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'Bacterial Degradation' in keywords
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1978 (1)
1974 (1)
1Author    E. De Frenne, J. Eberspächer, F. Lingens, W. SchäferRequires cookie*
 Title    Bacterial Hydroxylation of Pyrazon Compounds  
 Abstract    In cell suspensions of bacteria grown with 5-amino-4-chloro-2-phenyl-3 (2H)-pyridazinone (pyra­ zon) as sole source of carbon o-methyl-pvrazon and /n-methyl-pyrazon were converted to the cor­ responding hydroxymethyl compounds. p-Methyl-pyrazon was not metabolized. 
  Reference    (Z. Naturforsch. 29c, 283 [1974]; eingegangen am 14. Dezember 1973) 
  Published    1974 
  Keywords    Bacterial Degradation, Bacterial Hydroxylation, Herbicides 
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 TEI-XML for    default:Reihe_C/29/ZNC-1974-29c-0283.pdf 
 Identifier    ZNC-1974-29c-0283 
 Volume    29 
2Author    Hartmut Blecher, Renate Blecher, Rudolf Müller, Franz LingensRequires cookie*
 Title    Isolierung und Charakterisierung Antipyrin-abbauender Bakterien Isolation and Characterization of Antipyrine-degrading Bacteria  
 Abstract    Five different strains of bacteria ultilizing antipyrine as sole source of carbon were isolated from soil. It was shown by morphological and physiological examinations, that the new isolates are closely related to strains selected with the herbicide chloridazon. A ll of these bacteria are charac­ terized by special features and cannot be classified according to Bergey's Manual of Determinative Bacteriology. Part of the strains which were selected with antipyrine not only grow with antipyrine but also with chloridazon. The others cannot be grown on chloridazon. However, resting cells of the latter group convert chloridazon to its catechol derivative (5-amino-4-chloro-2 (2,3-dihydroxyphenyl) -3 (2H)-pyridazinone). In these bacteria a catechol-2,3-dioxygenase (catechol: oxygen 2,3-oxido-reductase, EC 1.13.11.2) was found which readily catalyzes the cleavage of the catechol derivative of antipyrine (2,3-dimethyl-l-(2,3-dihydroxyphenyl)-pyrazolone (5)). The enzyme shows only slight activity with the corresponding derivative of chloridazon. 
  Reference    Z. Naturforsch. 33c, 120 (1978); eingegangen am 27. Oktober 1977 
  Published    1978 
  Keywords    Antipyrine, Chloridazon, Bacterial Degradation, Catechol: Oxygen 2, 3-Oxidoreductase 
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 TEI-XML for    default:Reihe_C/33/ZNC-1978-33c-0120.pdf 
 Identifier    ZNC-1978-33c-0120 
 Volume    33