Formation of ochratoxin A and aflatoxins following the use of propionic acid as a grain preservative for storing damp barley |
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Authors: | Email author" target="_blank">K?A?ScudamoreEmail author J?N?Banks R?Rizvi P?Jennings |
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Institution: | (1) KAS Mycotoxins, 6 Fern Drive, SL6 OJS Taplow, Maidenhead, Berks, UK;(2) Central Science Laboratory, YO41 1LZ Sand Hutton, York, UK |
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Abstract: | The growth of storage moulds was studied in barley at 22% and approximately 28% moisture content treated with the recommended
and reduced commercial doses of propionic acid over a 6 month storage period at 20°C. Experimental sample size was 5 kg barley
per lot. Barley was fully protected against the growth ofA. flavus and aflatoxin formation when the recommended dose was applied. However, the treatment was less effective in controlling growth
ofP. verrucosum and preventing ochratoxin A formation such that by 4 to 6 months of storage, the fungus had started to develop and toxin
had formed even in some of the samples treated with propionic acid. The risk of the development of ochratoxin A during storage
increased as the optimum dose was reduced, particularly for barley at 22% moisture content. |
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Keywords: | Propionic acid Barley Aflatoxin ochratoxin A storage |
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