The development of a lactose-free beverage comes as a new feeding alternative to a product with excellent nutritional and functional characteristics to individuals with food restrictions related to milk. Thus, this study aimed to develop a cashew nut beverage with added mango juice and prebiotic substances by means of evaluating its sensory characteristics and physicochemical optimization. A 2 2 central composite rotatable design with five repetitions at the central point was applied to evaluate the effect of sugar and juice contents on the analyzed parameters. Data were evaluated by means of the response surface methodology, analysis of variance, and the means comparison test. Formulations with greater combined concentrations of juice and sugar obtained satisfactory acceptance. The means comparison test showed that the formulation that allows for the beverage's greatest acceptance must contain 40% mango juice and 8% sugar. Soluble solids content was influenced only by the addition of sugar, where the formulations that presented greater solids concentration were the ones which obtained greater sensory acceptance. The beverage's acidity was influenced only by the juice content, which, besides making formulations significantly more acid, did not affect their acceptance.

Purpose The number of researches that evaluate how behavioural and personality issues affect consumers’ acceptance and perception of food is increasing. Thus, this study aimed to evaluate the effect of nutritional information and health claims related to soya and cashew nut beverages over consumers’ acceptance and perception regarding nutritional value and healthiness and to verify whether behavioural and personality issues affect such evaluation. Design/methodology/approach The samples were evaluated in two phases, with (blind phase) and without information (informed phase) about their composition, nutritional characteristics and functional claims related to some of their ingredients. The sensory evaluation data were analysed by means of the analysis of variance for repeated measures, applying 2 (information) × 2 (beverage) and generalised linear model to evaluate the effect of information over the acceptance averages, as well as over the perception of healthy food and nutritional value. Findings Information on composition, nutritional characteristics and functional claims related to the cashew nut and soya beverages did not influence flavour acceptance (p-value = 0.250) and overall impression (p-value = 0.316), but had a positive impact on consumers’ perception regarding healthiness (p-value < 0.001) and nutritious value (p-value < 0.001) of both beverages, the cashew nut beverage being perceived as more nutritious and healthier than the soya beverage. Consumers’ different characteristics with respect to their interest in healthy eating (high and low) and food neophobia (neophiliacs and neophobics) did not have any influence on the beverages’ acceptance, as well as on the perception of healthy food and nutritious value. Originality/value This work compares consumers’ acceptance and perception regarding nutritional value and healthiness with relation a totally unique product in the Brazilian market, and in the world, a new functional beverage made from cashew nuts, with a soya-milk beverage. Until this moment, there are no studies comparing consumer acceptance and perception of products based on hydrosoluble extract-base added with fruit juice which evaluate the influence of behavioural and personality characteristics of consumers in their perception and acceptance towards these products.

The package label is an important factor to be evaluated, for constituting the first contact of the product with the consumer, which may exert influence on the purchase intention. Thus, this study identified and evaluated the importance of front label attributes of a new functional beverage made from cashew nut added with mango juice on consumers’ purchase intention; it also evaluated the influence of consumers’ attitudinal issues regarding functional foods on the importance of these attributes to the attitude of buying the beverage. Focus group methodology was used to assess which front label attributes of the product are important in the choosing process. The combination of attributes and their levels was used to develop 18 labels, which were analyzed by consumers in relation to their buying intention. The results were analyzed by conjoint and cluster analysis. The most relevant qualitative information on the purchase intention process of the cashew nut beverage highlighted by the focus groups were the illustration, the nutritional information (0% lactose and 0% cholesterol), and the term “prebiotic” with its functional claim. According to the conjoint analysis, the illustration was the attribute with more influence on the consumers’ purchase intention concerning this product, revealing the consumers’ preference for the image of the cashew nut standing alone on the label. Nutritional information and the term prebiotic and its functional claim had a positive impact, but were considered of low importance. Regarding the attitudinal factors involving functional foods there was no significant difference among the three groups of consumers.