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  • Cyanide  (1)
  • Heterocycles  (1)
  • Wiley-Blackwell  (2)
  • American Physical Society
  • 2005-2009
  • 1995-1999  (2)
Collection
Publisher
  • Wiley-Blackwell  (2)
  • American Physical Society
Years
  • 2005-2009
  • 1995-1999  (2)
Year
  • 1
    ISSN: 1040-0397
    Keywords: Cyanide ; Saccharomyces cerevisiae ; Respiration inhibition ; Flow system ; Reactor-type microbial sensor ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A flow system for cyanide detection using Saccharomyces cerevisiae is described. This sensor system consists of two oxygen electrodes and immobilized S. cerevisiae whose respiration activity is measured by the oxygen electrodes. Since cyanide inhibits S. cerevisiae's respiration, it can be detected by measuring this inhibition. Two types of systems were constructed, characterized and compared. One is a membrane-type flow system in which S. cerevisiae was immobilized onto a cellulose membrane. The other is a reactor-type flow system in which S. cerevisiae was immobilized onto the glass beads. The sensor response was examined in the range from 0 to 15μM. The reactor-type sensor system displayed lower detection limit (0.15 μM) and better stability (16 days).
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-193X
    Keywords: Heterocycles ; Lipases ; Oxidations ; Pheromones ; Stegobinone ; Stegobium paniceum ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Crystalline (-)-stegobinone [(2S,3R,1′R)]-2,3-dihydro-2,3,5-trimethyl-6-(1′-methyl-2′-oxobutyl)-4H-pyran-4-one (1)], the major component of the female-produced sex pheromone of the drugstore beetle (Stegobium paniceum L.), was synthesized by oxidation of crystalline and the minor component (-)-stegobiol [(2S,3R,1′S,2′S)-2,3-dihydro-2,3,5-trimethyl-6-(2′-hydroxy-1′-methylbutyl)-4H-pyran-4-one (2)] under the appropriate conditions using Jones's chromic acid, Dess-Martin's periodinane or Ley's ruthenium reagent. The latter (2) was synthesized by employing lipase and the Sharpless epoxidation for the introduction of the proper chiral centers. The streostructure of 1 was comfirmed by X-ray analysis.
    Type of Medium: Electronic Resource
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