RESUMO
Grape skin is a wine by-product with a high fiber and phenolic compound content, with potential application as an ingredient in food products. This work aimed to study the hedonic and sensory perception of the consumer using the Check-all-that-apply about cereal bars made with grape skin flour (GSF) obtained from wine residue. Grape skin flour with different granulometric ranges (coarse and fine) was added to the cereal bars in different proportions (10, 15, and 20%) to replace the oat flakes present in the formulation. Sensory acceptance results showed that all bars had good acceptance scores (>6.42) and presented different sensory profiles. The cereal bar containing 15% of coarse GSF had good sensory acceptance with attributes "few dark spots," "light color," and "softer," with desirable sensory characteristics and from the nutritional point of view with high fiber content and bioactive compounds and it was considered the best formulation. Therefore, the incorporation of wine by-products in cereal bars showed excellent acceptability and the possibility of insertion in the market.
RESUMO
ABSTRACT: Brazil nut is a typical oilseed from the Amazon region, of great economic and cultural importance. Due to its high nutritional value, it is interesting to be used as a matrix for new products' development. Thus, the present study aimed to develop and characterize a drink based on Brazil nuts fermented by Lactobacillus casei and added with inulin. After formulated, the drink was pasteurized, fermented, maturated, and stored under refrigeration for 28 days. Physical, chemical, microbiological, and sensory analyzes were performed before and after fermentation, at 7-day intervals. There was maintenance in the content of lipids and proteins and reduction in the concentrations of fibers, ash, total carbohydrates, and moisture. The fermented drink pH decreased significantly during storage, while the acidity and the soluble solids content increased from the 14th day. Regarding the color, there were significant changes in all parameters analyzed. In the fermented drink, the development of molds and yeasts, total and thermotolerant coliforms, and Salmonella were not verified, while the control drink deteriorated after 7 days. The probiotic L. casei had count ranging from 9.48 to 8.59 log CFU mL-1 during the 28 days. When exposed to in vitro gastrointestinal conditions, L. casei significantly reduced its concentration. However, it reached the enteric phase with counts greater than 6.00 log UFC mL-1. Sensorially, the drink reached intermediate scores (between 5.41 and 6.02). Therefore, the use of Brazil nuts proved to be viable for the development of a product free of animal-origin components, symbiotic, and of outstanding nutritional quality.
RESUMO: A castanha-do-Brasil é uma oleaginosa típica da região Amazônica, de grande importância econômica e cultural. Devido ao seu alto valor nutritivo, torna-se interessante a sua utilização como matriz para o desenvolvimento de novos produtos. Assim, o presente estudo teve como objetivo o desenvolvimento e caracterização de uma bebida à base de castanha-do-Brasil fermentada por Lactobacillus casei e adicionada de inulina. Após formulada, a bebida foi pasteurizada, fermentada, maturada e armazenada sob refrigeração por 28 dias. Foram realizadas análises físicas, químicas, microbiológicas e sensoriais antes e após a fermentação, em intervalos de sete dias. Observou-se uma manutenção no teor de lipídeos e proteínas e redução nas concentrações de fibras, cinzas, carboidratos totais e umidade. O pH da bebida fermentada reduziu significativamente ao longo do armazenamento, enquanto a acidez e o teor de sólidos solúveis aumentaram a partir do 14° dia. Em relação à cor, houve alterações significativas em todos os parâmetros analisados. Na bebida fermentada, não foi verificado o desenvolvimento de bolores e leveduras, coliformes totais e termotolerantes e Salmonella, enquanto a bebida controle se deteriorou após sete dias. O probiótico L. casei apresentou contagens variando de 9.48 a 8.59 log CFU mL-1 durante os 28 dias de armazenamento. Quando exposto às condições gastrointestinais in vitro, o L. casei diminui a sua concentração significativamente. Contudo, atingiu a fase entérica com contagens superiores a 6.00 log UFC mL-1. Sensorialmente, a bebida alcançou scores intermediários (entre 5.41 e 6.02). Dessa forma, a utilização da castanha-do-Brasil se mostrou viável para o desenvolvimento de um produto isento de componentes de origem animal, simbiótico e de destacável qualidade nutricional.
RESUMO
Front-of-package (FOP) nutrition labelling schemes use different framing to highlight nutrient content and promote healthier food choices. Health logos and nutritional warnings can be positioned on opposite sides of a continuous that goes from highlighting healthful products (gain-frame) to highlight unhealthful products (loss-frame), respectively. The aim of the present work was to evaluate the impact of health logos and nutritional warnings on consumers' choice of products with lower sugar content, and the impact of the two FOP nutrition labelling schemes on consumers' associations with sugar. An online study with 1232 people was carried out. Participants were randomly assigned to three experimental conditions: control (no information), health logos and nutritional warnings. They were presented with a series of three packages of different product categories featuring the corresponding information about sugar content and they had to indicate the product they would buy. After completing the choice tasks, they had to complete a word association task about sugar. Results confirmed that the inclusion of FOP nutrition labelling schemes containing information about sugar content encouraged consumers to select the product with lower sugar content. A larger proportion of participants selected the product with the lowest sugar content when packages featured nutritional warnings compared to when they featured health logos. Results from the word association task showed that nutritional warnings made the negative health effects of sugar more salient on consumers' mind. These results suggest that FOP nutrition labelling schemes based on a loss-frame to sugar content may be more efficient at encouraging healthier food choices than gain-frame schemes.
