B. G. Van-aarssen, R. Alexander, and R. I. Kagi, Higher plant biomarkers reflect palaeovegetation changes during Jurassic times, Geochimica et Cosmochimica Acta, vol.64, issue.8, pp.1417-675, 2000.
DOI : 10.1016/S0016-7037(99)00432-9

. S. Akoka, L. Barantin, M. Trierweiler, C. Aroulanda, P. Lesot et al., Concentration measurement by proton NMR using the Structural ambiguities in bridged ring 679 systems resolved using natural abundance deuterium NMR in chiral liquid crystals, J. Phys, 1999.

N. Bossard, Pertinence et calibration d'un nouveau marqueur paléohydrologique : Le rapport 686, 2013.

Y. Chikaraishi and H. Narakoa, Compound-specific ??D?????13C analyses of n-alkanes extracted from terrestrial and aquatic plants, Phytochemistry, vol.63, issue.3, pp.361-371, 2003.
DOI : 10.1016/S0031-9422(02)00749-5

Y. Chikaraishi, R. Tanaka, A. Tanaka, and N. Ohkouchi, Fractionation of hydrogen isotopes during phytol biosynthesis, Organic Geochemistry, vol.40, issue.5, pp.569-573, 2009.
DOI : 10.1016/j.orggeochem.2009.02.007

B. Corbet, Origine et transformation des triterpènes dans les sédiments récents, p.700, 1980.

P. A. Cranwell, Organic geochemistry of lacustrine sediments: triterpenoids of higher plant 702 origin reflecting post-glacial vegetational succession, Lakes Sediments and Environmental 703, 1984.

M. Das and S. Mahato, Triterpenoids, Phytochemistry, vol.22, issue.5, pp.1071-1085, 1983.
DOI : 10.1016/0031-9422(83)80198-8

W. Dansgaard, Stable isotopes in precipitation, Tellus, vol.16, pp.436-468, 1964.

J. R. De-laeter, J. K. Böhlke, P. De-bièvre, H. Hidaka, H. S. Pieser et al., Atomic weights of the elements, Pure Appl. Chem, vol.707, issue.6, pp.75-683, 2003.

I. E. Eglinton and G. Eglinton, Molecular proxies for paleoclimatology, Earth and Planetary Science Letters, vol.275, issue.1-2, pp.1-16, 2008.
DOI : 10.1016/j.epsl.2008.07.012

S. J. Feakins and A. L. Sessions, Controls on the D/H ratios of plant leaf waxes in an arid ecosystem, Geochimica et Cosmochimica Acta, vol.74, issue.7, pp.2128-2141, 2010.
DOI : 10.1016/j.gca.2010.01.016

K. H. Freeman, C. J. Boreham, R. E. Summons, and J. M. Hayes, The effect of aromatization on the isotopic compositions of hydrocarbons during early diagenesis, Organic Geochemistry, vol.21, issue.10-11, pp.1037-714, 1994.
DOI : 10.1016/0146-6380(94)90067-1

G. Gleixner and I. Mügler, Compound-Specific Hydrogen Isotope Ratios of Biomarkers, Stable Isotopes as Tracers for Ecological Change, 2007.
DOI : 10.1016/B978-012373627-7/50018-4

R. Dawson and . Siegwolf, Terrestrial Ecology Series, pp.249-718

J. Hou, W. J. D-'andrea, D. Mcdonald, and Y. Huang, Hydrogen isotopic variability in leaf 720 waxes among terrestrial and aquatic plants around Blood Pond Org, 2007.

T. Hyperchem, Professional 6.1, Hypercube, Inc, 1115 NN 4 th street, pp.723-724

H. Itô, The chemical investigation of some gramineae oils, J. Fac. of Agri, 1934.

M. Rolland, Millet cultivation history in the French Alps as evidenced by a 735 sedimentary molecule, J. Archaeol. Sci, vol.35, pp.814-820, 2008.

J. Jacob, J. Disnar, and G. Bardoux, Carbon isotope evidence for sedimentary miliacin as a 737 tracer of Panicum miliaceum (broomcorn millet) in the sediments of, 2008.

J. Jacob, C. Lemilbeau, N. Bossard, J. R. Disnar, and Y. Billaud, Combined ? 13 C -?D analysis 743 of pentacyclic triterpenes and their derivatives. Studium Conference, p.744, 2011.

S. D. Killops, J. I. Raine, A. D. Woolhouse, and R. J. Weston, Chemostratigraphic evidence of higher-plant evolution in the Taranaki Basin, New Zealand, Organic Geochemistry, vol.23, issue.5, pp.429-445, 1995.
DOI : 10.1016/0146-6380(95)00019-B

P. Lesot, D. Merlet, A. Lowenstein, and J. Courtieu, Enantiomeric Visualisation using Proton, p.754, 1998.

P. Lesot, V. Baillif, and I. Billault, Combined analysis of four C-18 unsaturated fatty acids 757 using Natural Abundance Deuterium 2D-NMR spectroscopy in chiral oriented solvents, 2008.

P. Lesot and O. Lafon, Enantiomeric Analysis using Natural Abundance Deuterium 3D-NMR 760, 2008.

P. Lesot and J. Courtieu, Natural Abundance Deuterium NMR Spectroscopy, 2009.
DOI : 10.1016/B978-0-12-409547-2.12110-9

URL : https://hal.archives-ouvertes.fr/insu-00843521

P. Lesot, Z. Serhan, and I. Billault, Recent advances in the analysis of the site-specific 765, 2011.

H. Nmr, Application on conjugated linolenic methyl esters, Anal. Bioanal

P. Lesot, C. Aroulanda, H. Zimmermann, and Z. Luz, Enantiotopic Discrimination in the NMR 772, 2015.

S. Massou, C. Nicolas, F. Letisse, and J. Portais, NMR-based fluxomics: Quantitative 2D NMR methods for isotopomers analysis, Phytochemistry, vol.68, issue.16-18, pp.2330-2340, 2007.
DOI : 10.1016/j.phytochem.2007.03.011

W. Liu, H. Yang, and L. Li, Hydrogen isotopic compositions of n-alkanes from terrestrial plants correlate with their ecological life forms, Oecologia, vol.46, issue.4, pp.330-338, 2006.
DOI : 10.1007/s00442-006-0494-0

F. Lohmann, Aromatisations microbiennes de triterpènes végétaux, 1988.

S. B. Mahato and S. Sen, Advances in triterpenoid research, 1990???1994, Phytochemistry, vol.44, issue.7, pp.1185-781, 1990.
DOI : 10.1016/S0031-9422(96)00639-5

G. J. Martin and M. L. Martin, Deuterium labelling at the natural abundance level as studied by high field quantitative 2H NMR, Tetrahedron Letters, vol.22, issue.36, pp.3525-3528, 1981.
DOI : 10.1016/S0040-4039(01)81948-1

G. J. Martin, B. Zhang, N. Naulet, and M. L. Martin, Deuterium transfer in the bioconversion 785 of glucose to ethanol studied by speific labeling at the natural abundance level, J. Am. Chem, 1986.

F. A. Mcinerney, B. R. Helliker, and K. H. Freeman, Hydrogen isotope ratios of leaf wax n-alkanes in grasses are insensitive to transpiration, Geochimica et Cosmochimica Acta, vol.75, issue.2, pp.541-554, 2011.
DOI : 10.1016/j.gca.2010.10.022

D. Merlet, B. Ancian, D. Courtieu, and P. Lesot, Two-Dimensional Deuterium NMR Spectroscopy of Chiral Molecules Oriented in a Polypeptide Liquid Crystal: Applications for the Enantiomeric Analysis through Natural Abundance Deuterium NMR, Journal of the American Chemical Society, vol.121, issue.22, pp.5249-5258, 1999.
DOI : 10.1021/ja9837699

G. Motuzaite-matuzeviciute, J. Jacob, S. Telizhenko, and M. K. Jones, Miliacin in paleosoils from 794 early Iron Age in Ukraine reveals paleofields of broomcorn millet, p.795, 2013.

T. Ohmoto, M. Ikuse, and S. Natori, Triterpenoids of the Gramineae. Phytochem, pp.2137-797, 1970.

J. Regnery, W. Püttmann, A. Koutsodendris, A. Mulch, and J. Pross, Comparison of the paleoclimatic significance of higher land plant biomarker concentrations and pollen data: A case study of lake sediments from the Holsteinian interglacial, Organic Geochemistry, vol.61, pp.73-84, 2013.
DOI : 10.1016/j.orggeochem.2013.06.006

J. Rullkötter, T. M. Peakman, and H. L. Ten-haven, Early diagenesis of terrigenous triterpenoids and its implications for petroleum geochemistry, Organic Geochemistry, vol.21, issue.3-4, pp.215-233, 1994.
DOI : 10.1016/0146-6380(94)90186-4

D. Sachse, J. Radke, and G. Gleixner, ?D values of individual n-alkanes from terrestrial plants 804 along a climatic gradient ? Implications for the sedimentary biomarker record, Org. Geochem, vol.805, issue.37, pp.469-483, 2006.

M. Sarfati, P. Lesot, D. Merlet, and J. Courtieu, Theoretical and experimental aspects of 807 enantiomeric differentiation using natural abundance multinuclear NMR spectroscopy in 808 polypeptide liquid crystals, Chem. Commun, vol.21, pp.2069-2081, 2000.

V. F. Schwab, Y. Garcin, S. Sachse, G. Todou, O. Séné et al., Effect of aridity on ? 13 C and ? D values of C3 plant-and C4 graminoid-derived leaf 814 wax lipids from soils along an environmental gradient in Cameroon, 2015.

Z. Serhan, L. Martel, I. Billault, and P. Lesot, Complete determination of natural site-specific enantio-isotopomeric excesses in linoleic acid using natural abundance deuterium 2D NMR in polypeptide mesophases, Chemical Communications, vol.120, issue.35, pp.6599-6601, 2010.
DOI : 10.1039/c0cc01486a

A. L. Sessions, T. W. Burgoyne, A. Schimmelmann, and J. M. Hayes, Fractionation of hydrogen isotopes in lipid biosynthesis, Organic Geochemistry, vol.30, issue.9, pp.1193-1200, 1999.
DOI : 10.1016/S0146-6380(99)00094-7

F. A. Smith and K. H. Freeman, Influence of physiology and climate on ??D of leaf wax n-alkanes from C3 and C4 grasses, Geochimica et Cosmochimica Acta, vol.70, issue.5, pp.1172-1187, 2006.
DOI : 10.1016/j.gca.2005.11.006

V. J. Terwilliger and J. Jacob, Introduction: Hydrogen isotopes as environmental recorders, Geochimica et Cosmochimica Acta, vol.111, 2013.
DOI : 10.1016/j.gca.2013.02.001

URL : https://hal.archives-ouvertes.fr/insu-00787432

J. Trendel, Dégradation des triterpènes dans les sédiments. Aspects photochimiques et 833 microbiologiques, 1985.

Y. Wang, A. L. Sessions, R. J. Nielsen, and W. A. Goddard, Equilibrium 2H/1H fractionation in organic molecules: III. Cyclic ketones and hydrocarbons, Geochimica et Cosmochimica Acta, vol.107, issue.836, pp.82-95, 2013.
DOI : 10.1016/j.gca.2013.01.001

Y. V. Wang, T. Larsen, G. Leduc, N. Andersen, T. Blanz et al., What does leaf 838 wax ?D from a mixed C3/C4 vegetation region tell us? Geochim. et Cosmochim, Acta, vol.111, issue.839, pp.128-139, 2013.

G. A. Wolff, J. M. Trendel, and P. Albrecht, Novel Monoaromatic triterpenoid hydrocarbons occuring in sediments, Tetrahedron, vol.45, issue.21, pp.6721-6728, 1989.
DOI : 10.1016/S0040-4020(01)89142-0

R. Xu, G. C. Fazio, and S. P. Matsuda, On the origins of triterpenoid skeletal diversity, 2004.