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1Author    NigelC P Baldwin, BarneW. Bycroft, PaulM. Dewick, John GilbertRequires cookie*
 Title    Metabolie Conversions of Trichothecene Mycotoxins: Biotransformation of 3-AcetyldeoxynivaIenoI into Fusarenon-X  
 Abstract    The trichothecene mycotoxin 3-acetyldeoxynivalenol was transformed by cultures of the diace-toxyscirpenol producer Fusarium sp. strain C37410-90 into four compounds, identified as deoxy-nivalenol, 15-acetyldeoxynivalenol, 3,15-diacetyldeoxynivalenol and fusarenon-X. The major transformations are the result of specific esterification and de-esterification processes, but the production of fusarenon-X involves in addition a novel 4ß-hydroxylation of the trichothecene ring system itself. 
  Reference    Z. Naturforsch. 41c, 845 (1986); received April 21 1986 
  Published    1986 
  Keywords    Mycotoxin, Trichothecene, Fusarium, Biotransformation, 3-Acetyldeoxynivalenol 
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 TEI-XML for    default:Reihe_C/41/ZNC-1986-41c-0845.pdf 
 Identifier    ZNC-1986-41c-0845 
 Volume    41 
2Author    A. A. Gbolade, G. B. LockwoodRequires cookie*
 Title    Biotransformation of Monoterpenes by Polyurethane Foam-Immobilized Cells of Petroselinum crispum (Mill) Nyman  
 Abstract    Cells o f Petroselinum crispum cv. "Paramount" and "Plain-leaved" immobilized in polyure­ thane foam retained the biotransformational characteristics o f their freely suspended cells for certain monoterpenic substrates. Immobilized cells o f both cultivars were more efficient than their free cells in isomerizing geraniol into nerol, but less efficient (< 60%) in reducing the alde­ hydes, citral and citronellal. M aintenance o f the immobilized cells under the condition o f growth limitation did not enhance the efficiency o f the biochemical reactions. Under the same condition, the freely suspended cells o f cult. "Paramount" exhibited higher efficiency (up to 1.6 times) o f biotransformation o f citral when compared to those in sucrose-supplemented me­ dia. This investigation lends support to the view that the biochemical productivity o f cultured plant cells for especially monoterpenoids may not necessarily be improved upon immobiliza­ tion. 
  Reference    Z. Naturforsch. 45c, 245 (1990); received N ovem ber 24 1989 
  Published    1990 
  Keywords    Petroselinum, Biotransformation, Immobilized Cells, M onoterpenes, Polyurethane Foam 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0245.pdf 
 Identifier    ZNC-1990-45c-0245 
 Volume    45 
3Author    Afgan Farooq3, Satoshi TaharaabRequires cookie*
 Title    Biotransformation of Two Cytotoxic Terpenes, a-Santonin and Sclareol by Botrytis cinerea  
 Abstract    Two cytotoxic terpenes, a-santonin (1) and sclareol (3) were biotransformed by a plant pathogenic fungus Botrytis cinerea to produce oxidized metabolites in high yields. a-Santonin (1) on fermentation with the fungus for ten days afforded a hydroxylated metabolite iden­ tified as llß-hydroxy-a-santonin (2) in a high yield (83%), while sclareol (3) was metabolized to epoxysclareol (4) (64%) and a new compound 8-deoxy-14,15-dihydro-15-chloro-14-hy-droxy-8,9-dehydrosclareol (5) (7%), representing a rare example of microbial halogenation. 
  Reference    Z. Naturforsch. 55c, 713—717 (2000); received May 15/June 14 2000 
  Published    2000 
  Keywords    Biotransformation, a-Santonin, Sclareol, Botrytis cinerea 
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 TEI-XML for    default:Reihe_C/55/ZNC-2000-55c-0713.pdf 
 Identifier    ZNC-2000-55c-0713 
 Volume    55