Hydrocarbons and Lipids: An Introduction to Structure, Physicochemical Properties, and Natural Occurrence

Wilkes, Heinz; Jarling, René; Schwarzbauer, Jan

doi:10.1007/978-3-319-54529-5_34-1

Cited by 3 publications

(4 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aliphatic hydrocarbons (n-alkanes, AH), both linear and cyclic, and polycyclic aromatic hydrocarbons (PAH) are abundant constituents of petroleum (Comandini et al, 2013). The presence of n-alkanes is proportional to the oil integrity, since highly biodegraded oil reserves show low rates of n-alkanes (Wilkes et al, 2020). Despite the low detection of hydrocarbons, the presence of petrogenic sources of hydrocarbons was supported by the HMW/LMW-AHs, the Fluoranthene/Pyrene ratio, and the dominance of LMH-PAHs (Wang et al, 2003).…”

Section: Geochemistry Of the Inactive Pockmark Sedimentmentioning

confidence: 99%

“…Inactive pockmarks can still leak small amounts of hydrocarbons and even trap gas within the sediment (Haverkamp et al, 2014), making them rich in methane, hydrogen sulfide, sulfate, and ammonium (Conway, 1994). Despite the main thermogenic origin in deep sedimentary systems, hydrocarbons are also synthesized by organisms such as prokaryotes, plankton, and algae in biosynthetic products, which in turn are sedimented through the marine snow and transformed by abiotic processes or consumed by microorganisms as an energy source (Wilkes, Jarling and Schwarzbauer, 2020). In this way, pockmarks can sustain micro-and macroorganisms based on hydrocarbons (Dando et al, 1991;Sibuet and Olu, 1998) and complex carbohydrates that are distinct from the surrounding sediment (Haverkamp et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Methane-related community of a carbonate-enriched pockmark, Brazilian Southeastern continental slope

et al. 2022

View full text Add to dashboard Cite

Ocean and Coastal ResearchPockmarks are geological features that often sustain hydrocarbon-related communities of microorganisms when active, seeping oil or methane. Microbial communities of inactive pockmarks have not been well studied until the present. Plenty of pockmarks in the Southwestern Atlantic Ocean have been discovered. However, no information is available about the organic characteristics in association with the microbial diversity related to methane and nonmethane hydrocarbon consumption. This study examined the identity and potential ecology of the methane-related microbial community in an inactive SW Atlantic Carbonate-enriched Pockmark (SWACP). Undisturbed sediment cores were enriched with CH 4 99.5% at 5°C, with samples harvested at 16h, 120h, 240h, 720h, and 960h, followed by metataxonomics functional prediction, and the correlation of microbial groups with incubation and enrichment types. The SWACP is depleted in organic compounds, and chemosynthetic production is dominant. Incubated mini-cores of sediment were affected by incubation time and enrichment type, which influenced the microbial composition. Although several taxa were shared among all sediment samples, specific groups per enrichment type and incubation time were observed. These communities comprised taxa previously reported in marine bottom waters, carbonate crusts, active cold-seeps, and inactive pockmarks. The methane-enriched taxa were predominantly related to aerobic methanotrophy, methylotrophy, aerobic and anaerobic non-methane hydrocarbon degradation, and fermentation. This study brings the first survey of the key microbial groups in methane fluxes of a Brazilian deep-sea pockmark, providing data for understanding the ecology surrounding the SW Atlantic gas field areas.

show abstract

Section: Geochemistry Of the Inactive Pockmark Sedimentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methane-related community of a carbonate-enriched pockmark, Brazilian Southeastern continental slope

et al. 2022

View full text Add to dashboard Cite

show abstract

“…HRMS techniques are Fourier transform ion cyclotron resonance (FT-ICR), Orbitrap, and Time of Flight (TOF) mass spectrometry, whose working principles are well known and reported elsewhere [18]. Petroleomic studies and principles regarding crude oil and bio-oils were reported in different recently-published reviews [19][20][21][22][23][24][25][26]. The high mass resolution and accuracy (Figure 1A,B) allow the technique, respectively, to detect and assign hundreds of thousands of molecular formulae.…”

Section: Introductionmentioning

confidence: 99%

“…Such graphs were helpful to follow-up oil or bio-oil upgrading treatment (elimination of oxygen, nitrogen, or sulfur by hydrotreatment or cracking) [32,33]. As reported in the different reviews [19][20][21][22][23][24][25][26], most of the HRMS analyses are performed in direct infusion (DI) mode, which may be responsible for the ion suppression phenomenon [34], especially in the electrospray ionization mode. In addition, the majority of the analyses are carried out by FT-ICR MS due to its greatest capabilities in terms of resolving power and mass accuracy measurement [18] (Table 2).…”

Section: Introductionmentioning

confidence: 99%

Next Challenges for the Comprehensive Molecular Characterization of Complex Organic Mixtures in the Field of Sustainable Energy

et al. 2022

View full text Add to dashboard Cite

The conversion of lignocellulosic biomass by pyrolysis or hydrothermal liquefaction gives access to a wide variety of molecules that can be used as fuel or as building blocks in the chemical industry. For such purposes, it is necessary to obtain their detailed chemical composition to adapt the conversion process, including the upgrading steps. Petroleomics has emerged as an integral approach to cover a missing link in the investigation bio-oils and linked products. It relies on ultra-high-resolution mass spectrometry to attempt to unravel the contribution of many compounds in complex samples by a non-targeted approach. The most recent developments in petroleomics partially alter the discriminating nature of the non-targeted analyses. However, a peak referring to one chemical formula possibly hides a forest of isomeric compounds, which may present a large chemical diversity concerning the nature of the chemical functions. This identification of chemical functions is essential in the context of the upgrading of bio-oils. The latest developments dedicated to this analytical challenge will be reviewed and discussed, particularly by integrating ion source features and incorporating new steps in the analytical workflow. The representativeness of the data obtained by the petroleomic approach is still an important issue.

show abstract

Characterization of Dominant Cuticular Hydrocarbons in Inversion and Inversion-Free Strains of <i>Drosophila ananassae</i> (Doleschall)

R. S.,

S. C.

2024

IJE

View full text Add to dashboard Cite

Cuticular hydrocarbons (CHCs) of Drosophila ananassae (Doleschall) was characterized and identified using gas chromatography and mass spectrometry (GC-MS) analysis. A high % of methyl-branched alkanes were identified in all inversion (2LA, 3LA and 2LA+3LA) and inversion-free strains followed by linear alkanes and alkenes. The present work unfolds the significant patterns of variations in the isomeric forms of methylated alkanes between the inversion and inversion free strains (F-46.6; df-3, p 0.005), and non-significant between the sex (F-2.14; df-1, p 0.2394). But in linear alkanes shows significant variation between the inversion strains (F-30.49; df-3, p 0.009) and between the male and female (F-115.45; df-1, p 0.001) was observed. In particular there is a significant correlation between the chromosomal inversion and synthesis of CHCs in D. ananassae. Unique blend of CHCs in Drosophila performs dual role as desiccation resistance and act as chemical signalling molecule. Linear alkanes are majorly involved in desiccation resistance but in methyl- branched CHCs length variation is a key determinant of desiccation resistance. Presence of longer methyl- branched alkanes and higher desiccation resistance, shorter the carbon chain length act as a signalling molecules. The current study revealed the influence of chromosomal inversion on the cuticular hydrocarbon profile in D. ananassae.

show abstract

Hydrocarbons and Lipids: An Introduction to Structure, Physicochemical Properties, and Natural Occurrence

Abstract: Hydrocarbons and lipids are among the most abundant organic compound classes in the biogeosphere. They are formed directly by living organisms as biosynthetic H. Wilkes (*) • R. Jarling Organic Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM),

Cited by 3 publications

References 42 publications

Methane-related community of a carbonate-enriched pockmark, Brazilian Southeastern continental slope

Methane-related community of a carbonate-enriched pockmark, Brazilian Southeastern continental slope

Next Challenges for the Comprehensive Molecular Characterization of Complex Organic Mixtures in the Field of Sustainable Energy

Characterization of Dominant Cuticular Hydrocarbons in Inversion and Inversion-Free Strains of <i>Drosophila ananassae</i> (Doleschall)

Contact Info

Product

Resources

About