The idle temperature was set at 50 °C and tests were performed as follows: 50 °C for 1 min at 160 rpm, the temperature was ramped up to 95 °C at a constant rate of 0.2 °C/s, then held at 95 °C for 210 s, and finally cooled down to 50 °C at the constant rate of 0.18 °C/s.