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  • Sulphur cycle  (3)
  • Accumulated enzymes  (1)
  • Acrylamide synthesis  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Sulphur oxidation by a Streptomyces sp. growing in a carbon-deficient medium and autoclaved soil (1984)
    Springer
    Archives of microbiology 139 (1984), S. 272-276 
    Details
    ISSN: 1432-072X
    Keywords: Heterotrophic sulphur oxidation ; Oligotrophy ; Sulphur cycle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Streptomyces colonies, apparently all of the same species, were isolated from a range of soils using a polysulphide medium lacking an organic carbon source. Growth on this medium, and clearing of the otherwise white, opaque overlay, suggested that the organisms were capable of growing autotrophically. However, investigation of one of these isolates showed that it was unable to fix 14CO2 and did not possess the enzyme ribulose bisphosphate carboxylase, showing that it was incapable of autotrophic growth. The isolate oxidized elemental sulphur, thiosulphate and tetrathionate to sulphate in vitro in carbon-deficient medium, and also oxidized elemental sulphur to sulphate when inoculated into autoclaved soil supplemented with sulphur. It also oxidized polysulphide when growing on Czapek Dox and plate count agars. The isolate can therefore grow heterotrophically in both carbon-rich media and in media lacking organic carbon — presumably by scavenging organic carbon from the laboratory atmosphere. The possible role of these organisms in sulphur oxidation in soils is commented upon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402013
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Microbial growth on polluted leaf and litter leachates: Effects on leachate pH and sulphate concentration (1986)
    Springer
    Plant and soil 92 (1986), S. 303-308 
    Details
    ISSN: 1573-5036
    Keywords: Acid rain ; Sulphur cycle ; Sulphur mineralization ; Aureobasidium pullulans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Leaves and litter ofAcer pseudoplatanus L. (sycamore) were collected from woodland downwind of a coking works and from a site close to the industrial city of Sheffield and leached with water or simulated acid rain (pH 4.0). The effects of microbial growth on litter leachate, pH and sulphate concentration were determined by (a) allowing the indigenous litter flora to develop or (b) inoculating the fungusAureobasidium pullulans into sterilized leachates amended with synthetic aphid honeydew as carbon source. In both experiments microbial growth generally increased the pH and sulphate concentration of the leachates, independent of the origin of the litter or the leaching agent. The growth ofA. pullulans however, generally decreased the pH and sulphate content of sycamore leaf leachates. We conclude that the microbial mineralization of organic sulphur in deciduous litter leachate can act as a source of sulphate which could enhance cation leaching in atmospheric-pulluted soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372644
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Assay and properties of alginate lyase and 1, 3-β-glucanase in intertidal sands (1981)
    Springer
    Plant and soil 59 (1981), S. 83-89 
    Details
    ISSN: 1573-5036
    Keywords: Accumulated enzymes ; Alginate degradation ; Laminarin ; Soil enzymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Alginate lyase and 1, 3-β-glucanase activity were detected in intertidal sands below decomposing seaweeds (Fucus sp. andLaminaria sp). Linear relationships between activity and sand weight; length of incubation and substrate concentration, were established for both enzymes. Other properties of these enzymes in intertidal sands are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183594
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of organic matter on sulphur oxidation in soil and influence of sulphur oxidation on soil nitrification (1986)
    Springer
    Plant and soil 96 (1986), S. 369-376 
    Details
    ISSN: 1573-5036
    Keywords: Nitrification ; Organic matter ; Sulphur cycle ; Sulphur oxidation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of wheat straw and pressed sugar beet pulp on sulphur oxidation were determined in a loam soil amended with 1% (w/w) elemental sulphur. Wheat straw stimulated the oxidation of elemental sulphur over the first 2 to 3 weeks of the incubation period, resulting in an increase in LiCl-extractable sulphate. After 4 to 7 weeks incubation however, the only significant increase in soil sulphate followed the 1% straw addition, while at week 7 sulphate concentrations in the 0.25% and 5.0% straw amended soils were lower than the control. Pressed sugar beet pulp (1% w/w) initially stimulated the oxidation of elemental sulphur in the soil, but by weeks 3 to 7 of the incubation period rates of oxidation in pulp-amended soils were lower than the control. Towards the end of the incubation period however, sulphate concentrations in the amended soils exceeded the control values, significantly so by week 11. The concentration of thiosulphate and tetrathionate also increased in soils receiving sugar beet pulp. Nitrification was inhibited in soils in which sulphur oxidation was actively occurring. Although possible alternatives are mentioned, such inhibition appears to result from a decrease in soil pH brought about by the oxidation of elemental sulphur to sulphuric acid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02375141
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    High-performance liquid chromatographic analyses for use in the acrylamide synthesis process (1979)
    Springer
    Chromatographia 12 (1979), S. 709-712 
    Details
    ISSN: 1612-1112
    Keywords: Acrylamide synthesis ; High-performance liquid chromatography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Two liquid chromatographic methods are described for the separation and determination of components in the production of acrylamide by the catalytic hydration of acrylonitrile. The first of these provides a rapid technique by which concentrations and conversion can be directly determined for process control applications, whilst the second represents a more rigorous separation of all possible impurities for quality control purposes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02262447
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    Paper (German National Licenses)
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