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Lignin Quantification of Papyri by TGA—Not a Good Idea
Papyri belong to the oldest writing grounds in history. Their conservation is of the highest importance in preserving our cultural heritage, which is best achieved based on an extensive knowledge of the materials’ constituents to choose a tailored conservation approach. Thermogravimetric Analysis (T...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8305842/ https://www.ncbi.nlm.nih.gov/pubmed/34299657 http://dx.doi.org/10.3390/molecules26144384 |
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author | Bausch, Florian Owusu, Dickson D. Jusner, Paul Rosado, Mario J. Rencoret, Jorge Rosner, Sabine del Río, José C. Rosenau, Thomas Potthast, Antje |
author_facet | Bausch, Florian Owusu, Dickson D. Jusner, Paul Rosado, Mario J. Rencoret, Jorge Rosner, Sabine del Río, José C. Rosenau, Thomas Potthast, Antje |
author_sort | Bausch, Florian |
collection | PubMed |
description | Papyri belong to the oldest writing grounds in history. Their conservation is of the highest importance in preserving our cultural heritage, which is best achieved based on an extensive knowledge of the materials’ constituents to choose a tailored conservation approach. Thermogravimetric Analysis (TGA) has been widely employed to quantify cellulose and lignin in papyrus sheets, yielding reported lignin contents of 25% to 40%. In this work, the TGA method conventionally used for papyrus samples was repeated and compared to other lignin determination approaches (Klason-lignin and acetyl bromide-soluble lignin). TGA can lead to a large overestimation of the lignin content of commercial papyrus sheets (~27%) compared to the other methods (~5%). A similar overestimation of the lignin content was found for the pith and rind of the native papyrus plant. We concluded that the TGA method should, therefore, not be used for lignin quantification. |
format | Online Article Text |
id | pubmed-8305842 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-83058422021-07-25 Lignin Quantification of Papyri by TGA—Not a Good Idea Bausch, Florian Owusu, Dickson D. Jusner, Paul Rosado, Mario J. Rencoret, Jorge Rosner, Sabine del Río, José C. Rosenau, Thomas Potthast, Antje Molecules Article Papyri belong to the oldest writing grounds in history. Their conservation is of the highest importance in preserving our cultural heritage, which is best achieved based on an extensive knowledge of the materials’ constituents to choose a tailored conservation approach. Thermogravimetric Analysis (TGA) has been widely employed to quantify cellulose and lignin in papyrus sheets, yielding reported lignin contents of 25% to 40%. In this work, the TGA method conventionally used for papyrus samples was repeated and compared to other lignin determination approaches (Klason-lignin and acetyl bromide-soluble lignin). TGA can lead to a large overestimation of the lignin content of commercial papyrus sheets (~27%) compared to the other methods (~5%). A similar overestimation of the lignin content was found for the pith and rind of the native papyrus plant. We concluded that the TGA method should, therefore, not be used for lignin quantification. MDPI 2021-07-20 /pmc/articles/PMC8305842/ /pubmed/34299657 http://dx.doi.org/10.3390/molecules26144384 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Bausch, Florian Owusu, Dickson D. Jusner, Paul Rosado, Mario J. Rencoret, Jorge Rosner, Sabine del Río, José C. Rosenau, Thomas Potthast, Antje Lignin Quantification of Papyri by TGA—Not a Good Idea |
title | Lignin Quantification of Papyri by TGA—Not a Good Idea |
title_full | Lignin Quantification of Papyri by TGA—Not a Good Idea |
title_fullStr | Lignin Quantification of Papyri by TGA—Not a Good Idea |
title_full_unstemmed | Lignin Quantification of Papyri by TGA—Not a Good Idea |
title_short | Lignin Quantification of Papyri by TGA—Not a Good Idea |
title_sort | lignin quantification of papyri by tga—not a good idea |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8305842/ https://www.ncbi.nlm.nih.gov/pubmed/34299657 http://dx.doi.org/10.3390/molecules26144384 |
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