Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Purification of the hydrophilic antibiotics epidermin, gallidermin and nikkomycin Z by preparative reversed-phase HPLC (1988)
    Springer
    Chromatographia 26 (1988), S. 215-220 
    Details
    ISSN: 1612-1112
    Keywords: preparative HPLC ; Hydrophilic antibotics ; Adsorption effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Preparative reversed-phase HPLC techniques for the separation of different hydrophilic fermentation products have been developed to shorten the comples and time-consuming isolation procedure. Separations were performed with low adsorptive reversed-phase packings and, additionally with strong acidic volatile modifiers to prevent adsorption, especially of the basic polypeptide antibotics epidermin and gallidermin on the stationary phases. The complex nature of the crude products required a particle size of 10 micron to separate the substances in a purity between 94% and 100%. The loading was limited to 100mg per injection on a 16 mm i.d. column, which corresponds to 4×10−3 g/g stationary phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02268154
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Separation and determination of neuraminic acids in nanogram quantities by liquid chromatography — A comparative study with different amino phases (1985)
    Springer
    Chromatographia 20 (1985), S. 231-234 
    Details
    ISSN: 1612-1112
    Keywords: Column liquid chromatography ; Amino silica gel ; Neuraminic acids ; UV detection at nanomole level
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Neuraminic acid derivatives were separated easily by liquid chromatography on amino phases and using acetonitrile/15 mM phosphate buffer, pH 5.2 as mobile phase. Detection at 200 nm allowed determination of substances in the nanomole range. All solvent systems were used isocratically at room temperature. The separation did not depend on ion-exchange but on a partition mechanism, the solutes being separated according to their polarity. Thus, it was possible to optimize the resolution by varying the stationary phase and the composition of the eluent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02259693
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...