Table 3.
Effect of shear rate and frequency on the consistency index (K, K′, and K″), flow behavior index (n, n′, and n″), and determination coefficient (R2, R′2, and R″2) of starch pastes and gels pre-heated at 59 °C and 60 °C.
Starch | K (Pa sn) | n | R2 | K′ (Pa sn) | n′ | R′2 | K″ (Pa sn) | n″ | R″2 |
---|---|---|---|---|---|---|---|---|---|
Native PS | — | — | — | 343.44 ± 38.54 Ec | 0.08 ± 0.01 Be | 0.996 | 33.2 ± 4.08 Cd | 0.19 ± 0.03 Abc | 0.981 |
59 °C—1 min | — | — | — | 485.71 ± 25.19 DE | 0.09 ± 0.00 AB | 0.994 | 63.14 ± 7.54 B | 0.12 ± 0.01 A | 0.914 |
59 °C—3 min | 9.74 ± 1.22 E | −0.83 ± 0.06 C | 0.998 | 803.67 ± 0.92 AB | 0.08 ± 0.00 B | 0.995 | 78.15 ± 1.54 A | 0.11 ± 0.00 A | 0.988 |
59 °C—6 min | 11.61 ± 0.72 E | −0.81 ± 0.01 BC | 0.998 | 907.70 ± 43.09 A | 0.08 ± 0.01 B | 0.996 | 83.18 ± 4.51 A | 0.13 ± 0.01 A | 0.992 |
59 °C—9 min | 19.89 ± 1.51 D | −0.66 ± 0.07 A | 0.999 | 665.12 ± 11.21 BC | 0.09 ± 0.00 AB | 0.992 | 78.76 ± 1.74 A | 0.12 ± 0.00 A | 0.862 |
59 °C—12 min | 37.04 ± 1.62 C | −0.64 ± 0.02 A | 0.999 | 636.78 ± 160.52 CD | 0.12 ± 0.03 A | 0.990 | 66.98 ± 5.35 B | 0.23 ± 0.12 A | 0.980 |
59 °C—15 min | 60.78 ± 2.83 A | −0.71 ± 0.02 AB | 0.999 | 620.32 ± 63.77 CD | 0.10 ± 0.00 AB | 0.997 | 64.64 ± 0.88 B | 0.17 ± 0.01 A | 0.963 |
59 °C—18 min | 48.66 ± 1.60 B | −0.69 ± 0.03 A | 0.999 | 613.45 ± 24.59 CD | 0.10 ± 0.00 AB | 0.996 | 65.56 ± 0.67 B | 0.17 ± 0.01 A | 0.986 |
60 °C—1 min | 13.35 ± 0.86 b | −0.80 ± 0.03 b | 0.999 | 784.36 ± 48.37 a | 0.08 ± 0.00 e | 0.996 | 76.96 ± 5.33 a | 0.11 ± 0.00 d | 0.990 |
60 °C—3 min | 24.45 ± 0.75 b | −0.75 ± 0.01 ab | 0.999 | 747.29 ± 10.63 a | 0.09 ± 0.00 e | 0.996 | 75.34 ± 1.86 a | 0.12 ± 0.00 d | 0.982 |
60 °C—6 min | 62.90 ± 1.20 a | −0.72 ± 0.01 ab | 0.999 | 536.33 ± 32.29 b | 0.09 ± 0.00 de | 0.996 | 59.40 ± 1.97 b | 0.17 ± 0.01 c | 0.981 |
60 °C—9 min | 67.92 ± 1.07 a | −0.70 ± 0.01 a | 0.999 | 459.54 ± 29.51 b | 0.10 ± 0.01 cd | 0.998 | 55.44 ± 1.01 b | 0.19 ± 0.00 bc | 0.992 |
60 °C—12 min | 88.19 ± 4.34 a | −0.70 ± 0.01 a | 0.999 | 353.52 ± 62.90 c | 0.12 ± 0.01 ab | 0.997 | 46.16 ± 1.93 c | 0.21 ± 0.01 ab | 0.987 |
60 °C—15 min | 76.04 ± 34.53 a | −0.70 ± 0.11 a | 0.999 | 302.18 ± 25.68 c | 0.13 ± 0.01 a | 0.998 | 46.51 ± 0.52 c | 0.21 ± 0.01 ab | 0.993 |
60 °C—18 min | 89.90 ± 6.80 a | −0.68 ± 0.01 a | 0.998 | 361.52 ± 51.89 c | 0.11 ± 0.01 bc | 0.997 | 41.66 ± 2.72 c | 0.23 ± 0.01 a | 0.992 |
Data are means ± SD. A, B, C, D, E represent the significant difference of starch samples in column by heating at 59 °C (p < 0.05); a, b, c, d, e represent the significant difference of starch samples in column by heating at 60 °C (p < 0.05).