Abstract
A study was made for purification of cephamycin C from fermentation of Streptomyces clavuligerus. Initially, the culture broth was clarified by microfiltration and ultrafiltration, after which the resulting permeates were subjected to nonspecific adsorption and ion-exchange chromatography on resin columns. The antibiotic activity was measured by the biological method at each stage by assaying its activity against the Escherichia coli ESS, super sensitive to β-lactam antibiotic. The purification processes were assessed in relation to the variables affecting each step. The purification efficiency by nonspecific adsorption was monitored by UV spectrophotometry, while the ion-exchange adsorption fractions were assessed by NMR spectroscopy. Some of the fractions obtained during purification were also analyzed by mass spectrometry (LC/MS and LC/MS/MS) to identify the cephamycin C molecule. These preliminary results proved the process feasibility.
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Abbreviations
- Rt:
-
Retention times
- 1HNMR:
-
Proton nuclear magnetic resonance spectroscopy
- ESI+:
-
Positive-mode electrospray ionization
- TIC:
-
Total ion-current chromatogram
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The authors gratefully acknowledge the financial support of FAPESP (Grants 04/16056-6 and 05/55079-4).
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An erratum to this article can be found at http://dx.doi.org/10.1007/s12010-011-9472-z
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de Baptista Neto, Á., Bustamante, M.C.C., de Oliveira, J.H.H.L. et al. Preliminary Studies for Cephamycin C Purification Technique. Appl Biochem Biotechnol 166, 208–221 (2012). https://doi.org/10.1007/s12010-011-9417-6
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DOI: https://doi.org/10.1007/s12010-011-9417-6