Ochratoxin A – 50th birthday

Ochratoxin A was discovered 1969 in South Africa, as a toxic metabolite of Aspergillus ochraceus from corn meal intentionally inoculated with said microfungus (Van der Merwe, 1965). Prompt after this first discovery, naturally occuring Ochratoxin A was isolated from a commercial corn sample in the USA (Shotwell et al., 1969). Also in 1969 (van Walbeek et al., 1969) isolated OTA from Penicillium verrucosum.

Besides Ochratoxin A we supply the most common mycotoxin standards as well as standard solutions.


  • Van der Merwe, K.J., Steyn, P.S., Fourie, L., Scott, De B., Theron, J.J. (1965) Ochratoxin A, a toxic metabilite produced by Aspergillus ochraceus With. Nature, 205, 1112-1113.
Shotwell, O.L; Hesseltine, C.W.; Goulden M.L. (1969) Ochratoxin A: Occurrence as Natural Contaminant of a Corn Sample. Appl. Microbiol., 17,765-766.

  • Van Walbeek, W.; Scott, P.M.; Harwig, J.; Lawrence, J.W. (1969) Penicillium viridicatum Westling: A new source of ochratoxin A. Can. J. Microbiol., 15, 1281-1285

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