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  • 1
    Electronic Resource
    Electronic Resource
    Sulphur-containing Amino-acids of Nisin (1953)
    [s.l.] : Nature Publishing Group
    Nature 171 (1953), S. 606-606 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The amino-acid which behaved like cystathionine has now been isolated and found to differ from cystathionine. An acid hydrolysate of crude nisin was evaporated to dryness, the residue dissolved in water and the pH of the solution adjusted to 5-0. On standing at 4 C. a precipitate appeared which ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/171606a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Counter-Current Distribution of Nisins (1952)
    [s.l.] : Nature Publishing Group
    Nature 169 (1952), S. 707-707 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] "Extraction" was used by Bush and Densen3 to describe the process occurring in each single unit (for example, separating funnel) at each stage of the counter-current distribution. With their technique, n2 extractions are made in a chain of n units, giving n top layers and n bottom layers. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/169707b0
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  • 3
    Electronic Resource
    Electronic Resource
    A Rapid Turbidimetric Method for the Assay of Antibiotics (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 448-448 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The method described here enables assays to be made with an incubation time of 30 min. The use of a culture of test organism (Streptococcus agalactice) in its logarithmic phase of growth makes this possible. By subculturing twice daily, a rapidly growing strain is maintained; by limiting the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167448a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Electrophoresis of Group-Specific Extracts of Streptococci (1954)
    [s.l.] : Nature Publishing Group
    Nature 173 (1954), S. 486-487 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Hydrochloric acid extracts were prepared by the method of Lancefield1 and were concentrated by ethanol precipitation ; their specificity was established in precipitin ring tests with immune sera for each of the relevant serological groups. The precipitin tests were made by Shattock's3 technique and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/173486b0
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  • 5
    Electronic Resource
    Electronic Resource
    The Second Phase of Rennet Coagulation (1942)
    [s.l.] : Nature Publishing Group
    Nature 149 (1942), S. 194-195 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] VARIOUS hypotheses have been put forward in attempts to explain the clotting of milk by rennet. That from the Carlsberg Laboratories1,2 has probably been the most widely accepted. This theory states that the clot is due to the precipitation of the insoluble calcium salt of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/149194a0
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  • 6
    Electronic Resource
    Electronic Resource
    Pure Crystalline Rennin (1943)
    [s.l.] : Nature Publishing Group
    Nature 151 (1943), S. 473-474 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] NORTHROP1 has shown that crystallization is a useful procedure in the purification of certain enzymes. Crystalline form, however, is not reliable evidence of purity, as pointed out, for example, by Pirie2, but may be considered as confirmatory evidence. For these ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/151473b0
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  • 7
    Electronic Resource
    Electronic Resource
    Use of Paper Partition Chromatography in the Identification of the Volatile Fatty Acids (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 522-522 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Lugg and Overell4 separated organic acids as the free acids on paper sheets, using a mixture of butanol and acetic acid as the mobile phase, a method inapplicable, however, to the volatile fatty acids. Fink and Fink5 described a method in which the hydroxamates of the methyl esters of the volatile ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/166522a0
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    Paper (German National Licenses)
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