Mycological condition of maize products
1992
Kamphuis, H.J. | Horst, M.I. van der | Samson, R.A. | Rombouts, F.M. | Nstermans, S.
Maize and maize-related products were investigated in a collaborative study antigenic extracellular polysaccharides (EPS) produced by Aspergillus and Penicillium species. In addition, the samples were tested for the presence of aflatoxin B1. All maize products, with the exception of the heat processed products, contained viable moulds on an average of (log(10) values) 3.3 +/- 0.7 colony-forming units per gram. In most samples a mixed mould flora was present. Species of the genus Fusarium were dominant, followed by Aspergillus, Eurotium and Penicillium. The mould colony count correlated positively with the presence of antigenic extracellular polysaccharides produced by species of Aspergillus and Penicillium. Gamma irradiation did not affect the detection of antigenic extracellular polysaccharides. Aflatoxin B1 was detected in two out of 35 samples; these contained 0.6 and 0.8 micrograms/kg. From one of these aflatoxin B1-containing samples, Aspergillus flavus was isolated.
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