Articles by Keyword: Extraction

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We found 21 results for you
  1. Timber Harvesting in South Africa—Past, Present, Future

    Item type: Journal Article • Journal: South African Forestry Journal
    After a short description of South African timber harvesting practices in the past, the present situation in terms of machine population and the current harvesting and extraction methods is discussed in more detail.
  2. Barley cultivar identification by acid Polyacrylamide gel electrophoresis of hordein proteins

    Barley cultivar identification by acid Polyacrylamide gel electrophoresis of hordein proteins

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Methods are described for the extraction and separation of hordein proteins of barley by acid Polyacrylamide gel electrophoresis as a means of identifying different cultivars. Experimental conditions for the extraction of the proteins from single kernels and from corresponding flour...
  3. Recommended modifications to the spectrophotometric determination of molybdenum as Fe[MoO(SCN)<sub>5</sub>]

    Recommended modifications to the spectrophotometric determination of molybdenum as Fe[MoO(SCN)<sub>5</sub>]

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The classical method for the determination of molybdenum in plant material by the formation of an iron-molybdenum- thiocyanate complex, which is extracted with alcohols, ethers and carbon tetrachloride from a dilute acid solution, is basically very suitable for the detection...
  4. Wheat cultivar identification by electrophoretic analysis of gliadin proteins

    Wheat cultivar identification by electrophoretic analysis of gliadin proteins

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Polyacrylamide gel electrophoresis of gliadin proteins in an acid medium was used to identify different spring wheat cultivars. Gliadins were extracted from single kernels or corresponding flour samples using different solvents. Gliadin electrophoretogram formulae using relative band mobilities and staining...
  5. Comparison of protein extraction procedures to assess the effect of quantitative protein composition on the bread-making quality of South African winter wheat cultivars

    Comparison of protein extraction procedures to assess the effect of quantitative protein composition on the bread-making quality of South African winter wheat cultivars

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A suitable technique for the extraction of wheat flour protein fractions was pursued to assess the effect of quantitative protein composition on the bread-making quality of winter wheat cultivars on a large scale. Nine procedures involving the use of different...
  6. Identification of tall fescue grass cultivars by sodium dodecyl sulphate and acid polyacrylamide gel electrophoresis

    Identification of tall fescue grass cultivars by sodium dodecyl sulphate and acid polyacrylamide gel electrophoresis

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Protein banding patterns of seed obtained by sodium dodecyl sulphate Polyacrylamide gel electrophoresis (SDS-PAGE) or acid Polyacrylamide gel electrophoresis (A-PAGE) were used to distinguish between different tall fescue (Festuca arundinacea Shreb.) grass cultivars. An electrophoretic formula was determined for each...
  7. Soil water use and rooting depth of Italian ryegrass (<em>Lolium multiflorum</em> Lam.) in a small plot experiment

    Soil water use and rooting depth of Italian ryegrass (<em>Lolium multiflorum</em> Lam.) in a small plot experiment

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Italian ryegrass is planted mainly under irrigation in the summer rainfall region of South Africa. Irrigation practices are often based on the assumption that Italian ryegrass has an extremely shallow root system. A small plot experiment was conducted to ascertain...
  8. Extraction and electrophoretic separation of proteins from leaves of scions and rootstocks of <em>Vitis</em> cultivars

    Extraction and electrophoretic separation of proteins from leaves of scions and rootstocks of <em>Vitis</em> cultivars

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Proteins were extracted and separated by SDS-PAGE from leaves of scions and rootstocks of different Vitis cultivars. Banding patterns were used to identify the different cultivars after extraction of the proteins with a medium containing Tris-HCI (0.68 M, pH 7.8),...
  9. Fosfor in geselekteerde onversteurde en bewerkte Suid-Afrikaanse gronde 1. Totale, anorganiese en organiese fosfor

    Fosfor in geselekteerde onversteurde en bewerkte Suid-Afrikaanse gronde 1. Totale, anorganiese en organiese fosfor

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Min is bekend oor die effek van boerderypraktyke soos bewerking, bemesting en bekalking op die fosforfraksies in gronde van die somerreënvalgebied (25°-30°S; 24°–30°O) in Suid-Afrika. Die doelstellings van die studie was om die effek van gewasverbouing op die totale (Pt),...
  10. Fosfor in geselekteerde onversteurde en bewerkte Suid-Afrikaanse gronde 2. Anorganiese en organiese fosforfraksies

    Fosfor in geselekteerde onversteurde en bewerkte Suid-Afrikaanse gronde 2. Anorganiese en organiese fosforfraksies

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Daar is voorheen vasgestel dat gewasverbouing die anorganiese (Pa) en organiese (Po) fosforinhoud van gronde vanaf die somerreënvalgebied (25°-30° S; 24°-30° O) in Suid-Afrika beïnvloed het. Dus kan die Pa- en Po-fraksies, wat in planttoeganklikheid varieer, ook moontlik beïnvloed word...