beta-carotene and 4-6-cholestadien-3-one

beta-carotene has been researched along with 4-6-cholestadien-3-one* in 1 studies

Other Studies

1 other study(ies) available for beta-carotene and 4-6-cholestadien-3-one

Article	Year
Biomarker evidence for a major preservation pathway of sedimentary organic carbon. Science (New York, N.Y.), 2006, Jun-16, Volume: 312, Issue:5780 Hydrogenation processes leading from biomolecules to fossil biomarkers in anoxic sediments are crucial for the preservation of organic matter. However, these processes are still poorly understood. The present identification of several reduced carotenoids in recent sediments attests that these processes operate at the earliest stages of diagenesis without structural or stereochemical specificity, implying a nonbiological reduction pathway. Sulfur species (e.g., H2S) are the hydrogen donors involved in such reduction, as demonstrated with laboratory experiments. These reactions allow the preservation of abundant organic carbon in the rock record. Topics: Anaerobiosis; Bacteria; beta Carotene; Carbon; Carotenoids; Catalysis; Chlorobi; Cholestenones; Chromatiaceae; Gas Chromatography-Mass Spectrometry; Geologic Sediments; Hydrogen; Hydrogen Sulfide; Ketones; Magnetic Resonance Spectroscopy; Molecular Conformation; Molecular Structure; Organic Chemicals; Oxidation-Reduction; Phytoplankton; Stereoisomerism; Switzerland	2006

Article

Year

Biomarker evidence for a major preservation pathway of sedimentary organic carbon.

Science (New York, N.Y.), 2006, Jun-16, Volume: 312, Issue:5780

Hydrogenation processes leading from biomolecules to fossil biomarkers in anoxic sediments are crucial for the preservation of organic matter. However, these processes are still poorly understood. The present identification of several reduced carotenoids in recent sediments attests that these processes operate at the earliest stages of diagenesis without structural or stereochemical specificity, implying a nonbiological reduction pathway. Sulfur species (e.g., H2S) are the hydrogen donors involved in such reduction, as demonstrated with laboratory experiments. These reactions allow the preservation of abundant organic carbon in the rock record.

Topics: Anaerobiosis; Bacteria; beta Carotene; Carbon; Carotenoids; Catalysis; Chlorobi; Cholestenones; Chromatiaceae; Gas Chromatography-Mass Spectrometry; Geologic Sediments; Hydrogen; Hydrogen Sulfide; Ketones; Magnetic Resonance Spectroscopy; Molecular Conformation; Molecular Structure; Organic Chemicals; Oxidation-Reduction; Phytoplankton; Stereoisomerism; Switzerland

2006