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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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The production of cyclopiazonic acid by Penicillium commune and cyclopiazonic acid and aflatoxins by Aspergillus flavus as affected by water activity and temperature on maize grains

Gqaleni, N. and Smith, J.E. and Lacey, J. and Gettinby, G. (1996) The production of cyclopiazonic acid by Penicillium commune and cyclopiazonic acid and aflatoxins by Aspergillus flavus as affected by water activity and temperature on maize grains. Mycopathologia, 136 (2). pp. 103-108. ISSN 0301-486X

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Abstract

The combined effects of water activity (aw) and temperature on mycotoxin production by Penicilium commune (cyclopiazonic acid - CPA) and Aspergillus flavus (CPA and aflatoxins - AF) were studied on maize over a 14-day period using a statistical experimental design. Analysis of variance showed a highly significant interaction (P 0.001) between these factors and mycotoxin production. The minimum aw/temperature for CPA production (2264 ng g-1 P. commune, 709 ng g-1 A. flavus) was 0.90 aw/30 °C while greatest production (7678 ng g-1 P. commune, 1876 ng g-1 A. flavus) was produced at 0.98 aw/20 °C. Least AF (411 ng g-1) was produced at 0.90 aw/20 °C and most (3096 ng g-1) at 0.98 aw/30 °C.