Hydrocarbon Fractions
Mostrando 25-36 de 38 artigos, teses e dissertações.
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25. Evaluation of Inoculum Addition To Stimulate In Situ Bioremediation of Oily-Sludge-Contaminated Soil
A full-scale study evaluating an inoculum addition to stimulate in situ bioremediation of oily-sludge-contaminated soil was conducted at an oil refinery where the indigenous population of hydrocarbon-degrading bacteria in the soil was very low (103 to 104 CFU/g of soil). A feasibility study was conducted prior to the full-scale bioremediation study. In this
American Society for Microbiology.
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26. Lipids of Pseudomonas aeruginosa Cells Grown on Hydrocarbons and on Trypticase Soy Broth1
Lipids were extracted from cells of Pseudomonas aeruginosa grown on a pure hydrocarbon (tridecane), mixed hydrocarbons (JP-4 jet fuel), and on Trypticase Soy Broth. Total lipids produced from each substrate represented from 7.1 to 8.2% of cellular dry weight, of which 5.0 to 6.4% were obtained before cellular hydrolysis (free lipids) and 1.7 to 2.0% were ext
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27. Isolation and characterization of membranes from a hydrocarbon-oxidizing Acinetobacter sp.
Membranes were isolated and purified from nutrient broth-yeast extract- and hexadecane-grown cells of Acinetobacter sp. strain HO1-N. Two membrane fractions were isolated from nutrient broth-yeast extract-grown cells, the cytoplasmic membrane and the outer membrane. In addition to these two membrane fractions, a unique membrane fraction was isolated from hex
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28. Influence of Hydrocarbons and Derivatives on the Polar Lipid Fatty Acids of an Acinetobacter Isolate
The effects of hydrocarbons and hydrocarbon derivatives as growth substrates on the polar lipid fractions of an Acinetobacter isolate were studied. Tetradecane, hexadecane, and octadecane resulted in the incorporation of substantial quantities of equivalent-chain-length fatty acids into cellular lipids. Cells cultured on nonane, the only odd-numbered alkane
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29. LIPIDS OF SARCINA LUTEA I. : Fatty Acid Composition of the Extractable Lipids
Huston, Charles K. (U.S. Army Biological Laboratories, Fort Detrick, Frederick, Md.), and Phillip W. Albro. Lipids of Sarcina lutea. I. Fatty acid composition of the extractable lipids. J. Bacteriol. 88:425–432. 1964.—The extractable lipids of Sarcina lutea were separated into several fractions by a combination of column and thin-layer chromatography. Qu
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30. Evidence for an Increase in Microviscosity of Plasma Membranes from Soybean Hypocotyls Induced by the Plant Hormone, Indole-3-Acetic Acid 1
The plant hormone indole-3-acetic acid (IAA or auxin) added at a concentration for half-maximal promotion of cell elongation (1 μm) caused an increase of 25% in the fluorescence polarization of the membrane-bound probe N-phenyl-1-naphthylamine, when added to fractions enriched in plasma membranes from soybean hypocotyls (Glycine max L. var. Wayne), with no
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31. Sorting of Lens Aquaporins and Connexins into Raft and Nonraft Bilayers: Role of Protein Homo-Oligomerization
Two classes of channel-forming proteins in the eye lens, the water channel aquaporin-0 (AQP-0) and the connexins Cx46 and Cx50, are preferentially located in different regions of lens plasma membranes (1,2). Because these membranes contain high concentrations of cholesterol and sphingomyelin, as well as phospholipids such as phosphatidylcholine with unsatura
The Biophysical Society.
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32. Effects of chronic ethanol consumption on hepatic metabolism of aromatic and chlorinated hydrocarbons in rats.
The activities of liver drug-metabolising enzymes for 16 aromatic or chlorinated hydrocarbons were measured in male rats after a three-week daily intake of ethanol amounting to 30% of total energy intake. Although the ethanol feeding produced only a slight increase in the microsomal cytochrome P-450 content, it increased the in-vitro metabolism of most hydro
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33. Rumen Bacterial and Protozoal Responses to Insecticide Substrates
Insecticides containing organophosphate, chlorinated hydrocarbon, and carbamate were tested with bovine ruminal ingesta fractions. Rumen bacteria exposed to insecticide levels of 0 to 500 ppm in rumen fluid for 4 hr were inoculated into rumen fluid-starch feed extract medium. No apparent significant bacterial count inhibitions were noted. Also, when insectic
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34. Cuticular hydrocarbons mediate discrimination of reproductives and nonreproductives in the ant Myrmecia gulosa
In many species of social insects, the cuticular hydrocarbons of adults vary with both colony identity and individual physiology (oogenesis). Such variations have been shown in some ants and social wasps to function in nestmate recognition, but as yet there is no demonstration of their use by workers to recognize egg layers. We report that in the ant Myr
National Academy of Sciences.
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35. Oxidation of biphenyl by a multicomponent enzyme system from Pseudomonas sp. strain LB400.
Pseudomonas sp. strain LB400 grows on biphenyl as the sole carbon and energy source. This organism also cooxidizes several chlorinated biphenyl congeners. Biphenyl dioxygenase activity in cell extract required addition of NAD(P)H as an electron donor for the conversion of biphenyl to cis-2,3-dihydroxy-2,3-dihydrobiphenyl. Incorporation of both atoms of molec
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36. Position-specific oxygenation of benzo(a)pyrene by different forms of purified cytochrome P-450 from rabbit liver.
High-pressure liquid chromatography was used to detect oxygenated products of benzo[a]pyrene formed in a reconstituted microsomal mixed-function oxidase system containing cytochrome P-450 (P-450LM), phospholipid, and NADPH-cytochrome P-450 reductase (NADPH: ferricytochrome oxidoreductase, EC 1.6.2.4). Three cytochrome fractions purified from a single source,