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. 1970 Aug;20(2):251–253. doi: 10.1128/am.20.2.251-253.1970

Spectrophotometric Methods for Monitoring the Microbial Transformation of Steroids

I. Determination of 9α-Fluorohydrocortisone and 9α-Fluoro-16α-Hydroxyhydrocortisone in Fermentation Broths

Eugene Ivashkiv 1
PMCID: PMC376910  PMID: 5480100

Abstract

A method has been devised for the determination of 9α-fluorohydrocortisone and 9α-fluoro-16α-hydroxyhydrocortisone in fermentation broths. The method involves extraction of the two steroids from the broth with ethyl acetate, separation through the formation of the water-soluble borate complex of the vicinally hydroxylated steroid, and estimation of each steroid spectrophotometrically.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. GOODMAN J. J., SMITH L. L. 16alpha-Hydroxy steroids. XI. 2beta-and 16alpha-hydroxylation of 9alpha-fluorohydrocortisone by strains of Streptomyces roseochromogenes. Appl Microbiol. 1961 Sep;9:372–375. doi: 10.1128/am.9.5.372-375.1961. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. LEESON L. J., LOWERY J. A., SIEGER G. M., MULLER S. Steroid borates. I. Structural considerations. J Pharm Sci. 1961 Mar;50:193–197. doi: 10.1002/jps.2600500303. [DOI] [PubMed] [Google Scholar]
  3. VEZINA C., SEHGAL S. N., SINGH K. Transformation of steroids by spores of microorganisms. I. Hydroxylation of progesterone by conidia of Aspergillus ochraceus. Appl Microbiol. 1963 Jan;11:50–57. doi: 10.1128/am.11.1.50-57.1963. [DOI] [PMC free article] [PubMed] [Google Scholar]

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