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Jeandet, P.* ; Heinzmann, S.S. ; Roullier-Gall, C. ; Cilindre, C.* ; Aron, A.* ; Deville, M.A.* ; Moritz, F. ; Karbowiak, T.* ; Demarville, D.* ; Brun, C.* ; Moreau, F.* ; Michalke, B. ; Liger-Belair, G.* ; Witting, M. ; Lucio, M. ; Steyer, D.* ; Gougeon, R.D.* ; Schmitt-Kopplin, P.

Chemical messages in 170-year-old champagne bottles from the Baltic Sea: Revealing tastes from the past.

Proc. Natl. Acad. Sci. U.S.A. 112, 5893-5898 (2015)

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Archaeochemistry as the application of the most recent analytical techniques to ancient samples now provides an unprecedented understanding of human culture throughout history. In this paper, we report on a multiplatform analytical investigation of 170-y-old champagne bottles found in a shipwreck at the bottom of the Baltic Sea, which provides insight into winemaking practices used at the time. Organic spectroscopy-based nontargeted metabolomics and metallomics give access to the detailed composition of these wines, revealing, for instance, unexpected chemical characteristics in terms of small ion, sugar, and acid contents as well as markers of barrel aging and Maillard reaction products. The distinct aroma composition of these ancient champagne samples, first revealed during tasting sessions, was later confirmed using state-of-the-art aroma analysis techniques. After 170 y of deep sea aging in close-to-perfect conditions, these sleeping champagne bottles awoke to tell us a chapter of the story of winemaking and to reveal their extraordinary archaeometabolome and elemental diversity in the form of chemical signatures related to each individual step of champagne production.

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