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Biodegradation of inorganic components in paper documents: Formation of calcium oxalate crystals as a consequence of Aspergillus terreus Thom growth

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Title: Biodegradation of inorganic components in paper documents: Formation of calcium oxalate crystals as a consequence of Aspergillus terreus Thom growth
Authors: Pinzari, Flavia1 flavia.pinzari@beniculturali.it, Zotti, Mirca2, De Mico, Antonella3, Calvini, Paolo4
Source: International Biodeterioration & Biodegradation. Sep2010, Vol. 64 Issue 6, p499-505. 7p.
Subjects: Biodegradation, Inorganic compounds, Paper, Aspergillus, Calcium oxalate, Scanning electron microscopy, Fungal cultures
Abstract: Abstract: A sample set of model graded papers containing known organic and inorganic components was used to culture an Aspergillus terreus strain able to produce acidic metabolites and cellulolytic enzymes. This study set out to document the biogenic formation of calcium oxalate crystals, as a consequence of fungal activity and growth, on a range of paper samples. Scanning electron microscopy and FTIR spectroscopy techniques were employed to achieve this end. Bioleaching processes induced by fungi on carbonate used in the manufacture of paper, together with the capacity of fungi to produce – very rapidly – significant biogenesis of monohydrate and dihydrate calcium oxalate crystals on the surface of papers, were investigated. SEM images of calcium containing paper samples disclosed a very clear difference in the pattern of inorganic material distribution when areas spoiled by fungi and those not affected by fungal growth were compared. In addition, the FTIR spectrum of CaCO3 sized paper clearly demonstrated, following fungal growth, the FTIR absorbance of fungus and calcium oxalate, together with the disappearance of carbonate bands. [Copyright &y& Elsevier]
Copyright of International Biodeterioration & Biodegradation is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 52577413
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  Data: Biodegradation of inorganic components in paper documents: Formation of calcium oxalate crystals as a consequence of Aspergillus terreus Thom growth
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  Data: <searchLink fieldCode="JN" term="%22International+Biodeterioration+%26+Biodegradation%22">International Biodeterioration & Biodegradation</searchLink>. Sep2010, Vol. 64 Issue 6, p499-505. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Biodegradation%22">Biodegradation</searchLink><br /><searchLink fieldCode="DE" term="%22Inorganic+compounds%22">Inorganic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Paper%22">Paper</searchLink><br /><searchLink fieldCode="DE" term="%22Aspergillus%22">Aspergillus</searchLink><br /><searchLink fieldCode="DE" term="%22Calcium+oxalate%22">Calcium oxalate</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Fungal+cultures%22">Fungal cultures</searchLink>
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  Data: Abstract: A sample set of model graded papers containing known organic and inorganic components was used to culture an Aspergillus terreus strain able to produce acidic metabolites and cellulolytic enzymes. This study set out to document the biogenic formation of calcium oxalate crystals, as a consequence of fungal activity and growth, on a range of paper samples. Scanning electron microscopy and FTIR spectroscopy techniques were employed to achieve this end. Bioleaching processes induced by fungi on carbonate used in the manufacture of paper, together with the capacity of fungi to produce – very rapidly – significant biogenesis of monohydrate and dihydrate calcium oxalate crystals on the surface of papers, were investigated. SEM images of calcium containing paper samples disclosed a very clear difference in the pattern of inorganic material distribution when areas spoiled by fungi and those not affected by fungal growth were compared. In addition, the FTIR spectrum of CaCO3 sized paper clearly demonstrated, following fungal growth, the FTIR absorbance of fungus and calcium oxalate, together with the disappearance of carbonate bands. [Copyright &y& Elsevier]
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  Data: <i>Copyright of International Biodeterioration & Biodegradation is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ibiod.2010.06.001
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      – Code: eng
        Text: English
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      – SubjectFull: Biodegradation
        Type: general
      – SubjectFull: Inorganic compounds
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      – SubjectFull: Paper
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      – SubjectFull: Aspergillus
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      – SubjectFull: Calcium oxalate
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      – SubjectFull: Scanning electron microscopy
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      – SubjectFull: Fungal cultures
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      – TitleFull: Biodegradation of inorganic components in paper documents: Formation of calcium oxalate crystals as a consequence of Aspergillus terreus Thom growth
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              Text: Sep2010
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