Functional, thermal, and pasting properties of cooked carioca bean (Phaseolus vulgaris L.) flours

Abstract

This study verified if cooking presoaked beans in the steam of autoclave improves the pasting properties, texture profile, water-solubility (WSI), emulsifying capacities of aged carioca bean’ flours. The carioca beans flour pre- sented high content of protein (20.7 –22.3 g·100g − 1 ), resistant starch (RS) (8.3 –31.1 g·100g − 1 ), and dietary fiber (TDF) (18.9 –23.7 g·100g − 1 ), and the cultivar Notavel presented the highest content of total dietary fiber and resistant starch for both cooked and raw flour. The pretreatment promoted an increase in TDF (8.8%, cultivar Dama) and a decrease in RS (19.5%, 33.4%, and 47.0% for cultivars Imperador, Gol, and Bola Cheia, respectively). Regarding the pasting properties, the heating process promoted a reduction in the values of peak viscosity, final viscosity, breakdown, and setback for all carioca bean cultivars. The other parameters, i.e., gel hardness, WSI, emulsifying capacity, and stability also presented a significant decrease in the cooked flours. So, the pretreatment promoted a total or/partially starch pre-gelatinization and the denaturation of the proteins of the flours which might increase their acceptability for food development.