Abstract
Beans can be found in different grain colours, and for this reason, it is important to understand the technological and nutritional quality of the diverse types of beans that are consumed. The objectives of this work were to identify the traits that determine Brazilian consumer choice of different bean colours and to evaluate whether different bean colours present differences in technological and nutritional traits. For this purpose, beans of different colours (white, cranberry, matte red kidney, shiny red kidney, and black) were obtained from supermarkets. The samples were evaluated for consumer preference and the technological and nutritional traits of the beans. In southern Brazil, the majority of the survey participants (58%) preferred black beans, and their choice was based on consumption habit (66%) and grain colour (30%). Different bean colours presented differences for all traits related to technological and nutritional quality, except for potassium concentration. Consumption habit and grain colour defined consumer choice for black beans. Black beans were preferred by 58% of the participants, and this type of bean has high concentrations of calcium, magnesium, iron, zinc and copper.
Highlights
Beans are an important source of minerals in the diet, with the predominant mineral being potassium, followed by phosphorus, magnesium, sulfur, calcium, iron, zinc, manganese, copper and boron (Ribeiro, Jost, Cerutti, Maziero, & Poersch, 2008; Jost, Ribeiro, Cargnelutti Filho, & Antunes, 2010)
Black beans were preferred by the majority of the participants (58%) among the samples presented (Figure 2B)
Black beans were preferred by 58% of the participants (Figure 2B), and the criteria that defined their choice were consumption habit and grain colour (Figure 2C)
Summary
Beans (Phaseolus vulgaris L.) are grown and consumed in several countries. Records of bean consumption in the world date as far back as Ancient Greece (Amouretti, 1998). In Brazil, indigenous people consumed beans even before the colonial period. Brazil is a major world bean producer and consumer. Carioca bean crops are predominant (beige seed coat with brown streaks), accounting for 70% of the national production, followed by the black cultivars (20%), and other colour cultivars (10%) (Lemos, Mingotte, & Farinelli, 2015). The type of bean that is preferred by consumers varies in different regions of the country. In southern Brazil, consumers prefer black beans. In this region, black bean production accounts for 70% of the area cultivated with beans
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