English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Chemical modification of biomarkers through accelerated degradation: implications for ancient plant identification in archaeo-organic residues

Huber, B., Giddings Vassão, D., Roberts, P., Wang, Y., & Larsen, T. (2022). Chemical modification of biomarkers through accelerated degradation: implications for ancient plant identification in archaeo-organic residues. Molecules, 27(10): 3331. doi:10.3390/molecules27103331.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
shh3228.pdf (Publisher version), 3MB
Name:
shh3228.pdf
Description:
OA
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-

Locators

show
hide
Locator:
Table S1-S2; Figures S1 (Supplementary material)
Description:
zip. - (last seen: June 2022)

Creators

show
hide
 Creators:
Huber, Barbara1, Author              
Giddings Vassão, Daniel1, Author              
Roberts, Patrick1, Author              
Wang, Yiming1, Author              
Larsen, Thomas1, Author              
Affiliations:
1Archaeology, Max Planck Institute for the Science of Human History, Max Planck Society, ou_2074312              

Content

show
hide
Free keywords: archaeological plant residues; residue identification; secondary metabolites; degradation experiment; catalysis; GC-MS; multivariate analysis
 Abstract: Biochemical and biomolecular archaeology is increasingly used to elucidate the consumption, use, origin, and trade of plants in the past. However, it can be challenging to use biomarkers to identify the taxonomic origin of archaeological plants due to limited knowledge of molecular survival and degradation for many key plant compounds in archaeological contexts. To gain a fundamental understanding of the chemical alterations associated with chemical degradation processes in ancient samples, we conducted accelerated degradation experiments with essential oil derived from cedar (Cedrus atlantica) exposed to materials commonly found in the archaeological record. Using GC-MS and multivariate analysis, we detected a total of 102 compounds across 19 treatments that were classified into three groups. The first group comprised compounds that were abundant in fresh cedar oil but would be unlikely to remain in ancient residues due to rapid degradation. The second group consisted of compounds that remained relatively stable or increased over time, which could be potential biomarkers for identifying cedar in archaeological residues. Compounds in the third group were absent in fresh cedar oil but were formed during specific experiments that could be indicative for certain storage conditions. These results show that caution is warranted for applying biomolecular profiles of fresh plants to ancient samples and that carefully designed accelerated degradation experiments can, at least in part, overcome this limitation.

Details

show
hide
Language(s): eng - English
 Dates: 2022-05-22
 Publication Status: Published online
 Pages: 16
 Publishing info: -
 Table of Contents: 1. Introduction
2. Experimental Design
3. Results and Discussion
3.1. GC-MS Results and Multivariate Analyses
3.2. Compound Identification
4. Materials and Methods
4.1. Materials
4.2. Sample Preparation, Extraction and Analysis
4.3. Data Pretreatment and Statistical Analysis
5. Conclusions
 Rev. Type: Peer
 Identifiers: DOI: 10.3390/molecules27103331
Other: shh3228
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Molecules
  Other : Chemistry and Archaeology: A Unique System to Inquire the Past (Special Issue)
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Basel : MDPI
Pages: - Volume / Issue: 27 (10) Sequence Number: 3331 Start / End Page: - Identifier: ISSN: 1420-3049
CoNE: https://pure.mpg.de/cone/journals/resource/954925623244