ResumoO objetivo deste trabalho foi a elaboração de um requeijão cremoso probiótico, que mantenha as características físico-químicas e sensoriais do produto tradicional, agregando propriedades funcionais. Foi produzido um requeijão cremoso controle (sem a adição de probiótico) e outro adicionado de Lactobacillus casei, após a fusão da massa, à temperatura de 50±1ºC. Os requeijões controle e probiótico foram envasados, armazenados a 4±1ºC e submetidos às análises de composição centesimal após 1 dia de processamento. O pH dos requeijões, assim como a contagem de Lactobacillus casei do requeijão probiótico foram avaliados após 1, 7, 14 e 28 dias de fabricação. A avaliação sensorial foi realizada no 4º dia de armazenamento e os atributos analisados foram: aparência, sabor, aroma, textura, aceitação geral e intenção de compra. Os resultados foram avaliados por análise de variância e teste de médias de Tukey. Não houve diferença quanto à composição centesimal entre o requeijão controle e o requeijão probiótico. A contagem de Lactobacillus casei foi de 2,2x10 7 UFC/g após 1 dia de processamento e manteve-se constante durante os 28 dias de armazenamento a 4±1ºC. O requeijão probiótico apresentou boa aceitação sensorial e 82% dos provadores certamente ou provavelmente comprariam o produto. Os resultados permitem concluir que o requeijão pode ser considerado uma boa alternativa de produto lácteo probiótico. Palavras-chave: Lactobacillus casei, probiótico, requeijão, sensorial AbstractThe objective of this work was the production of probiotic "requeijão cremoso" that keeps the physicalchemical and sensorial characteristics of the tradicional product, linked to the functional properties. Control (without probiotic addition) and probiotic "requeijão cremoso" added with Lactobacillus casei after fusion, at 50±1ºC, were produced, packed and stored at 4±1ºC. Control and probiotic "requeijão cremoso" were evaluated to physical-chemical composition 1 day after processing. After 1, 7, 14 and 28 days of storage, the pH were evaluated for both products and Lactobacillus casei count only for probiotic "requeijão cremoso". Sensory evaluation was accomplished on the 4 th day of storage for appearance, taste, flavor, texture, general acceptance and purchasing intention. The results were evaluated by analysis of variance and Tukey's test. There was no difference on physical-chemical composition of control and probiotic "requeijão cremoso". Lactobacillus casei count was 2,2x10 7 UFC/g after 1 day of
This research communication addresses the impact of the addition of Lactobacillus casei and/or carbonation (CO2) on the chemical composition, physicochemical characteristics, probiotic survival, and sensory acceptance of passion-fruit flavored whey dairy beverages (70% milk/30% whey) during storage (30 d/4°C). The addition of Lactobacillus casei and/or carbonation did not impact on the chemical composition, pH values, and acceptance (flavor and overall impression) of the products, but increased the acidity, and decreased the aroma acceptance. The carbonation process did not affect the probiotic survival but decreased the acidity of the products during storage. It can be concluded that it is possible to develop a probiotic passion-fruit flavored carbonated whey dairy beverage with suitable chemical composition, acidity, sensory acceptance (>6 in 9-point hedonic scale) and probiotic viability (>7 log cfu/ml) that could be refrigerated stored for 30 d. This is the first report considering a probiotic non-fermented carbonated whey dairy beverage.
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