3. Results and discussion
3.1. General quality attributes Sensory evaluation for the orange juice obtained using different
treatment approaches was performed based on the parameters of odor, color, taste, and overall acceptance. Sensory characteristics of ultrasound treated orange juice were identified and compared to the thermally pasteurized juice. On the basis of the average ratings given by the judges, it was found that immediately after treatment the overall sensory scores of the treated and untreated samples were different. Results revealed that juices with good hedonic values were observed in case of ultrasound and ultrasound + UV treated juices whereas thermally treated juices had poor sensory scores. As such, the non-thermally treated orange juice was judged to have a high food quality by virtue of the high rating assigned to the taste characteristics in the sensory profile. Flavor and color are important elements in the consumer’s perception of the freshness of orange juice. Heat pasteurized orange juice showed decreased flavor which may be due to high temperature operation as well as evaporation of volatile flavor components during heating. Further, there is a loss of aroma which resulted in cooked orange-like smelling which may be attributed to the destruction of the pigments responsible for aroma..
3. Results and discussion3.1. General quality attributes Sensory evaluation for the orange juice obtained using differenttreatment approaches was performed based on the parameters of odor, color, taste, and overall acceptance. Sensory characteristics of ultrasound treated orange juice were identified and compared to the thermally pasteurized juice. On the basis of the average ratings given by the judges, it was found that immediately after treatment the overall sensory scores of the treated and untreated samples were different. Results revealed that juices with good hedonic values were observed in case of ultrasound and ultrasound + UV treated juices whereas thermally treated juices had poor sensory scores. As such, the non-thermally treated orange juice was judged to have a high food quality by virtue of the high rating assigned to the taste characteristics in the sensory profile. Flavor and color are important elements in the consumer’s perception of the freshness of orange juice. Heat pasteurized orange juice showed decreased flavor which may be due to high temperature operation as well as evaporation of volatile flavor components during heating. Further, there is a loss of aroma which resulted in cooked orange-like smelling which may be attributed to the destruction of the pigments responsible for aroma..
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