Journal
FOOD CHEMISTRY
Volume 129, Issue 3, Pages 957-964Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2011.05.053
Keywords
Peanut; Aspergillus flavus; Aspergillus parasiticus; Aflatoxins; Cyclopiazonic acid; trans-Resveratrol; Water activity
Funding
- FAPESP
- CNPq/ANVISA
- Cooperativa Agricola Mista da Alta Paulista (CAMAP), Tupa, Sao Paulo
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The aim of the present study was to analyze the mycobiota, occurrence of mycotoxins (aflatoxins and cyclopiazonic acid), and production of phytoalexin (trans-resveratrol) in two peanut varieties (Runner IAC 886 and Caiapo) during plant growth in the field. Climatic factors (rainfall, relative humidity and temperature) and water activity were also evaluated. The results showed a predominance of Fusarium spp. in kernels and pods, followed by Penicillium spp. and Aspergillus flavus. Aflatoxins were detected in 20% and 10% of samples of the IAC 886 and Caiapo varieties, respectively. Analysis showed that 65% of kernel samples of the IAC 886 variety and 25% of the Caiapo variety were contaminated with cyclopiazonic acid. trans-Resveratrol was detected in 6.7% of kernel samples of the IAC 886 variety and in 20% of the Caiapo variety. However, trans-resveratrol was found in 73.3% of leaf samples in the two varieties studied. (C) 2011 Published by Elsevier Ltd.
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