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Journal articles

Non-isoprenoid macrocyclic glycerol diethers associated with authigenic carbonates

Abstract : A series of novel non-isoprenoid macrocyclic glycerol diethers (McDGs) has been identified in authigenic carbonates formed from marine evaporites in Spain (Lorca Basin) and Egypt (Gemsa). They contain a C(32) diabolic acid-derived alkyl moiety (i.e. 15,16-dimethyltriacontane), with some components bearing additional methyl branching at C-7 and/or C-24, and show a similar distribution at each sampling site. These McGDs are suggested to have been synthesized by some extremophilic (thermophilic and/or halophilic) bacteria. Compound specific delta(13)C data indicate distinct carbon cycling by bacteria and archaea at both sites.
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Submitted on : Wednesday, April 11, 2012 - 11:44:05 AM
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Marion Baudrand, Vincent Grossi, Richard Pancost, Giovanni Aloisi. Non-isoprenoid macrocyclic glycerol diethers associated with authigenic carbonates. Organic Geochemistry, Elsevier, 2010, 41 (12), pp.1341-1344. ⟨10.1016/j.orggeochem.2010.09.002⟩. ⟨insu-00686806⟩



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