Table 5. Rheological parameters for low-fat cupuassu goat milk yogurts during refrigerated storage
Sample | Days | Herschel-Bulkley | Apparent viscosity (mPa·s) |
r2 | σ° (Pa) | K (mPa·sn) | n |
WY | 0 | 0.99a,A | 0.58c,AB | 777.30b,C | 1.01b,B | 269.95b,A |
7 | 0.99a,A | 0.21b,A | 207.00a,B | 0.67a,A | 109.31a,B |
14 | 0.99a,A | 0.21b,A | 201.00a,B | 0.66a,A | 99.31a,B |
21 | 0.99a,A | 0.26b,A | 156.00a,B | 0.71a,A | 97.98a,B |
28 | 0.99a,A | 0.10a,A | 152.00a,B | 0.70a,A | 81.98a,C |
SY | 0 | 0.99a,A | 0.38b,A | 137.00a,A | 0.90b,B | 157.30c,A |
7 | 0.99a,A | 0.11a,A | 178.00a,B | 0.72a,A | 91.98b,B |
14 | 0.99a,A | 0.11a,A | 157.00a,B | 0.61a,A | 75.31ba,B |
21 | 0.99a,A | 0.06a,A | 121.00a,B | 0.69a,A | 61.99a,A |
28 | 0.99a,A | 0.02a,A | 127.00a,B | 0.63a,A | 53.99a,B |
SIY | 0 | 0.99a,A | 1.21c,A | 463.00b,B | 1.03c,B | 411.91b,AB |
7 | 0.99a,A | 0.29b,A | 360.00ab,B | 0.80b,A | 165.30a,C |
14 | 0.99a,A | 0.36b,A | 238.00a,B | 0.70b,A | 169.29a,D |
21 | 1.00a,A | 0.14a,A | 297.00a,B | 0.72b,A | 130.64a,C |
28 | 0.99a,A | 0.08a,A | 220.00a,B | 0.53a,A | 129.97a,E |
SMY | 0 | 1.00a,A | 0.70b,B | 620.00b,BC | 0.95b,B | 474.56b,B |
7 | 0.99a,A | 0.32a,A | 286.00a,B | 0.69a,A | 156.64a,C |
14 | 0.99a,A | 0.29a,A | 297.00a,B | 0.64a,A | 143.30a,C |
21 | 0.99a,A | 0.17a,A | 284.00a,B | 0.64a,A | 129.97a,C |
28 | 0.99a,A | 0.23a,A | 206.00a,B | 0.66a,A | 101.98a,D |
SWY | 0 | 1.00a,A | 0.32b,A | 105.00b,A | 1.15a,B | 152.63b,A |
7 | 0.99a,A | 0.14a,A | 32.60a,A | 1.12a,B | 59.99a,A |
14 | 0.99a,A | 0.12a,A | 30.00a,A | 1.08a,B | 49.32a,A |
21 | 0.99a,A | 0.14a,A | 39.10a,A | 0.99a,B | 53.32a,A |
28 | 0.99a,A | 0.11a,A | 39.80a,A | 0.93a,B | 42.99a,A |
r2, determination coefficient of model; σ0, yield stress; K, coefficient of consistency; n, flow behavior index.
Values were expressed as a mean±SD (n=3).
Different lowercase superscripts indicate significant differences among storage times (p<0.05).
Different uppercase superscripts indicate significant differences among treatments of goat milk yogurts (p<0.05).
WY, whole yogurt; SY, skim yogurt; SIY, skim yogurt with inulin; SMY, skim yogurt with maltodextrin; SWY, skim yogurt with whey protein.