Table 5. Sensory evaluation and consumer acceptability of probiotic beverages after the first day of storage at 4 °C.
Property | Sample of fermented beverage | ||||
---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | |
Flavour (max 12) |
(10.5±0.4)a | (8.6±2.4)b | (8.1±2.1)b | (7.4±2.8)bc | (6.2±2.8)c |
Odour (max 2) |
(1.9±0.2)a | (1.5±0.5)b | (1.4±0.6)b | (1.4±0.6)b | (1.4±0.7) b |
Appearance (max 1) | (0.99±0.03)a | (0.9±0.1)a | (0.9±0.1)a | (0.9±0.2)a | (0.8±0.2) a |
Colour (max 1) |
(1.0±0.0)a | (0.9±0.2)a | (0.9±0.1)a | (0.8±0.2)a | (0.8±0.2)a |
Consistency (max 4) | (3.7±0.4)a | (3.4±0.7)ab | 3(.4±0.6)ab | (3.3±0.7)ab | (3.3±0.7)b |
Total (max 20) |
(18.2±1.7)a | (15.3±3.6)b | (14.6±3.3)b | (13.6±3.9)b | (12.7±4.0)b |
Acceptability score | 1 | 2 | 3 | 4 | 5 |
x | 7.9a | 7.1ab | 6.7b | 5.2c | 3.5d |
S.D. | 0.7 | 1.5 | 1.5 | 2.1 | 2.2 |
Desirability/% | 100.00a | 93.00ab | 75.00c | 33.33d | 13.33e |
CV | 9.28 | 20.67 | 22.67 | 40.69 | 61.18 |
Samples (in %): 1=cow's milk 100, 2=cow's milk 75+soy beverage 25, 3=cow's milk 50+soy beverage 50, 4=cow's milk 25+soy beverage 75, 5=soy beverage 100. Data represent mean value±S.D., N=3. Different letters in superscript indicate statistically significant differences among mean values±S.D. according to Duncan's multiple range test. x=mean, S.D.=standard deviation, CV=variability coefficient