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  • 1980-1984  (3)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Histofluorescence study and biochemical assay of catecholamines (Dopamine and Noradrenaline) during the course of arm-tip regeneration in the starfish, Asterina gibbosa (Echinodermata, Asteroidea) (1981)
    Springer
    Histochemistry and cell biology 72 (1981), S. 149-154 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In the starfish, Asterina gibbosa, the histofluorescence method gives evidence of an aminergic activity in the course of arm-tip regeneration. This activity can be detected as variations in the localization and intensity of a green fluorescence in the nerve structures of the arm, the radial nerve, and the circumoral nerve ring connected to it. Biochemical assays reveal that dopamine levels increase on the 2nd and 4th days of regeneration, when the blastema is forming and when differentiation commences. The level of noradrenaline also increases on the 2nd day after amputation of the arm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00496789
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    β-Glucosidase production by Aspergillus phoenicis in solid state fermentation (1984)
    Springer
    Biotechnology letters 6 (1984), S. 55-60 
    Details
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary β-glucosidase production was studied in solid-state cultivation by Aspergillus phoenicis on sugar beet pulps. The experiments were carried out in column incubators aerated with humidified air, at 30 °C. Results of physiological studies showed that the production of β-glucosidase from beet pulps in the solid state fermentation required : 70% moisture content, initial pH of about 4, and 107 spores/g substrate. β-glucosidase produced under these conditions could be removed from the solid medium with water, or stored in the form of a dried fermented product, for a direct use in the saccharification reactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00128230
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    β-Glucosidase production in agitated solid fermentation, study of its properties (1984)
    Springer
    Biotechnology letters 6 (1984), S. 451-456 
    Details
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary β-Glucosidase production by Aspergillus phoenicis was studied in dynamic solid fermentation, on sugar beet pulps. The assays were conducted in agitated tank reactor which allowed for the homogenization of the medium and the regulation of essential parameters: temperature, aeration, pH and humidity. In order to compare some properties of the β-glucosidase produced in both liquid and solid cultures, A. phoenicis was also grown on starch in submerged culture. The enzymes produced in solid and liquid cultures have the same optimum pH of about 4.5. β-Glucosidase synthetized in solid culture is significantly more thermostable than that from liquid culture and is maximally active at 65°C compared to 60°C for enzyme from liquid culture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00129308
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    Paper (German National Licenses)
    Fulltext
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