carpet from fabric adhered with starch. This piece of carpet is in the museum of the Faculty of Applied Arts, Helwan University in Egypt. (C) 2011 Published by Elsevier Masson SAS.	en
heal.publisher	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER	en
heal.journalName	Journal of Cultural Heritage	en
dc.identifier.doi	10.1016/j.culher.2010.08.001	en
dc.identifier.isi	ISI:000290471000008	en
dc.identifier.volume	12	en
dc.identifier.issue	2	en
dc.identifier.spage	169	en
dc.identifier.epage	179	en