Navegando por Assunto "Sensorial"

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Acesso aberto (Open Access)
Avaliação do efeito da combinação de pectina, gelatina e alginato de sódio sobre as características de gel de fruta estruturada a partir de "mix" de polpa de cajá e mamão, por meio da metodologia de superfície de resposta
(Instituto Nacional de Pesquisas da Amazônia, 2011) CARVALHO, Ana Vânia; MATTIETTO, Rafaella de Andrade; ASSIS, Glaucy Takeda; LOURENÇO, Lúcia de Fátima Henriques
The objective of this work was to establish a technological procedure for producing a structured fruit product from yellow mobin and papaya purees, as an attempt to combine the sensory properties of both fruits and potentialize the functional properties of the final product. The effect of different combinations of pectin, gelatin and sodium alginate on the fruit gel properties was evaluated by response surface methodology. Papaya and yellow mobin purees and the structured products were characterized in terms of functional compounds (total tannin and carotenoid contents), as well as centesimal composition, pH, titratable acidity, soluble solids, sugars, water activity, carbohydrates and total energetic value. The results obtained from the experimental design indicated that only the gelatin concentration affected the product firmness. The developed fruit structured products presented good acceptance for all evaluated attributes. The data concerning purchase intent indicated that 70% of the panelists would probably or certainly purchase the mixed yellow mobin and papaya structured product if they found it for sale.
Acesso aberto (Open Access)
Optimization of parameters technological to process tucupi and study of product stability
(Universidade Federal do Pará, 2019-06) CAMPOS, Ana Paula Rocha; MATTIETTO, Rafaella de Andrade; CARVALHO, Ana Vânia
Tucupi is a product obtained from the fermentation and cooking of cassava root wastewater which is widely used in the popular cuisine of the North region of Brazil. This study employed an experimental design to select tucupi processing (fermentation and cooking times) as a function of residual cyanidric acid content and assess the stability of the product obtained. Although the design did not generate a predictive mathematical model, the trend plots and physicochemical and sensory tests indicated 24 h of fermentation and 40 min of cooking as process parameters. The tucupi prepared had pH 3.71, titratable acidity of 0.7 g lactic acid/100 mL, 93.91% moisture, 0.5% ashes, 0.52% proteins, 0.24% lipids, 4.83% carbohydrates, total and free cyanide of 6.97 and 1.31 mg HCN/L, respectively. No Salmonella spp., coagulase-positive Staphylococcus, Bacillus cereus , or thermotolerant coliforms were observed, whereas counts of mesophilic aerobic bacteria (1.3x102 CFU/g) and molds and yeasts (1.3x102 CFU/g) were low. Over 50 days of follow-up (stored at 10°C), the microbial load remained stable and no significant difference was found in physicochemical characteristics, however, the sensory analysis indicated a decrease in quality at 49 days of storage.