Effect of types of stabilizers and fat percentages on the physicochemical characteristics of a yogurt

Abstract

In the present investigation, the physicochemical characteristics of a yogurt made with 3 levels of fat, using two types of stabilizer, were evaluated. A 2x3 bifactorial completely randomized design (DCA) was used. Factor A: Types of stabilizers, 2 g / L of CC-729 and 30 g / L of Inulin; Factor B: 1%, 2.5% and 4% fat milk, which originated six treatments; In addition, a control was included (whole milk + unflavored gelatin), three repetitions were carried out, resulting in 21 experimental units of 1000g. The physicochemical variables such as syneresis, viscosity, pH, acidity and ° Brix, were evaluated by means of an analysis of variance compared to the control by means of Dunnett's test of significance, resulting in factor A incidence on all the pH variables with 4 .07 and acidity with 0.837%, a dynamic viscosity of 10.398 Pa.s, ºBrix of 16.37 and Inulin (30g / L) presented better results in obtaining a lower percentage of syneresis with an average of 2.42%, contrasting with factor B, which did not present significant differences on any variable.