Production of penicillic acid and patulin by an atypical Penicillium roqueforti isolate

Abstract
Simultaneous production of penicillic acid and patulin by an atypical strain of P. roqueforti isolated from cheddar cheese is reported. Mycotoxin production was confirmed by TLC and GLC and by UV, IR and mass spectral analyses. Culture extracts were toxic to Bacillus megaterium and chicken embryos. Commercial strains of P. roqueforti used in production of blue-veined cheeses did not produce penicillic acid and patulin.