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Identification of alkyl guaiacyl dehydroabietates as novel markers of wood tar from Pinaceae in archaeological samples.

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Title: Identification of alkyl guaiacyl dehydroabietates as novel markers of wood tar from Pinaceae in archaeological samples.
Authors: Bailly, Lucile1 bailly.lucile@orange.fr, Adam, Pierre1 padam@unistra.fr, Charrié, Armelle2, Connan, Jacques3
Source: Organic Geochemistry. Oct2016, Vol. 100, p80-88. 9p.
Subjects: Alkyl compounds, Biomarkers, Wood tar, Pinaceae, Archaeology
Abstract: Resinous material from conifers from the Pinaceae family is frequently found in an archaeological context. The material was used, notably, as waterproofing agent, as adhesive or for the caulking of boats. Two main types of material can be distinguished: resin, the exudate of conifer trees, and wood tar obtained by dry distillation of wood. Molecular investigation of such material aims, notably, at developing new molecular tools for the determination of the biological and geographical origin or of the manufacturing techniques, and for the discrimination between resin and wood tar. In this context, we report the identification by synthesis of alkyl guaiacyl dehydroabietates, which occur in a series of recent and archaeological conifer wood tar samples from shipwrecks and Gallo-Roman tar preparation sites. They most likely result from the reaction of dehydroabietic acid and alkyl guaiacols, the latter being typical wood pyrolysis products formed during the preparation of wood tar. Alkyl guaiacyl dehydroabietates are therefore proposed to be specific molecular markers for conifer wood tar, allowing a clear molecular distinction between this material and resin to be made. They are also more resistant to the alteration undergone by archaeological samples than other compounds previously proposed as markers of conifer wood tar such as anhydrosugars or alkyl guaiacols. [ABSTRACT FROM AUTHOR]
Copyright of Organic Geochemistry is the property of Pergamon Press - An Imprint of Elsevier Science 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.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Identification of alkyl guaiacyl dehydroabietates as novel markers of wood tar from Pinaceae in archaeological samples.
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  Data: <searchLink fieldCode="AR" term="%22Bailly%2C+Lucile%22">Bailly, Lucile</searchLink><relatesTo>1</relatesTo><i> bailly.lucile@orange.fr</i><br /><searchLink fieldCode="AR" term="%22Adam%2C+Pierre%22">Adam, Pierre</searchLink><relatesTo>1</relatesTo><i> padam@unistra.fr</i><br /><searchLink fieldCode="AR" term="%22Charrié%2C+Armelle%22">Charrié, Armelle</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Connan%2C+Jacques%22">Connan, Jacques</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Organic+Geochemistry%22">Organic Geochemistry</searchLink>. Oct2016, Vol. 100, p80-88. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Alkyl+compounds%22">Alkyl compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Biomarkers%22">Biomarkers</searchLink><br /><searchLink fieldCode="DE" term="%22Wood+tar%22">Wood tar</searchLink><br /><searchLink fieldCode="DE" term="%22Pinaceae%22">Pinaceae</searchLink><br /><searchLink fieldCode="DE" term="%22Archaeology%22">Archaeology</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Resinous material from conifers from the Pinaceae family is frequently found in an archaeological context. The material was used, notably, as waterproofing agent, as adhesive or for the caulking of boats. Two main types of material can be distinguished: resin, the exudate of conifer trees, and wood tar obtained by dry distillation of wood. Molecular investigation of such material aims, notably, at developing new molecular tools for the determination of the biological and geographical origin or of the manufacturing techniques, and for the discrimination between resin and wood tar. In this context, we report the identification by synthesis of alkyl guaiacyl dehydroabietates, which occur in a series of recent and archaeological conifer wood tar samples from shipwrecks and Gallo-Roman tar preparation sites. They most likely result from the reaction of dehydroabietic acid and alkyl guaiacols, the latter being typical wood pyrolysis products formed during the preparation of wood tar. Alkyl guaiacyl dehydroabietates are therefore proposed to be specific molecular markers for conifer wood tar, allowing a clear molecular distinction between this material and resin to be made. They are also more resistant to the alteration undergone by archaeological samples than other compounds previously proposed as markers of conifer wood tar such as anhydrosugars or alkyl guaiacols. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Organic Geochemistry is the property of Pergamon Press - An Imprint of Elsevier Science 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.orggeochem.2016.07.009
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 80
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      – SubjectFull: Alkyl compounds
        Type: general
      – SubjectFull: Biomarkers
        Type: general
      – SubjectFull: Wood tar
        Type: general
      – SubjectFull: Pinaceae
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      – SubjectFull: Archaeology
        Type: general
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      – TitleFull: Identification of alkyl guaiacyl dehydroabietates as novel markers of wood tar from Pinaceae in archaeological samples.
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            NameFull: Adam, Pierre
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            NameFull: Charrié, Armelle
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            NameFull: Connan, Jacques
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            – D: 01
              M: 10
              Text: Oct2016
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              Y: 2016
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            – TitleFull: Organic Geochemistry
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