Fungicides and the Effects of Mycotoxins on Milling Fractions of Irrigated Rice
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- 作者：Giniani Carla Dors ; Sergiane Souza Caldas ; Helen Cristina dos Santos Hackbart ; Ednei Gilberto Primel ; Carlos Alberto Alves Fagundes ; Eliana Badiale-Furlong
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2013
- 出版时间：February 27, 2013
- 年：2013
- 卷：61
- 期：8
- 页码：1985-1990
- 全文大小：212K
- 年卷期：v.61,no.8(February 27, 2013)
- ISSN：1520-5118
文摘
This study aimed to evaluate the effect of fungicides on rice cultivation, regarding the occurrence and the distribution of mycotoxins in fractions of the processed grain, by a validated chromatographic method. A method based on extraction with acetonitrile:water, determination by HPLC-DAD, and confirmation by LC-MS was validated before the mycotoxin evaluation. Control samples and samples to which triazole fungicides had been applied were collected from experimental fields for four years. Results showed that 87% of the samples were contaminated with deoxynivalenol or zearalenone, and that all samples treated with fungicide were contaminated with some of these mycotoxins. Aflatoxin B1 and ochratoxin A were found in 37% of the samples; half of them had been treated with fungicide. Therefore, fungicides tend to be stressors for toxigenic fungi found in the fields.