The addition of buttermilk powder as partial fat replacer in yogurt formulations with constant dry matter was investigated. Three formulations of yogurt were produced containing 0% (T1), 1.36% w·w-1 (T2) and 3.34% w·w-1 (T3) of buttermilk powder in the final product. Particle size and pH variation were monitored during fermentation; scanning electron microscopy and texture profile analysis were performed in the...
This study evaluated the effect of addition of modified starch on the characteristics of dulce de leche, being conducted in two phases. In the initial phase, starches were evaluated for their ability to provide viscosity in model solutions representing the composition of dulce de leche during processing, thus evaluating the effect of solid concentration, which occurs during production, on the ability of starche...
Este trabalho objetivou determinar pelo analisador rápido de viscosidade (RVA) as curvas de viscosidade de soluções preparadas a partir de concentrados proteicos de soro (CPSs) e determinar o tempo ideal de tratamento térmico visando à obtenção da viscosidade máxima nesta etapa. Os CPSs, produzidos a partir de amostras de soro submetidas inicialmente a tratamentos térmicos e de microfiltração, apresentaram comp...
Denaturation and interaction of different proteins occur in different forms and intensity when the pH value varies in accordance with the medium in which they are located. This study aimed to verify the influence of whey protein/casein interaction in the evolution of viscosity at different pH values, using the Rapid Viscosity Analyzer (RVA) as the thermal processing simulator. Samples of commercial whey protein...
As proteínas de fontes tradicionais estão sendo cada vez mais utilizadas como ingredientes em um grande número de alimentos formulados. As propriedades tecno-funcionais das proteínas estão relacionadas a várias características moleculares gerais como hidratação, atividade de superfície e tipo de interação proteína-proteína, favorecidas por desdobramento parcial das estruturas. Destas interações o pH do meio apr...