Resumo

PAVLOVICH-ABRIL, Alan et al. Effects of a palm stearin and canola oil mixture on the rheological parameters of wheat dough and bread. INCI [online]. 2009, vol.34, n.8, pp.577-582. ISSN 0378-1844.

The effects of the substitution of the commercial shortening for palm stearin and canola oil mixture on the rheological properties of a wheat dough and bread were studied. The correlation coefficients between alveograph deformation work (W) and water absorption (WA) on the farinograph (r= 0.82; p<0.05), between WA and the specific volume (r= -0.55), and between W and specific volume (r= -0.54) were determined. The data show that the addition of fat decreases W, stretch resistance (P), and WA, while it increased the stability and mixing time. The correlation between loaf volume and compression force (texture) of bread (r= -0.74) was also determined. The palm stearin: canola oil 50:50 mixture had a greater level of polyunsaturated fatty acid than commercial shortening without the presence of trans fatty acids, while providing similar rheological properties, without differences in loaf volume and bread texture. The study shows that the fat elaborated with the palm stearin:canola oil mixture is a viable alternative to replace the conventional commercial shortening.

Palavras-chave : Masa; Panificación; Reología; Textura; Volumen del Pan.