Results 151 to 160 of about 2,631 (199)

Production of Indole by Escherichia coli

Nature, 1948
THE mechanism of the production of indole by Escherichia coli has attracted the attention of many workers since Hopkins and Cole1 first demonstrated that the precursor of indole is tryptophan. The problem is an intriguing one among the bacterial degradation of amino-acids, inasmuch as fission of a carbon-carbon bond occurs at a position in the molecule
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THE REACTION PRODUCTS OF INDOLS WITH DIAZOESTERS

Canadian Journal of Research, 1935
In conformity with findings of previous work on indols and in contradistinction to more recent work on pyrrols, the action of diazoesters on indol leads to 3-substituted as well as a small amount of 1:3-disubstituted derivatives. The formation of 2-substituted derivatives could not be demonstrated.
Richard W. Jackson, Richard H. Manske
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Production of indole diterpenes by Aspergillus alliaceus

Biotechnology and Bioengineering, 2006
AbstractProduction of two related indole diterpenes (differing by a dimethyl leucine side chain) by Aspergillus alliaceus was improved through several pilot scale fermentations. Media were optimized through focus primarily on initial increases, as well as mid‐cycle additions, of carbon and nitrogen sources.
B, Junker, A, Walker, N, Connors, A, Seeley, P, Masurekar, M, Hesse   +5 more
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Evolution of benzoxazinone biosynthesis and indole production in maize

Planta, 2001
The synthesis of a diverse spectrum of secondary metabolites has allowed plants to develop sophisticated chemical defense mechanisms. Maize (Zea mays L.), for example, releases a cocktail of volatile compounds when attacked by a caterpillar. These compounds attract a parasitic wasp, which deposits its eggs in the larvae, thereby controlling the ...
A, Gierl, M, Frey
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Sensitive reagents for detection of indole production by bacteria

Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. Series A: Medical Microbiology, Infectious Diseases, Virology, Parasitology, 1986
A number of substituted 4-aminobenzaldehydes were compared with more commonly employed reagents for the detection of indole-producing organisms among the Enterobacteriaceae. Factors such as rate of colour intensity and stability were compared in tests with reference organisms and clinical isolates, and with appropriate concentrations of pure indolic ...
A L, James, P, Yeoman, J W, Rasburn, M, NG   +3 more
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Production and degradation of indole by gram-negative bacteria

Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. Series A: Medical Microbiology, Infectious Diseases, Virology, Parasitology, 1986
The indole reaction is performed in various modifications with regard both to the reagents and to the media used. Especially the medium has hitherto attracted little attention and there are divergent recommendations for its composition. The comparison of some broths without and with addition of tryptophan after incubation with different indole-positive
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Photoreaction of indole-containing mycotoxins to fluorescent products

Mycotoxin Research, 2009
Photochemical reaction of the non-fluorescent mycotoxin cyclopiazonic acid (CPA) to fluorescent products was recently reported. Because CPA contains an indole moiety, believed to contribute to the fluorescence, it was of interest to determine whether the effect might be more generally applicable to indole-containing mycotoxins.
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Some products from nitrosation of indoles

Journal of the Chemical Society, Perkin Transactions 1, 1977
Nitrosation of 1-methylindole with an equimolar amount of nitrous acid gave 5-hydroxy-6,11-dimethylpyrrolo-[2,3-b:4,5-b′]di-indole, and with an excess of nitrous acid 5,11-dimethylpyrazino[2,3-b:5,6-b′]di-indole 6-oxide. Nitrosation of 1-methylindol-3-yl phenyl sulphide gave diphenyl disulphide (23%), 1-methyl-2,3-bis(phenylthio)indole (2.5%), 1-methyl-
Anthony H. Jackson, David N. Johnston, Patrick V. R. Shannon   +2 more
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Structure of an unexpected indole photolysis product

Acta Crystallographica Section C Crystal Structure Communications, 1986
Etude du solvate acetate d'ethyle du tetrahydro-8,9,15,16 5bH, 14bH-tetraaza-5,7a,14,14c benzo [1,2-a:1',2'-c] difluorenecarboxylate-6 de methyle, C 26 H 24 N 4 O 2 •C 4 H 8 O 2 ; affinement jusqu'a R=0 ...
K. Harms, G. M. Sheldrick, K. Brüggemann, L. F. Tietze   +3 more
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ChemInform Abstract: Synthetic Indol Production.

Chemischer Informationsdienst, 1986
AbstractDie Fischersche Indolsynthese wird optimiert.
A. P. USHAKOV, V. E. TIMOFEEV, G. E. KRAMEROVA, Z. A. DUL'TSEVA, I. YA. TYURYAEV, V. S. SHPAK   +5 more
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