Purpose The purpose of this paper is to develop a cereal bar supplemented with coffee beverage that has health benefits. Design/methodology/approach Six types of cereal bars containing raisins or prunes with different concentrations of coffee were developed. Acceptability tests and physicochemical characterizations were performed by analysis of moisture, ash, protein, lipids, fibres and carbohydrates. Moreover, the levels of phenolic compounds, the fatty acid profile and the in vitro antioxidant activity were evaluated by the DPPH free radical scavenging and iron-chelating activity methods. The bars were assessed using the check-all-that-apply (CATA) methodology. The phenolic compound and antioxidant activity data were evaluated by analysis of variance. Averages were compared by the Scott–Knott test. To verify the characteristics of the food bar per the attributes cited in CATA, main component analysis was performed using the SensoMaker software. Findings The concentration of coffee did not affect the centesimal composition values. The highest percentage of scavenging activity of free radicals was observed in the food bar containing raisins, with a maximum concentration of coffee beverage equivalent to 10 mL. These values were higher in cereal bars containing raisins than in bars containing prunes with the same concentrations of coffee. The acceptance sensory test showed good acceptability ratios, ranging from 74.33 to 85.22 among different food bar formulations. Practical implications The bar consisting raisins and 100 per cent coffee presented high values of protection against oxidative stress, phenolic content and satisfying acceptability, thereby making it a novel possible alternative as a differentiated product with possible health-beneficial effects. Social implications This paper provides a differentiated product, through healthy ingredients, with convenience of purchase, besides having added value and possible health beneficial effects. Originality/value The bar consisting of raisins and 100 per cent coffee presented high values of phenolic content and protection against oxidative stress, as well as satisfying acceptability, thereby making it a novel possible alternative as a differentiated product with possible health-beneficial effects.

Resumo A mídia e as propagandas de alimentos representam hoje importantes estratégias para diferenciação, promoção e venda de produtos pelas indústrias. Dessa forma, estas podem exercer forte influência sobre o comportamento de compra e consumo do consumidor. Diante destas considerações, o objetivo deste trabalho foi avaliar a percepção de consumidores sobre a mídia e suas influências sobre o comportamento de compra de alimentos, por meio de uma pesquisa de mercado com consumidores de dois municípios do sul do estado de Minas Gerais, Brasil. Foi usada uma amostra não probabilística por conveniência, totalizando 285 respondentes (150 em Varginha e 135 em Lavras), tendo como instrumento de pesquisa questões para entrevista elaboradas pelos próprios pesquisadores. Os dados foram analisados de forma descritiva. Diante dos resultados, pode-se evidenciar que, para a amostra em estudo, o consumo alimentar pode ser influenciado pelas mídias e pelas propagandas de alimentos nelas anunciadas. A exposição a estes anúncios também pode estar relacionada com as opiniões sobre o que mais se valoriza na compra de alimentos, como a praticidade e a conveniência. No que se refere à leitura dos rótulos, observou-se baixa frequência de consumidores que leem frequentemente estas informações. Juntos, estes resultados reforçam as evidências de que as estratégias de marketing têm o potencial de influenciar no comportamento alimentar dos sujeitos e, portanto, também contribuir para o alcance dos objetivos da saúde pública, no que tange a alimentação e nutrição. Ressalta-se, neste caso, a importância de estratégias de educação alimentar e nutricional para a formação de consumidores mais autônomos e críticos quanto às suas escolhas alimentares.

The present study aimed to evaluate the effect of coffee adulteration on antioxidant activity in vitro.Coffee beverages were adulterated with different concentrations of coffee hulls, coffee straw, and corn (0%, 10%, 20%, 30%, 40%, 50%, and 100%) and tested separately. Each coffee beverage was prepared according to the same methods in all of the treatments. Phenolic compound, caffeine, trigonelline, and chlorogenic acid levels were determined in the beverages. Antioxidant activity in vitro was evaluated using the DPPH radical scavenging activity, reducing power, iron chelating activity, and lipoperoxidation inhibition methods. Phenolic compound, caffeine, and chlorogenic acid levels of the samples decreased with increasing adulterant concentration. Adding adulterant reduced the antioxidant capacity tested using all of the methods. The results show that adding coffee hulls, coffee straw, and corn affect the antioxidant capacity of the coffee beverages, reducing protection against oxidative stress.