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  • Inorganic Chemistry  (1)
  • preservation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Preservation of immobilized bacterial cell-matrix by drying for direct use in microbial sensors (1993)
    Springer
    World journal of microbiology and biotechnology 9 (1993), S. 243-247 
    Details
    ISSN: 1573-0972
    Keywords: Bacterial immobilized cells ; liquid-drying ; preservation ; microbial biosensors ; xenobiotics detection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A simple and effective method for the drying of immobilized bacterial cells to be used directly in a microbial biosensor for measurement of activity is reported. As a case example, plasmid-bearing cells of Alcaligenes eutrophus JMP 134, DSM 4058 were immobilized on various carriers and liquid-dried. The dried cell-matrix was used directly after rehydration/reactivation as the biological component of a biosensor for determining the concentration of xenobiotic compounds in the environment. Good viability results were obtained after long-term storage and cells exhibited no loss of plasmids responsible for the 2,4-dichlorophenoxyacetic acid (2,4-D) degradation. The activity of the cells for 2,4-D was proved using a respiration electrode. No time-consuming, repeated cell cultivation and harvesting was required, as the cells preserved from a single batch served as a continuous source for activity measurements. Many other microbial cultures can be preserved by this method and the cells preserved in the form of immobilized dried cell-matrix can be used directly to perform enzymatic tests, complex biochemical conversions and for production in the reactors. The dried cell-matrix can serve as a stable interchangeable component for a multipurpose biosensor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327847
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  • 2
    Electronic Resource
    Electronic Resource
    Darstellung und Kristalldaten von LiBa2EuO4 (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 354 (1967), S. 27-29 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The new quaternary compound LiBa2EuO4 may be prepared from stoichiometric amounts of LiEuO2 and BaO by heating at 700°C under an inert atmosphere. According to Debye-Scherrer photographs. LiBa2EuO4 and LiEu3O4 are isostructural (space group Pbnm). The orthorhombic unit cell with a = 11.883, b = 12.130 and c = 3.601 Å contains 4 formula units LiBa2EuO4 (calculated density 6.369 g/cm3).
    Notes: Die neue quaternäre Verbindung LiBa2EuO4 kann aus den stöchiometrisch erforderlichen Mengen LiEuO2 und BaO durch Erhitzen bei 700°C unter Schutzgas erhalten werden. Wie aus DEBYE-SCHERRER-Aufnahmen hervorgeht, ist LiBa2EuO4 mit LiEu3O4 isotyp (Raumgruppe Pbnm). Die rhombische Elementarzelle mit a = 11,883, b = 12,130 und c = 3,601 Å enthält 4 Formeleinheiten LiBa2EuO4 (berechnete Dichte 6,369 g/cm3).
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673540107
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