Kinetics of ochratoxin A production in different Aspergillus species.
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 x l0(5) 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 degrees C after 7 days' incubation in YES liquid medium. Ergosterol content and ochratoxin production of A. albertensis cultures were in good correlation.
Varga
J
J
Department of Microbiology, Faculty of Sciences, University of Szeged, Hungary. jvarga@bio.u-szeged.hu
Rigó
Krisztina
K
Lamper
Csilla
C
Téren
J
J
Szabó
G
G
D001230:Aspergillus / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D007700:Kinetics; D009183:Mycotoxins / Q000096:biosynthesis* / Q000302:isolation & purification; D009793:Ochratoxins / Q000096:biosynthesis* / Q000302:isolation & purification; D013045:Species Specificity
D009183:Mycotoxins; D009793:Ochratoxins; C025589:ochratoxin A