An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)

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Date
2008-01
Author
Talbot, Helen M.
Coolen, Marco J. L.
Sinninghe Damste, Jaap S.
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Citable URI
http://hdl.handle.net/1912/2487
As published
http://dx.doi.org/10.1016/j.orggeochem.2008.01.008
Keyword
 Ace Lake; Bacteriohopanepolyols; αβ-bacteriohopanetetrol; Holocene 
Abstract
Whilst investigating the intact biohopanoid (bacteriohopanepolyol, BHP) distribution in Holocene sediments from Ace Lake (Antarctica), we have identified the presence of ab- bacteriohopanetetrol in sediments aged up to 9400 years BP. To our knowledge, this is the first time that an intact polyfunctionalised BHP with the “geological” 17α,21β(H) configuration has been identified in a sediment. Previously, this structure has only been observed in species of the nitrogen fixing bacterium Frankia. Its presence here in the sedimentary environment has implications for the interpretation of hopanoid ββ/αβ ratios in the geological record.
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Author Posting. © Elsevier B.V., 2008. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Organic Geochemistry 39 (2008): 1029-1032, doi:10.1016/j.orggeochem.2008.01.008.
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