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ResumoO rótulo tem por função orientar o consumidor sobre os constituintes dos alimentos, promovendo escolhas alimentares saudáveis. No entanto, isto não significa que os consumidores o estejam utilizando como uma ferramenta para a escolha dos alimentos que deverão compor sua dieta e, assim, reduzir os excessos alimentares e os danos ocasionados à saúde. Este trabalho, um estudo transversal, avaliou o hábito de leitura dos rótulos de consumidores em uma rede de supermercados de Pelotas-RS. Verificou-se que 48,13% dos entrevistados avaliam os rótulos dos alimentos. Os usuários da rotulagem são, na sua maioria, mulheres, jovens e com curso superior. Houve associação significativa entre hábito de leitura e influência na compra dos produtos, o que mostra a importância da rotulagem como um instrumento no ato da compra, uma vez que representa um elo de comunicação entre o consumidor e o produto; além disso, se o rótulo é bem compreendido, permite escolhas alimentares mais criteriosas. Palavras-chave: Rotulagem de alimentos; Informação nutricional;Comportamento do consumidor. SummaryThe label has the task of guiding the consumer on the constituents of food, promoting healthy food choices. However, this does not mean that consumers are using as a tool to choose which foods should make up your diet, and thus reduce overeating and damages health. This is a cross-sectional study, which evaluated the habit of reading labels for consumers in a supermarket chain in Pelotas, RS. It was found that 48.13% of respondents evaluate food labels. Users of labeling are mostly women, young people and university graduates. A significant association between reading habits and influence on the purchase of products, which shows the importance of labeling as a tool in the purchase, since it represents a communication link between the consumer and the product is well understood and allows choices food more insightful.

The objective of this study has been to evaluate the stability of alpha-, (gamma+beta)-, and delta-tocopherols in rice bran oil chemically refined submitted to heating in a heater without air circulation and shielded from light, at temperatures of 100 degrees C and 180 degrees C. The collection of samples took place after 48, 96, 144, 192, 240, 336, and 432 h of heating and were stored in amber-colored flasks and frozen (-18 degrees C). The analyses of tocopherols took place in accordance with the method by Chen and Bergman (2005), with slight modifications, utilizing a system of high efficiency system of liquid chromatography. It was observed that the alpha-tocopherol is present at higher concentration in rice bran oil (328.4 mg/kg), followed by (gamma+beta)-tocopherol (99.1 mg/kg), and delta-tocopherol (7.7 mg/kg). The alpha-tocopherol in rice bran oil submitted to 100 degrees C showed a reduction of 28.65% at the end of 432 h of heating whereas when submitted to 180 degrees C temperature; its reduction was of 100% at the end of 240 h of heating. The contents of (gamma+beta)- and delta-tocopherol in rice bran oil at the end of 432 h of heating at 100 degrees C was of 79.9 and 6.4 mg/100 g, respectively.

The aim of this study was to evaluate the quality of soybean grains stored at different temperatures (8, 13, 18, 23, and 28°C) and with different wet basis moisture content (12% and 16%). For this, kinetic models of pseudo‐zero and pseudo‐first‐order and Arrhenius law were used to verify the changes in color, lipid oxidation, and fatty acids profile. Color loss and lipid oxidation were affected by moisture content and storage temperature, with the most prominent influence observed after the fourth month of storage. The activation energy of the lipid oxidation of grains stored with a moisture content of 12% and 16% were 21.1 kJ mol−1 and 6.2 kJ mol−1, respectively. At low temperatures (8 and 13°C), there was an efficient conservation of soybeans stored with a moisture content of 16%, since the color, lipid oxidation, and profile of fatty acids were preserved for at least 6 months. Practical applications Soybeans are a commodity of high economic interest, and improper storage conditions may reduce the quality of the grain. Hence, knowledge of the degradation rate constants of soybean physicochemical properties may help reduce the loss of quality and establish proper storage conditions in the soybean processing industry. This study also supports the development of technologies for controlling temperature and relative humidity to conduct aeration of soybeans during storage, especially in hot and humid regions.

Background and objectives Fusarium graminearum may reduce the wheat flour yield, technological quality, and breadmaking performance. The objective was to evaluate the effect of breadmaking on the mycotoxin content in white and whole wheat breads to obtain information about the safety of wheat products. The wheat samples were contaminated via the addition of Fusarium‐damaged kernels to produce different levels of deoxynivalenol (DON), ranging from <500 to >5,000 μg/kg. Findings Because of the breadmaking process, a significant reduction in the DON concentration was observed in both the white and whole wheat breads at the upper DON levels (>2,000 μg/kg) compared with the flours. The DON reduction was 49% and 39%, respectively, in whole and white breads, compared with the original flours. ZON was only detected in the two higher levels of DON in the whole wheat flour (mean 33.1 μg/kg) and in the two whole wheat breads (mean 42.4 μg/kg). Conclusions The breadmaking process can be a complementary strategy to reduce the mycotoxin content in wheat products. Significance and novelty These results are important for wheat supply chain to meet the legislation requirements and to produce safer foods.

ResumoO estudo propôs avaliar o efeito do branqueamento combinado ao uso de sais e de revestimentos à base de metilcelulose (MC) na absorção de gordura e nas características físico-químicas e sensoriais de batatas da cultivar BRS Ana, submetidas à fritura na forma de batata chips. O experimento foi realizado com a cultivar BRS Ana e a cultivar Asterix, sendo a batata Asterix adequada para produtos fritos. Para o estudo foram definidos controles para as batatas das cultivares BRS Ana (T0') e Asterix (T0"), batatas que não foram submetidas ao branqueamento nem a qualquer tipo de revestimento. Foram testados três tratamentos para cada cultivar; para a cultivar BRS Ana: T1: com branqueamento e sem revestimento; T2: com branqueamento e com revestimento de 1% de MC; T3: com branqueamento e com revestimento de 2% de MC; para a cultivar Asterix: T4: com branqueamento e sem revestimento; T5: com branqueamento e com revestimento de 1% de MC; T6 com branqueamento e com revestimento de 2% de MC. Para os tratamentos que receberam o branqueamento (T1, T2, T3, T4, T5 e T6), foi realizada uma imersão das fatias de batata em água a 85 ºC por 3 minutos, com adição de 0,5% de CaCl 2 e 2,5% de NaCl, seguida de resfriamento e centrifugação. As batatas dos tratamentos T2, T3, T5 e T6 que receberam revestimento de MC foram imersas em solução de MC 1 ou 2% (p/v), por 1 min e, em seguida, drenadas. As batatas foram submetidas à fritura em gordura vegetal a 180 ºC. A maior redução de absorção de gordura (13%) durante a fritura foi para batata da cultivar BRS Ana submetida ao branqueamento e revestimento com 1% MC, obtendo-se no produto final 29,37% de gordura. Além disso, o revestimento com 1% MC não modificou significativamente a cor e a textura das batatas chips; nos resultados sensoriais esse tratamento não influenciou na preferência para os atributos testados (aparência, cor, sabor e textura) e o índice de aceitação sensorial desse tratamento foi de 85,9%. A batata da cultivar BRS Ana submetida ao branqueamento adicionado de NaCl e CaCl 2 e revestimento com 1% de MC apresenta potencial de utilização na forma de batata chips. Palavras-chave: Batata chips; Absorção de gordura; Goma; Aceitação; Batata cultivar BRS Ana. SummaryThe present study aimed to evaluate the effect of blanching combined with the use of salts and methylcellulose coatings (MC) on fat absorption and the physicochemical and sensory characteristics of potatoes of the cultivar BRS Ana, subjected to frying in the form of chips. The experiment was carried out with the cultivars BRS Ana and Asterix, Asterix potatoes being adequate for fried products. The control samples for the cultivars BRS Ana (T0') and Asterix (T0") were not subjected to either blanching or any type of coating. Three treatments were tested for each cultivar, as follows: for the cultivar BRS Ana: T1: with blanching, without coating; T2: with blanching and coating using 1% MC; T3: with blanching and coating using 2% MC; for the cultivar Asterix: T4: with blanching, without coating; T5: with blanching and...