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31.08.2020

New co-authored paper led by Dr. Melanie Miller (University of Otago, NZ/University of Berkeley, USA), Dr. Helen Whelton (University of Bristol, UK) and Dr. Jillian Switft (Bernice Pauahi Bishop Museum, USA) has been just been published in Scientific Reports: Interpreting ancient food practices: stable isotope and molecular analyses of visible and absorbed residues from a year-long cooking experiment.

https://doi.org/10.1038/s41598-020-70109-8

In this paper, the results from a year-long cooking experiment are reported: Seven researchers cooked mixtures of wheat, maize and venison once a week in unglazed pottery and collected three different types of residues with archaeological significance along the way: Burnt-on crusts, the thin patina and ceramic powder for absorbed residue. At the end of the year the recipes were changed and final samples were collected. By molecular and isotopic (δ13C, δ15N) profiling we could show how the different residues track the chemical signals of the cooking ingredients differently and with different time lag.

More info can be found in this press release.

08.07.2020

New paper led by colleagues from Sheffield and Cardiff has been published in PLOS ONE: “The dietary impact of the Norman Conquest: A multiproxy archaeological investigation of Oxford, UK”

https://doi.org/10.1371/journal.pone.0235005

Here, isotopic analysis (δ13C, δ15N), of human and animal remains, palaeopathological analysis of human skeletal remains and the analysis of preserved lipid residues in ceramic sherds were combined to paint a picture about the wider impact of the 11th century Norman Invasion on people’s lives and diets.

More info can also be found in this press release by Cardiff University

 

 

16.06.2020

New paper published in PNAS: “Mechanisms of lipid preservation in archaeological clay ceramics revealed by mass spectrometry imaging”

https://doi.org/10.1073/pnas.1922445117

 

In this paper we used Secondary Ion Mass Spectrometry (SIMS) for the direct analysis of lipid residues in archaeological ceramics to understand how lipids are taken up into these ceramics and how they can be preserved over millennia.

More background on the paper can be found in this “Behind the paper” blog piece: https://www.chemistry.nat.fau.eu/foodsafetyquality/news/behind-the-papers