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Enzymatic degradation of mould stains on paper analysed by colorimetry and DRIFT-IR spectroscopy

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dc.contributor.author Tavzes, Crtomir en
dc.contributor.author Silc, Franc en
dc.contributor.author Kladnik, Andrej en
dc.contributor.author Fackler, Karin en
dc.contributor.author Messner, Kurt en
dc.contributor.author Pohleven, Franc en
dc.contributor.author Koestler, Robert J. en
dc.date.accessioned 2018-06-26T14:21:31Z
dc.date.available 2018-06-26T14:21:31Z
dc.date.issued 2009
dc.identifier.citation Tavzes, Crtomir, Silc, Franc, Kladnik, Andrej, Fackler, Karin, Messner, Kurt, Pohleven, Franc, and Koestler, Robert J. 2009. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F35840">Enzymatic degradation of mould stains on paper analysed by colorimetry and DRIFT-IR spectroscopy</a>." <em>International Biodeterioration & Biodegradation</em>. 63 (7):873&ndash;879. <a href="https://doi.org/10.1016/j.ibiod.2009.07.001">https://doi.org/10.1016/j.ibiod.2009.07.001</a> en
dc.identifier.issn 0964-8305
dc.description.abstract Melanin is chemically and by physical characteristics very similar to lignin, a major constituent of wood, and therefore ligninolytic enzymes of white-rot fungi were tested for their ability to selectively degrade melanin. Melanin degradation was studied both in liquid suspensions of melanin and on melaninised paper samples. Liquid suspension samples were tested for changes in their chemical composition (appearance and relative representation of functional groups and chemical bonds) with FTIR spectrometry. Changes in colour of melaninised paper samples were investigated with a colorimeter. Effectiveness of the treatment (bleaching) was determined as a change in lightness ([Delta]L). Melanin was oxidised in the liquid suspensions, and the intensity of modification varied depending on the procedure employed. The most pronounced changes in melanin were observed in laccase-1-hydroxybenzotriazole (HBT) treatment at heightened air pressure. The most prominent discoloration of the melaninised paper samples (and no visually detectable damage to the integrity of the paper) was, like in the case of the liquid suspensions, observed after laccase-HBT treatment. en
dc.relation.ispartof International Biodeterioration & Biodegradation en
dc.title Enzymatic degradation of mould stains on paper analysed by colorimetry and DRIFT-IR spectroscopy en
dc.type Journal Article en
dc.identifier.srbnumber 80181
dc.identifier.doi 10.1016/j.ibiod.2009.07.001
rft.jtitle International Biodeterioration & Biodegradation
rft.volume 63
rft.issue 7
rft.spage 873
rft.epage 879
dc.description.SIUnit Colorimetry en
dc.description.SIUnit FTIR en
dc.description.SIUnit MCI en
dc.citation.spage 873
dc.citation.epage 879

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