Navegando por Autor "Lima, Patrícia de Oliveira"
Agora exibindo 1 - 1 de 1
- Resultados por página
- Opções de Ordenação
Artigo Blanching effect on the quality and shelf-life characteristics of fresh cowpea grains [vigna unguiculata (L.) walp.](Foods, 2022-04) Damasceno, Karla Suzanne Florentino da Silva Chaves; Tavares, Romayana Medeiros de Oliveira; Assis, Cristiane Fernandes de; Lima, Patrícia de Oliveira; Lima, Paulo Douglas Santos de; Lima, Roberto Rodrigues CunhaThe high perishability of fresh cowpeas impairs its commercialization. Thus, this study aims to determine the temperature–time binomial for blanching fresh cowpea [Vigna unguiculata (L.) Walp] by evaluating the effects of heat treatment and kinetic behavior on the peroxidase (POD) activity and on the physical characteristics (firmness, color, mass gain). A factorial design (3 × 6) with temperature (70, 80, and 90 ◦C) and time (1, 2, 4, 6, 8, and 10 min) was implemented. Physicochemical, microbiological, and enzymatic (POD) changes, in addition to photographic monitoring, were evaluated throughout the storage period (4.90 ◦C). With regard to the effects of the independent variables and the first-order kinetic model, it was determined that 70 ◦C for 4 min of blanching maintained and/or improved the physical characteristics of the raw material. The pH and the acidity of the blanched fresh cowpea changed little during the storage period; the microbiological load and POD activity reduced with blanching and remained stable until the eighth day of storage, and provided an increase of 5 days in shelf-life under refrigeration when compared to non-blanched. Blanching is shown as an alternative for improving fresh cowpeas, favoring an economic increase in production with guaranteed quality and safety attributes