Huanxi Li, Bin Han, Hongen Jiang, Bo Wang, Mengxuan Chen, Mianbo Ning, Yimin Yang
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引用次数: 0
Abstract
Rationale
Morphological analysis has been frequently applied in archaeobotany. Recently, increasing studies have been conducted on the identification of biomarkers in archaeobotanical materials, which are rarely attached to morphological analysis. To improve the interpretability of biomarker analysis, the localisation of characteristic biomarkers in ancient samples is needed.
Methods
We analysed characteristic lignans in ancient/modern sesame seeds via matrix-assisted laser desorption ionisation quadrupole time-of-flight mass spectrometry imaging (MSI), testifying the potential of MSI in a detailed discussion of ancient plant use practices.
Results
The MSI distributions of sesamin and sesamolin shared similar traits in modern and ancient sesame seeds while their MSI signals were inhibited by lipidic substances in in situ MSI tests. Besides targeted biomarker characterisation, nontargeted MSI analysis showed potential to reveal plant material treatment process.
Conclusions
Botanical biomarker distribution traits were studied for the first time in archaeobotany. The MSI created a visualised colour plot with localised compound distributions, in which archaeologists can visually aid their study of plant use in antiquity. This, in some cases, provides key information for understanding the livelihoods of ancient people.
期刊介绍:
Rapid Communications in Mass Spectrometry is a journal whose aim is the rapid publication of original research results and ideas on all aspects of the science of gas-phase ions; it covers all the associated scientific disciplines. There is no formal limit on paper length ("rapid" is not synonymous with "brief"), but papers should be of a length that is commensurate with the importance and complexity of the results being reported. Contributions may be theoretical or practical in nature; they may deal with methods, techniques and applications, or with the interpretation of results; they may cover any area in science that depends directly on measurements made upon gaseous ions or that is associated with such measurements.