In a North Sea oil, the carotenoid derivatives -carotene, -isorenieratane, and isorenieratane were identified, together with a series of aryl isoprenoids with a 2,3,6-trimethyl substitution pattern for the aromatic ring. The 13C values of -carotene and -isorenieratane are similar, whereas isorenieratane is ca. 15% heavier. This suggests that -isorenieratane is not derived from -isorenieratane biosynthesised by Chlorobiaceae, but from aromatisation of -carotene. This was confirmed by laboratory aromatisation of partially hydrogenated -carotene, which yielded -isorenieratane as the main product. The aryl isoprenoids, which can be formed by C---C bond cleavage of both isorenieratane and -isorenieratane, have a mixed isotopic signature in the o...
Aromatic carotenoid-derived hydrocarbon biomarkers are ubiquitous in ancient sediments and oils and ...
Despite carotenoids being abundant natural products, there are only scattered literature reports of...
Diagenetic products of the green sulfur bacterial pigment isorenieratene have been studied in sedime...
A wide range of novel diagenetic and catagenetic products of the diaromatic carotenoid isorenieraten...
Four crude oil samples from the Sergipe-Alagoas Basin, northeastern Brazil, were analyzed using full...
Degradation products of the 2,3,6-/3,4,5-trimethyl substituted analog of isorenieratene were charact...
Pyrolysates of high-molecular-weight sedimentary fractions of the Duvernay Formation (Western Canada...
High performance liquid chromatography with photodiode array UV–Vis detection and atmospheric pressu...
A suite of novel diagenetic products of -carotene has been identified in an extract of a sample from...
Periods in Earth history characterized by extensive organic carbon deposition, so-called oceanic ano...
Pyrolysates of kerogens isolated from Indian Ocean surface sediments and from Black Sea Unit II cont...
The source of marine oils from the deep Tarim Basin is still in debate due to several alteration pro...
Sedimentary rocks from the saline formation of the Lopare Basin were investigated. Sediments contain...
Crocetane, an irregular C20 isoprenoid, in sediments generally associated with gas hydrate settings,...
AbstractThe C20 irregular isoprenoid crocetane (2,6,11,15-tetramethylhexadecane) has been unambiguou...
Aromatic carotenoid-derived hydrocarbon biomarkers are ubiquitous in ancient sediments and oils and ...
Despite carotenoids being abundant natural products, there are only scattered literature reports of...
Diagenetic products of the green sulfur bacterial pigment isorenieratene have been studied in sedime...
A wide range of novel diagenetic and catagenetic products of the diaromatic carotenoid isorenieraten...
Four crude oil samples from the Sergipe-Alagoas Basin, northeastern Brazil, were analyzed using full...
Degradation products of the 2,3,6-/3,4,5-trimethyl substituted analog of isorenieratene were charact...
Pyrolysates of high-molecular-weight sedimentary fractions of the Duvernay Formation (Western Canada...
High performance liquid chromatography with photodiode array UV–Vis detection and atmospheric pressu...
A suite of novel diagenetic products of -carotene has been identified in an extract of a sample from...
Periods in Earth history characterized by extensive organic carbon deposition, so-called oceanic ano...
Pyrolysates of kerogens isolated from Indian Ocean surface sediments and from Black Sea Unit II cont...
The source of marine oils from the deep Tarim Basin is still in debate due to several alteration pro...
Sedimentary rocks from the saline formation of the Lopare Basin were investigated. Sediments contain...
Crocetane, an irregular C20 isoprenoid, in sediments generally associated with gas hydrate settings,...
AbstractThe C20 irregular isoprenoid crocetane (2,6,11,15-tetramethylhexadecane) has been unambiguou...
Aromatic carotenoid-derived hydrocarbon biomarkers are ubiquitous in ancient sediments and oils and ...
Despite carotenoids being abundant natural products, there are only scattered literature reports of...
Diagenetic products of the green sulfur bacterial pigment isorenieratene have been studied in sedime...