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Showing 1-30 of 34 results for "07562" within Papers
Chintalapati Venkata Ramana et al.
Antonie van Leeuwenhoek, 103(4), 885-898 (2013-01-12)
Strain JC90(T) was isolated from a soda lake in Lonar, India. Strain JC90(T) maintains its external pH to 8.5 and participates in halite formation. Based on 16S rRNA gene sequence similarity studies, strain JC90(T) was found to belong to the
Masahiko Isaka et al.
Mycological research, 113(Pt 4), 491-497 (2009-05-08)
The scale insect pathogens Hypocrella s. lat. and their Aschersonia anamorphs, collected at various locations in Thailand, were surveyed for their productivity of three hopane triterpenes, zeorin (6alpha,22-dihydroxyhopane), dustanin (15alpha,22-dihydroxyhopane), and 3beta-acetoxy-15alpha,22-dihydroxyhopane, when cultured in a liquid medium (potato-dextrose broth)
Distribution and origins of polycyclic aromatic hydrocarbons (PAHs) in riverine, estuarine, and marine sediments in Thailand.
Boonyatumanond R, et al.
Marine Pollution Bulletin, 52(8), 942-956 (2006)
Geir Kildahl-Andersen et al.
Magnetic resonance in chemistry : MRC, 48(12), 951-954 (2010-10-01)
The full (1)H and (13)C NMR chemical shift assignment of 2α-methyl-17α(H),21β(H)-hopane is presented. This compound is formed in mature sediments from biogenic sources of 2β-methyl-17β(H),21β(H)-hopanoids, which include several cyanobacteria. In addition, full (1)H and (13)C NMR chemical shift data of
Ralph J Delfino et al.
Environmental health perspectives, 118(6), 756-762 (2010-02-04)
Evidence is needed regarding the air pollutant components and their sources responsible for associations between particle mass concentrations and human cardiovascular outcomes. We previously found associations between circulating biomarkers of inflammation and mass concentrations of quasi-ultrafine particles <or= 0.25 microm
P V Welander et al.
Geobiology, 10(2), 163-177 (2012-01-10)
Hopanes preserved in both modern and ancient sediments are recognized as the molecular fossils of bacteriohopanepolyols, pentacyclic hopanoid lipids. Based on the phylogenetic distribution of hopanoid production by extant bacteria, hopanes have been used as indicators of specific bacterial groups
Vikas Jaitak et al.
Natural product communications, 5(10), 1561-1566 (2010-12-03)
Phytochemical investigation of the aerial parts of Potentilla fulgens L. led to the isolation of two new triterpenes, potentene A (1) and potentene B (2). In addition, three known compounds afzelchin-4alpha --> 8"-catechin (3), epiafzelchin (4) and rutin (5) were
Julio Sepúlveda et al.
Science (New York, N.Y.), 326(5949), 129-132 (2009-10-03)
The course of the biotic recovery after the impact-related disruption of photosynthesis and mass extinction event at the Cretaceous-Paleogene boundary has been intensely debated. The resurgence of marine primary production in the aftermath remains poorly constrained because of the paucity
Ute Kraus et al.
Inhalation toxicology, 23(7), 431-447 (2011-06-07)
The aerosol components responsible for the adverse health effects of the exposure to particulate matter (PM) have not been conclusively identified, and there is especially little information on the role of particulate organic compounds (POC). This study evaluated the role
Gerald F John et al.
Marine pollution bulletin, 133, 756-761 (2018-07-26)
In-situ burning (ISB) is a remediation strategy that is used for managing oil spills. ISB generates heavy residues that can submerge and negatively impact benthic environments. To track the fate of toxic contaminants in ISB residues, a conservative hopane biomarker
Hind Sbihi et al.
Environmental health : a global access science source, 12, 48-48 (2013-06-21)
Exposure to traffic-related air pollution (TRAP) can adversely impact health but epidemiologic studies are limited in their abilities to assess long-term exposures and incorporate variability in indoor pollutant infiltration. In order to examine settled house dust levels of hopanes, engine
Andrew T Lambe et al.
Environmental science & technology, 43(23), 8794-8800 (2009-12-01)
Hydroxyl radical (OH) uptake by organic aerosols, followed by heterogeneous oxidation, happens nearly at the collision frequency. Oxidation complicates the use of organic molecular markers such as hopanes for source apportionment, since receptor models assume markers are stable during transport.
Masahiko Isaka et al.
Journal of natural products, 74(10), 2143-2150 (2011-10-15)
Seven new lanostane-type triterpenes, hypocrellols A-G (1-7), and six new hopane-type triterpenes, 7β,15α-dihydroxy-22(29)-hopene (8), 3β,7β-dihydroxy-22(29)-hopene (9), 3β-acetoxy-15α-hydroxy-22(29)-hopene (10), 3β,7β,15α,22-tetrahydroxyhopane (11), 3β-acetoxy-7β,15α,22-trihydroxyhopane (12), and 7β,15α,22-trihydroxyhopane (13), were isolated from the scale insect pathogenic fungus Hypocrella sp. BCC 14524. The structures of
Martin Blumenberg et al.
FEMS microbiology letters, 293(1), 73-78 (2009-02-19)
Hopanoids are important lipid components of many bacterial groups and are therefore ubiquitous in soils, sediments, and rocks. Until recently, it was believed that the synthesis of hopanoids is restricted to at least microaerophilic bacteria and consequently geological findings of
Paula V Welander et al.
Proceedings of the National Academy of Sciences of the United States of America, 107(19), 8537-8542 (2010-04-28)
The rise of atmospheric oxygen has driven environmental change and biological evolution throughout much of Earth's history and was enabled by the evolution of oxygenic photosynthesis in the cyanobacteria. Dating this metabolic innovation using inorganic proxies from sedimentary rocks has
Sources of polycyclic aromatic hydrocarbons (PAHs) in street dust in a tropical Asian mega-city, Bangkok, Thailand.
Boonyatumanond R, et al.
The Science of the Total Environment, 384(1-3), 420-432 (2007)
Masahiko Isaka et al.
Journal of natural products, 74(4), 782-789 (2011-04-09)
A new cyclohexadepsipeptide, conoideocrellide A (1), its linear derivatives, conoideocrellides B-D (2-4), three new hopane triterpenoids (5-7), two new bioxanthracenes (9 and 10), and a new isocoumarin glycoside (13) were isolated from the scale insect pathogenic fungus Conoideocrella tenuis BCC
Emily A Weitkamp et al.
Environmental science & technology, 42(21), 7950-7956 (2008-11-27)
Triterpanoid hopanes and steranes are petroleum biomarkers used to apportion fine particulate matter to motor vehicle emissions. To investigate the chemical stability of these compounds, aerosolized motor oil was exposed to the hydroxyl radical (OH) in a smog chamber and
Y Subhash et al.
International journal of systematic and evolutionary microbiology, 64(Pt 12), 4129-4133 (2014-09-23)
Strain JC245(T) was isolated from a sand sample, and appeared as dark pink colonies on agar plates with cells staining Gram-negative. Catalase and oxidase activities were positive. Casein was hydrolysed while chitin, gelatin and starch were not. Major (>5 %) fatty
Li-guo Guo et al.
Huan jing ke xue= Huanjing kexue, 31(8), 1897-1903 (2010-11-26)
Biodegradabilities of several hydrocarbon biomarker groups, including isoprene, hopanes and steranes in a medium-crude oil BZ34-1 and a heavy-crude oil SZ36-1 from offshore, were determined under laboratory conditions. The results of GC-MS analysis showed that isoprene biomarkers such as pristane
J P Sáenz et al.
Geobiology, 10(4), 311-319 (2012-02-15)
Cyanobacteria are key players in the global carbon and nitrogen cycles and are thought to have been responsible for the initial rise of atmospheric oxygen during the Neoarchean. There is evidence that a class of membrane lipids known as hopanoids
Bo Gao et al.
Environmental science and pollution research international, 20(4), 2398-2409 (2012-08-29)
From 28 November to 23 December 2009, 24-h PM2.5 samples were collected simultaneously at six sites in Guangzhou. Concentrations of 18 polycyclic aromatic hydrocarbons (PAHs) together with certain molecular tracers for vehicular emissions (i.e., hopanes and elemental carbon), coal combustion
Marianthi-Anna Kioumourtzoglou et al.
Environmental health : a global access science source, 12(1), 68-68 (2013-08-29)
Fine particle (PM2.5) pollution related to combustion sources has been linked to a variety of adverse health outcomes. Although poorly understood, it is possible that organic carbon (OC) species, particularly those from combustion-related sources, may be partially responsible for the
Fang Wang et al.
Journal of Asian natural products research, 12(1), 94-97 (2010-04-15)
Phytochemical investigation of the whole plant of Dicranostigma leptopodum (Maxim) Fedde led to the isolation of a new hopane triterpene, dicranostigmone (1), and a known compound, erythrodiol-3-O-palmitate (2). The structure of the new compound (1) was elucidated by various spectroscopic
Polycyclic aromatic hydrocarbon (PAHs) and hopanes in stranded tar-balls on the coasts of Peninsular Malaysia: applications of biomarkers for identifying sources of oil pollution.
Zakaria MP, et al.
Marine Pollution Bulletin, 42(12), 1357-1366 (2001)
Y Subhash et al.
International journal of systematic and evolutionary microbiology, 64(Pt 7), 2238-2243 (2014-04-09)
Strain JC216(T) was isolated from a contaminated Petri dish. Colonies were of pale yellow colour and cells were Gram-stain-negative, oxidase-positive and catalase-positive. Chitin, starch and gelatin were not hydrolysed. Strain JC216(T) contained C18 : 1ω7c/C18 : 1ω6c, C16 : 1ω7c/C16
Satoshi Irei et al.
Journal of analytical methods in chemistry, 2017, 3504274-3504274 (2017-10-28)
To study the origins of airborne particulate organic matter in southern Ontario, molecular marker concentrations were studied at Hamilton, Simcoe, and York Gateway Tunnel, representing industrial, rural, and heavy traffic sites, respectively. Airborne particulate matter smaller than 10
H G M Edwards et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 78(1), 191-195 (2010-11-06)
The aim of this work is to investigate the viability and potential of three groups of organic compounds as biomarkers in a future robotic analytical exploration of Mars. The three compounds have been identified as suitable candidates for potential biomarkers
Michel Rohmer
Lipids, 43(12), 1095-1107 (2008-11-18)
Investigations on the biosynthesis of bacterial triterpenoids of the hopane series led to the unexpected discovery of an alternative mevalonate independent pathway for the formation of isoprene units. Methylerythritol phosphate, already presenting the C5 branched isoprene skeleton, is the key
D M Doughty et al.
Geobiology, 7(5), 524-532 (2009-10-09)
2-Methylhopanes, molecular fossils of 2-methylbacteriohopanepolyol (2-MeBHP) lipids, have been proposed as biomarkers for cyanobacteria, and by extension, oxygenic photosynthesis. However, the robustness of this interpretation is unclear, as 2-methylhopanoids occur in organisms besides cyanobacteria and their physiological functions are unknown.
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