Table 4.
Viscosity and gelification of WB Control, AUT100, AUT115 and AUT130. G1′, G1′′ and tan (δ)1, represent elastic and viscous moduli and tangent at a frequency of 1 Hz. a, b and c are the equation exponents that are adjusted to model the law of potency from the experimental data (G′ (ω) = G1′ ωa; G′′ (ω) = G1′′ ωb; tan (δ) ω = tan (δ)1 ωc). τmax represents the maximum tension in the viscoelastic lineal region (LVR) obtained from the tension screening. The cross-point is G1′ = G1′′.
| Control | AUT100 | AUT115 | AUT130 | |
|---|---|---|---|---|
| Pasting properties | ||||
| Pasting Temperature (°C) | 70.3 ± 0.2 a | 73.53 ± 0.2 b | 73.6 ± 0.3 b | 73.9 ± 0.0 b |
| Peak viscosity (Pa·s) | 1.54 ± 0.03 c | 1.44 ± 0.04 b | 1.47 ± 0.01 bc | 1.07 ± 0.00 a |
| Peak time (s) | 676 ± 10 a | 719 ± 60 b | 784 ± 4 c | 799 ± 17 c |
| Trough viscosity (Pa·s) | 1.19 ± 0.03 b | 1.30 ± 0.03 c | 1.41 ± 0.01 d | 1.07 ± 0.00 a |
| Breakdown (Pa·s) | 0.35 ± 0.01 d | 0.14 ± 0.01 c | 0.06 ± 0.02 b | 0.00 ± 0.00 a |
| Final Viscosity (Pa·s) | 2.35 ± 0.05 ab | 2.43 ± 0.03 b | 2.62 ± 0.01 c | 2.30 ± 0.01 a |
| Setback (Pa·s) | 1.15 ± 0.03 a | 1.13 ± 0.00 a | 1.21 ± 0.00 b | 1.24 ± 0.01 b |
| Viscoelastic properties | ||||
| G1′ (Pa) | 867 ± 85 b | 541 ± 107 a | 775 ± 71 b | 732 ± 3 ab |
| a | 0.15 ± 0.01 a | 0.15 ± 0.01 a | 0.15 ± 0.00 a | 0.15 ± 0.00 a |
| G1′′ (Pa) | 179 ± 15 b | 120 ± 22 a | 169 ± 12 b | 164 ± 0 b |
| b | 0.28 ± 0.01 a | 0.32 ± 0.00 b | 0.29 ± 0.01 a | 0.29 ± 0.00 a |
| tan (δ)1 (Pa) | 0.206 ± 0.002 a | 0.222 ± 0.003 b | 0.219 ± 0.005 b | 0.224 ± 0.000 b |
| c | 0.130 ± 0.00 a | 0.168 ± 0.01 b | 0.137 ± 0.02 a | 0.134 ± 0.00 a |
| τ max (Pa) | 3.7 ± 0.4 b | 1.3 ± 0.1 a | 1.2 ± 0.1 a | 1.7 ± 0.4 a |
| Crosspoint (Pa) | 41.4 ± 4.4 b | 27.9 ± 0.0 a | 31.5 ± 1.5 a | 28.6 ± 0.3 a |
Values with different small letters show significant differences between autoclave treatments (p < 0.05).