Stander, MASteyn, PSLubben, AMiljkovic, AMantle, PGMarais, GJ2007-03-142007-06-072007-03-142007-06-072000-05Stander, MA, et al. 2000. Influence of halogen salts on the production of the ochratoxins by aspergillus ochraceus wilh. Journal of Agricultural and Food Science, vol. 48 (5), pp 1865-18710021-8561http://hdl.handle.net/10204/1896http://hdl.handle.net/10204/1896The first report of the biological production of bromo ochratoxin B, by Aspergillus ochraceus Wilh. is presented as well as a study of the influence of potassium bromide, potassium iodide, potassium fluoride, and potassium chloride on the production of ochratoxin A and ochratoxin B. Potassium fluoride and potassium iodide inhibited the growth of the fungus, whereas potassium chloride substantially stimulated the production of ochratoxin A in shaken solid substrate fermentation on whole wheat or shredded wheat, generally giving a high yield of ochratoxins. Increasing levels of potassium bromide led to a decline in ochratoxin a production and an increase in bromo-ochratoxin B, ochratoxin B, and 4-hydroxy ochratoxin B. Nevertheless, A. ochraceus was much less versatile in the bromo analogues than other fungi, which produce metabolites containing chlorine. Analysis included aminopropyl solid-phase extraction column cleanup followed by quantitative analysis on reversed-phase HPLC using fluorescence detection and employing N-(5-chloro-2 -hydroxybenzoyl)-phenylalanine as an internal standard.160156 bytesapplication/pdfenCopyright: 2000 American Chemical SocietyOchratoxin ABromo-ochratoxin BAspergillus ochraceus withSolid-phase extraction(4R)-hydroxy ochratoxinArticleStander, M., Steyn, P., Lubben, A., Miljkovic, A., Mantle, P., & Marais, G. (2000). Influence of halogen salts on the production of the ochratoxins by aspergillus ochraceus wilh. http://hdl.handle.net/10204/1896Stander, MA, PS Steyn, A Lubben, A Miljkovic, PG Mantle, and GJ Marais "Influence of halogen salts on the production of the ochratoxins by aspergillus ochraceus wilh." (2000) http://hdl.handle.net/10204/1896Stander M, Steyn P, Lubben A, Miljkovic A, Mantle P, Marais G. Influence of halogen salts on the production of the ochratoxins by aspergillus ochraceus wilh. 2000; http://hdl.handle.net/10204/1896.TY - Article AU - Stander, MA AU - Steyn, PS AU - Lubben, A AU - Miljkovic, A AU - Mantle, PG AU - Marais, GJ AB - The first report of the biological production of bromo ochratoxin B, by Aspergillus ochraceus Wilh. is presented as well as a study of the influence of potassium bromide, potassium iodide, potassium fluoride, and potassium chloride on the production of ochratoxin A and ochratoxin B. Potassium fluoride and potassium iodide inhibited the growth of the fungus, whereas potassium chloride substantially stimulated the production of ochratoxin A in shaken solid substrate fermentation on whole wheat or shredded wheat, generally giving a high yield of ochratoxins. Increasing levels of potassium bromide led to a decline in ochratoxin a production and an increase in bromo-ochratoxin B, ochratoxin B, and 4-hydroxy ochratoxin B. Nevertheless, A. ochraceus was much less versatile in the bromo analogues than other fungi, which produce metabolites containing chlorine. Analysis included aminopropyl solid-phase extraction column cleanup followed by quantitative analysis on reversed-phase HPLC using fluorescence detection and employing N-(5-chloro-2 -hydroxybenzoyl)-phenylalanine as an internal standard. DA - 2000-05 DB - ResearchSpace DP - CSIR KW - Ochratoxin A KW - Bromo-ochratoxin B KW - Aspergillus ochraceus with KW - Solid-phase extraction KW - (4R)-hydroxy ochratoxin LK - https://researchspace.csir.co.za PY - 2000 SM - 0021-8561 T1 - Influence of halogen salts on the production of the ochratoxins by aspergillus ochraceus wilh TI - Influence of halogen salts on the production of the ochratoxins by aspergillus ochraceus wilh UR - http://hdl.handle.net/10204/1896 ER -