Aflatoxin Production by Some Indian Strains of Aspergillus flavus Link ex Fries

SUMMARY: Nine strains of Aspergillus flavus and one each of A. versicolor, A. penicilliformis and A. niger isolated from Delhi soils were screened for ability to produce aflatoxins on different media. Seven strains of A. flavus produced aflatoxins B1 and B2 but no aflatoxin G. The other five isolates produced no detectable aflatoxins. Yields of aflatoxins were low on glucose-salts or sucrose-yeast extract media. The latter with added salts or a modified Czapek agar medium gave enhanced yields.