Estabilidade de deoxinivalenol no processamento de biscoitos integrais.

Os produtos integrais estão cada vez mais integrados na dieta dos consumidores devido a presença da fração de farelo que concentra compostos fenólicos e antioxidantes, entretanto essa fração também pode conter micotoxinas. As micotoxinas são compostos tóxicos, prejudiciais à saúde e indesejáveis em alimentos. Dentre os ontaminantes do trigo, a micotoxina deoxinivalenol (DON) é considerada a mais prevalente. O objetivo do trabalho foi avaliar a estabilidade de DON no processamento de biscoitos integrais. Cinco amostras de trigo comercial, safra 2017/18, naturalmente contaminadas por Fusarium spp., foram fornecidas pela Embrapa Trigo de Passo Fundo/RS. Os biscoitos foram elaborados de acordo com Protonotariou et al. (2016) com modificações, utilizando farinha, açúcar e gordura. Os biscoitos foram assados em forno elétrico à 190 °C por 12 min. A detecção de DON foi feita através do ensaio imunoenzimático ELISA e os valores comparados pelo teste de Tukey (p≤0,05). A produção dos biscoitos reduziu significativamente a contaminação de DON em todas as amostras, variando entre 15% e 94%. Dois produtos estavam em conformidade com a legislação brasileira (750 ppb). A redução da contaminação por DON pode ter ocorrido pelo efeito de diluição através dos ingredientes adicionados, assim como pela temperatura de forneamento aplicada. O processamento de biscoitos mostra-se uma estratégia complementar para reduzir o teor de DON em produtos derivados de trigo. Palavras-chave: micotoxinas, farelo de trigo, farinha de trigo integral, limites máximos tolerados, ELISA

Deoxynivalenol reduction through the processing of whole grain cookies

Whole-grain products are increasingly integrated into consumers diets due to the presence of the bran fraction that concentrates phenolic and antioxidant compounds. However, the bran may also contain mycotoxins, toxic compounds, harmful to health and undesirable in food. For wheat, the mycotoxin deoxynivalenol (DON) is the most prevalent. The objective of this work was to evaluate the reduction of DON after the processing of whole wheat cookies. Five commercial wheat, harvest 2017/18, naturally contaminated by Fusariumspp. with DON content higheror as established to Brazilian legislation (1000 ppb), were provided by Embrapa Trigo from Passo Fundo/RS. The cookies were baking mostly using flour, sugar and fat. The detection of DON was performed using the ELISA immunoenzymatic assay. Cookie production reduced the contamination of DON in the samples, and two products were in compliance with Brazilian legislation. The reduction of contamination by DON may have occurred due to the dilution effect by the ingredients in samples1 and 3. The reduction of contamination by DON of the other samples (2, 4 and 5) was attributed to thermal degradation due to the baking temperature. Cookie processing is a complementary strategy to reduce the DON content in wheat product

Hydration properties and arabinoxylans content of whole wheat flour intended for cookie production as affected by particle size and Brazilian cultivars.

The effect of particle size (PS), cultivars (C), and their interactions (PS × C) on the hydration of whole wheat flour (WWF) intended for cookie production was evaluated by different approaches. Three Brazilian wheat cultivars and three particle sizes were evaluated. Total arabinoxylans content was affected by PS, increasing up to 6.18 times with the reduction in particle size. Water-soluble arabinoxylans were more influenced by the cultivar. The water absorption capacity by farinograph indicated that the PS had a greater influence, with high absorption in fine particle size flour. Water absorption based on swelling capacity and absorption kinetics by Enslin-Neff device evidenced high water absorption for coarse particle size flour, regardless the cultivar. ORS Vintecinco cultivar demonstrated the best hydration properties and desired quality for short-dough cookies. The different methods to predict the hydration properties of the flours resulted in different behaviors, demonstrating that the presence of outer layers of the grain of WWF promotes distinct mechanisms in the water absorption capacity, which are significantly influenced by genotype and particle size factors

Pasting properties of whole wheat flour with different particle size from brazilian cultivars indicated to cookies production.

SLACA