Kinetics of ochratoxin a production in different Aspergillus species

Varga, J. and Rigó, Krisztina and Lamper, Csilla and Téren, J. and Szabó, G. (2002) Kinetics of ochratoxin a production in different Aspergillus species. Acta Biologica Hungarica, 53 (3). pp. 381-388. ISSN 0236-5383

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Abstract

Kinetics of ochratoxin A production was examined in a number of ochratoxin producing isolates representing different sections of the Aspergillus genus. Both weak and high ochratoxin producers were tested using immunochemical or high-performance liquid chromatograhic methods. All isolates were found to produce the highest amounts of ochratoxin A after 7–10 days of incubation. Ochratoxin production varied between 30 – 5×105 ng ml–1 among the Aspergillus isolates tested. The A. albertensis and A. melleus isolates examined were found to produce ochratoxin A constitutively. A. albertensis produced the highest amounts of ochratoxin A at 30 °C after 7 days’ incubation in YES liquid medium. Ergosterol content and ochratoxin production of A. albertensis cultures were in good correlation.

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