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  • Blackwell Publishing Ltd  (2)
  • 1975-1979  (2)
  • 1950-1954
  • 1979  (2)
  • 1
    Electronic Resource
    Electronic Resource
    COMPARISON OF TWO RADIOASSAY METHODS FOR CYANOCOBALAMIN IN SEAFOODS (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Concentrations of cyanocobalamin (vitamin B12) ranging from 0.64-186.6 μg/100g (fresh weight-edible tissue) were determined for seven different varieties of seafoods by two radioisotope dilution (RID) methods. The correlation coefficient for 156 RID seafood assays using both techniques was 0.99 and the mean relative standard deviation for samples was 12.05 ± 5.19%. The reproducibility and comparability of the two RID assays was attributable to the uniform implementation of a rigorous extraction procedure which isolated cyanocobalamin in an aqueous phase prior to radiometric evaluation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1979.tb03451.x
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  • 2
    Electronic Resource
    Electronic Resource
    Gibberellin-Growth Retardant Interactions on the Growth and Flowering of Clerodendrum thomsoniae (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 45 (1979), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Gibberellin-growth retardant interactions on the vegetative growth and flowering of the vine Clerodendrum thomsoniae Balf. were studied using both exogenous treatments and biologically testing the acid fraction attained from the plant extract. The growth retardant, ancymidol, greatly retarded stem elongation and markedly increased flowering under inductive environments. Gibberellin A3 (GA3) application to the shoot tip stimulated vine growth, prevented flowering under inductive environments, and completely overcame ancymidol-induced effects. In contrast to GA3, treatment with GA7 had little effect on vegetative growth but increased flowering under inductive environments. The elevated activity of gibberellin-like compounds, as determined by bioassay, were similar except for a marked increase in levels in ancymidol-treated plants grown under inductive environmental conditions. Microscopic examination of the stem tip indicated that the action of the growth regulators involved the induction of floral buds. Thus, in Clerodendrum, ancymidol appears to stimulate an unknown gibberellin(s) and simultaneously acts antagonistically with GA3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1979.tb01669.x
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    Paper (German National Licenses)
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