Document Detail

The effect of substrate on mycotoxin production of selected Penicillium strains.
MedLine Citation:
PMID:  15734568     Owner:  NLM     Status:  MEDLINE    
Analytical methods are presented for detecting simultaneously 11 fungal metabolites (aflatoxins B1, B2, G1 and G2, citrinin, cyclopiazonic acid, mycophenolic acid, ochratoxin A, penicillic acid, penitrem A and roquefortine C) on different matrices. The methods were applied to determine the mycotoxins produced by different Penicillium crustosum, Penicillium nordicum and Penicillium verrucosum strains on yeast extract sucrose (YES) agar and cheese and bread analogues and are based on high-performance liquid chromatography (HPLC) and photodiode array detection (PDA). The growth substrate had a distinctive effect on the mycotoxin production ability of the fungi examined. The P. crustosum strains produced roquefortine C on all the substrates, with the highest amounts being detected on the cheese analogue. Penitrem A was synthesised on the cheese analogue only. The strains of P. verrucosum produced exclusively citrinin on YES, but both ochratoxin A and citrinin were detected in considerable amounts on the bread analogue. On the bread, toxin profiles varied significantly between the individual P. verrucosum strains. The cheese analogue was not favourable for the mycotoxin production of this species. The growth substrate had the least effect on the toxin production of the P. nordicum strains, which synthesised ochratoxin A in moderate amounts on all three media.
Meri Kokkonen; Marika Jestoi; Aldo Rizzo
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of food microbiology     Volume:  99     ISSN:  0168-1605     ISO Abbreviation:  Int. J. Food Microbiol.     Publication Date:  2005 Mar 
Date Detail:
Created Date:  2005-02-28     Completed Date:  2005-04-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8412849     Medline TA:  Int J Food Microbiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  207-14     Citation Subset:  IM    
National Veterinary and Food Research Institute, P.O. Box 45, Hämeentie 57, FIN-00581 Helsinki, Finland.
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MeSH Terms
Bread / microbiology
Cheese / microbiology
Chromatography, High Pressure Liquid / methods
Colony Count, Microbial
Culture Media / chemistry
Food Microbiology*
Mycotoxins / analysis,  biosynthesis*
Ochratoxins / analysis,  biosynthesis
Penicillium / metabolism*
Substrate Specificity
Reg. No./Substance:
0/Culture Media; 0/Mycotoxins; 0/Ochratoxins; 303-47-9/ochratoxin A

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