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  • 1
    Electronic Resource
    Electronic Resource
    Mutants of carotene production in Blakeslea trispora (1995)
    Springer
    Applied microbiology and biotechnology 42 (1995), S. 836-838 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  The filamentous fungus Blakeslea trispora, an industrial carotene source, contains β-carotene and precursors of its synthesis – phytoene, phytofluene, lycopene, and γ-carotene. Strain improvement through mutagenesis is difficult because all life stages are multinucleate. Mutants have been obtained following exposure of wild-type spores to N-methyl-N′-nitro-N-nitroso- guanidine. Changes in the colour of the mycelia reflect variations in the accumulation of various precursors and the final product. Quantitative analysis of the mutants leads to the conclusion that the biosynthetic pathway is similar to that of the related fungus Phycomyces blakesleeanus, but the regulation is completely different. In particular, interruption of the pathway does not lead to overacummulation of precursors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050339
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Mutants of carotene production in Blakeslea trispora (1995)
    Springer
    Applied microbiology and biotechnology 42 (1995), S. 836-838 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The filamentous fungus Blakeslea trispora, an industrial carotene source, contains β-carotene and precursors of its synthesis — phytoene, phytofluene, lycopene, and γ-carotene. Strain improvement through mutagenesis is difficult because all life stages are multinucleate. Mutants have been obtained following exposure of wild-type spores to N-methyl-N′-nitro-N-nitrosoguanidine. Changes in the colour of the mycelia reflect variations in the accumulation of various precursors and the final product. Quantitative analysis of the mutants leads to the conclusion that the biosynthetic pathway is similar to that of the related fungus Phycomyces blakesleeanus, but the regulation is completely different. In particular, interruption of the pathway does not lead to overacummulation of precursors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00191178
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Synthetic ion exchange resins from α-pinene (1974)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 18 (1974), S. 1585-1585 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1974.070180527
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Studies on α-pinene-furfural-based cation exchange resins. I. Preparation of polymeric compositions and resins (1976)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 20 (1976), S. 2229-2237 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A crosslinked polymer based on α-pinene and furfural suitable for processing into ion exchangers was prepared. The polymer has been processed chemically into different types of cation exchange resins. The role of various parameters such as catalyst concentration, proportion of crosslinking agent, etc., for preparing the polymer is systematically studied and presented. Similarly, the conditions for preparing the various cation exchange resins (sulfonic, phosphonic, and hydroxy phosphonic acid type from the polymer) are also described. A probable/possible composition for the repeating unit in the basic polymer is proposed and supported by experimental evidences.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1976.070200818
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Studies on α-pinene-furfural-based cation exchange resins. II. Characterization and equilibrium studies (1976)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 20 (1976), S. 2239-2247 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The cation-exchange resins based on α-pinene and furfural were characterized systematically as to their polyfunctionality, rate of exchange and thermal stability. Equilibrium studies for univalent and bivalent ions were also conducted.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1976.070200819
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    Paper (German National Licenses)
    Fulltext
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