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Neste trabalho foi avaliado o uso de farinha de yacon na formulação de bolos de chocolate para se verificar a influência deste constituinte sobre a qualidade sensorial e cromaticidade do produto. Foram analisadas amostras de bolos, formulados com farinha de yacon, denominadas: amostra P (bolo padrão, sem farinha de yacon), amostra A (bolo com 20% de farinha de yacon) e amostra B (bolo com 40% de farinha de yacon). Para a avaliação sensorial, foi realizada a Análise Descritiva Quantitativa (ADQ), utilizando 15 provadores treinados, os quais definiram 9 atributos sensoriais (cor, estrutura do miolo, aroma, gosto doce, sabor de chocolate, sabor residual, umectância, maciez e qualidade global). A análise física dos bolos foi realizada através da caracterização cromática. Os dados sensoriais foram submetidos à análise de variância ANOVA, sendo realizado o teste de Duncan para comparação entre as médias de Duncan, ao nível de 5% de significância. Para verificar as correlações entre as amostras e os atributos, foi realizada a Análise de Componentes Principais (ACP). Na ACP, a soma de componentes principais 1 e 2 foi de 83,3%, ou seja, a variabilidade entre as amostras foi explicada por estes dois componentes. Os resultados obtidos demonstraram que a adição de 40% de farinha de yacon resultou em maiores notas para o aroma (10,16), gosto doce (7,60), sabor de chocolate (10,52), maciez (11,44) e qualidade global (11,64). Com relação ao atributo estrutura não houve diferença significativa entre as notas dos bolos P, A e B. Independente da quantidade de farinha de yacon adicionada, o perfil sensorial dos bolos de chocolate foi influenciado e, em particular, o bolo com maior teor de farinha de yacon apresentou as melhores notas. This study evaluated the use of yacon flour in the formulation of chocolate cakes by investigating its influence on the sensory quality and chromaticity of the product. The following samples were prepared and analyzed: sample P (standard cake without yacon flour), sample A (20% of yacon flour), and sample B (40% of yacon flour). The Quantitative Descriptive Analysis (QDA) was used for the sensory analysis with 15 trained panelists who evaluated 9 sensory attributes (color, crumb structure, aroma, sweet taste, chocolate flavor, residual taste, humectancy, tenderness, and overall quality). The physical analysis of the cake was made by color characterization. The data were subjected to sensory analysis of variance ANOVA and the Duncan's test for comparison between the averages, at 5% level of significance. To verify the correlations between the samples and attributes, the Principal Components Analysis (PCA) was performed. In the PCA, the sum of the principal components 1 and 2 was 83.3%, i.e., the variability between the samples was explained by these two components. The results showed that the addition of 40% of yacon flour resulted in higher scores for aroma (10.16), sweet taste (7.60), chocolate flavor (10.52), tenderness (11.44), and overall quality (11.64). With regard to the attribute crumb structure, there was no significant difference between the scores of cakes P, A, and B. Regardless of the amount of yacon flour added, the sensory profile of the chocolate cakes was influenced. Particularly, the cake with the highest content of yacon flour was attributed the highest scores

Perfil sensorial de bolos de chocolate formulados com farinha de yacon (Smallanthus sonchifolius)