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Published on: April 23, 2012
Assessment of group B trichothecene contamination in bread: Correlation during breadmaking and simulation of
Andressa Cunha Lemos1, Verônica Simões de Borba2, Priscila Tessmer Scaglioni3
1Mycotoxins and Food Science Laboratory, School of Chemistry and Food, Federal University of Rio Grande, FURG, Avenida Itália Km 8, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil; Sensory Analysis and Quality Control Laboratory, School of Chemistry and Food, Federal University of Rio Grande, FURG, Avenida Itália Km 8, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil.
Abstract:
This study investigates bioaccessibility and permeation capacity of group B trichothecenes in bread by different parameters of fermentation and baking times. Variables of the experimental design were first fermentation time, second fermentation time and baking time. Results showed that 120-min baking in the 2nd fermentation reduced Nivalenol (NIV), 15-acetyl-deoxynivalenol (15-AcDON) and deoxynivalenol-3-glucoside (DON-3G), whereas 30-min baking increased NIV. In the gastric stage, Deoxynivalenol (DON) and 3-acetyl-deoxynivalenol (3-AcDON) bioaccessibility increased, while DON-3G and 15-AcDON were undetected. In the intestinal stage, high DON-3G levels were detected, but NIV was undetected. Bioaccessible 15-AcDON was correlated with the 1st fermentation time. Permeation rates were 100 % and 91 % in the cases of DON and DON-3G, respectively. This study reinforced the interconvertibility of group B trichothecene forms during bread making and digestion. Merely assessing contaminant concentrations in the final product is not suitable to reflect trichothecene exposure.
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