Production of Ochratoxin A by Aspergillus ochraceus in a Semisynthetic Medium

Author:

Davis N. D.1,Searcy J. W.1,Diener U. L.1

Affiliation:

1. Department of Botany and Plant Pathology, Auburn University Agricultural Experiment Station, Auburn, Alabama 36830

Abstract

Aspergillus ochraceus NRRL 3174 produced 29 mg of ochratoxin A per 100 ml of nutrient medium consisting of 4% sucrose and 2% yeast extract. Ochratoxin A was the sole metabolite present in the chloroform extracts of the growth medium. Trace amounts of ochratoxin B were produced in a 1% yeast medium, and a comparatively large amount of ochratoxin B was produced in media containing 16 and 32% sucrose.

Publisher

American Society for Microbiology

Subject

General Pharmacology, Toxicology and Pharmaceutics,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine

Reference14 articles.

1. Invasion of stored wheat by Aspergillus ochraceus;Christensen C. M.;Cereal Chem.,1962

2. Microflora of black and red pepper;Christensen C. M.;Appl. Microbiol.,1967

3. Screening method for zearalenone, aflatoxin and ochratoxin;Eppley R. M.;J. Ass. Offic. Anal. Chem.,1968

4. Ferreira N. P. 1967. Recent advances in research on ochratoxin. Part 2. Microbiological aspects p. 157-168. In R. T. Mateles and G. N. Wogan (ed.) Biochemistry of some foodborne microbial toxins. M.I.T. Press Cambridge Mass.

5. Note on ochratoxin;Nesheim S.;J. Ass. Offic. Anal. Chem.,1967

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