Disentangling the chemistry of Australian plant exudates from a unique historical collection

Significance For millennia, Aboriginal Australian peoples have used the extraordinary physicochemical properties of plant exudates from practical applications to cultural expression. We employ state-of-the-art spectroscopy to characterize the molecular compositions of well-preserved, native Australi...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2022-05, Vol.119 (22), p.e2116021119-e2116021119
Main Authors: Georgiou, Rafaella, Popelka-Filcoff, Rachel S, Sokaras, Dimosthenis, Beltran, Victoria, Bonaduce, Ilaria, Spangler, Jordan, Cohen, Serge X, Lehmann, Roy, Bernard, Sylvain, Rueff, Jean-Pascal, Bergmann, Uwe, Bertrand, Loïc
Format: Article
Language:English
Subjects:
Analytical chemistry
Art and art history
Australia
Chemical composition
Chemical Sciences
Chemical speciation
Chemistry
Combinatorial analysis
Cultural heritage and museology
Eucalyptus
Exudates
Exudation
Fourier transforms
Functional groups
Gas chromatography
Gas Chromatography-Mass Spectrometry - methods
Genera
Gums
Humanities and Social Sciences
Infrared spectroscopy
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Mass spectrometry
Mass spectroscopy
Material chemistry
Native peoples
Organic chemistry
Phenolic compounds
Phenols
Physical Sciences
Physicochemical properties
Plant Exudates
Polysaccharides
Pyrolysis
Raman spectroscopy
Resins
Science & Technology - Other Topics
Social Sciences
Speciation
Spectroscopy
Terpenes - chemistry
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Summary:Significance For millennia, Aboriginal Australian peoples have used the extraordinary physicochemical properties of plant exudates from practical applications to cultural expression. We employ state-of-the-art spectroscopy to characterize the molecular compositions of well-preserved, native Australian plant exudates ( , , , and ) from a historic collection assembled over a century ago. This work demonstrates the benefits of X-ray Raman spectroscopy for the analysis of these complex natural systems. It provides key information for a broader understanding of their terpenoid, aromatic, phenolic, and polysaccharide composition and subsequent chemical classification. It complements Fourier-transform infrared and pyrolysis-gas chromatography-mass spectrometry by allowing bulk-sensitive analysis in a fully noninvasive manner and probes molecular features which remain silent in these commonly employed analyses.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.2116021119