Efeito da adição de proteínas de soja e da substituição total e parcial de gordura por inulina em ricota cremosa
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2014-06-16
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Universidade Federal de Goiás
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The effect of soy protein addition and partial and total fat replacement by inulin on physic, chemical, rheological and sensory properties of creamy ricotta was evaluated. Control sample and mixed creamy ricotta (with soy protein) with addition or not of inulin and with addition or not of cream were manufactured and abovementioned properties were contrasted. Samples without cream had fat content about 2,6 % and samples with cream had fat content between 9 and 12 %. Soy proteins increased yield, color intensity, firmness, consistency, syneresis and taste sensorial acceptation of creamy ricotta. Total fat replacement by inulin (3 %), decreased color luminosity and intensity, and all sensory attributes analyzed and increased syneresis, adhesiveness, consistency and firmness of creamy ricottas. Total fat replacement by inulin (6 %), decreased color luminosity and intensity, and increased work of adhesion and adhesiveness of creamy ricotta. Partial fat replacement by inulin (3 and 6 %) did not affect on color luminosity, intensity and hue, nor on firmness, consistency, adhesiveness, work of adhesion, however increased syneresis of creamy ricotta. Soy proteins addition and total and partial fat replacement by inulin did not affect substantially on rheological behavior at linear viscoelastic region among samples of creamy ricottas. Spreadability sensory acceptance was inversely related with adhesiveness and work of adhesion while sensorial consistency was directly related with instrumental consistency and firmness. All samples presented rheological behavior as weak gel, as observed from mechanical spectra. Both at room temperature (30 °C) and in cold temperature (10 °C) samples showed microstructural stability and it was noted tendency to increase elastic behavior over time. Partial fat replacement by inulin (3 %) was the most indicated formulation, because this sample showed good properties, besides soy proteins and low fat content, promising a great nutritional appeal.
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CAPRA, T. C. Efeito da adição de proteínas de soja e da substituição total e parcial de gordura por inulina em ricota cremosa. 2014. 79 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Goiás, Goiânia, 2014.