The objective of Exp. 2 was to determine the effect of heat pulse treatment and MCFA addition on phytase stability with two PTs. To achieve this objective, a sample from each treatment was heated in an environmentally control chamber (Caron model 6030, Marietta, OH) at 60 °C and 20% humidity. The sample bags were pulled out after they were stored for 11 h and 48 min. The data logger (HOBO model Onset U12-012, Bourne, MA) was placed within the sample bag at approximately midlevel, and remaining sample was placed on top to ensure data logger reflected true sample temperature. The premix temperature reached 60 °C after 2 h and 21 min in the chamber. The samples were held at 60 °C for 9 h and 27 min. The individual premix samples were riffle divided twice to yield two 200-g subsamples, and then they were sent to commercial laboratories for phytase activity. The results of phytase after heat pulse treatment were reported in percent stability, which was calculated by dividing the phytase activity by the initial phytase activity and then multiplying by 100.
Onset u12 012
Manufactured by HOBO
Sourced in United States
The Onset U12-012 is a four-channel temperature and humidity data logger designed for a variety of indoor monitoring applications. It features a large internal memory, programmable start/stop time, and a range of connectivity options. The device records data at user-specified intervals and can be downloaded to a computer for analysis.
Automatically generated - may contain errors
Lab products found in correlation
3 protocols using onset u12 012
1
Phytase Stability under Heat Pulse
2
Vitamin Stability in Thermally Treated Premixes
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A sample from each treatment (2 × 2 factorial, with two premix types [VP or VTM] and two oil types [MO or MCFA]) was heated in an environmentally control chamber (Caron model 6030, Marietta, OH) at 60 °C and 20% humidity. The sample bags were pulled out after they were stored for 11 h and 48 min. The data logger (HOBO model Onset U12-012, Bourne, MA) was placed within the sample bag at approximately midlevel and remaining sample was placed on top to ensure data logger reflected true sample temperature. The premix temperature reached 60 °C after 2 h and 21 min in the chamber. The samples were held at 60 °C for 9 h and 27 min. The individual premix samples were riffle divided twice to yield two 225-g sub-samples, then they were sent to commercial laboratories for vitamin A (AOAC 974.29.45.1.02), D3 (AOAC 2011.12 ) and E (AOAC 971.30). The results of vitamin after heat pulse treatment were reported in percent stability, which was calculated by dividing the vitamin concentration by the initial vitamin concentration and then multiplying by 100.
3
Vitamin Stability After Heat Exposure
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A sample from each treatment was heated in an environmentally control chamber (Caron model 6030, Marietta, OH, USA) at 60 °C and 20% humidity. The sample bags were pulled out after they were stored for 11 h and 48 min. The data logger (HOBO model Onset U12-012, Bourne, MA, USA) was placed within the sample bag at approximately midlevel and remaining sample was placed on top to ensure data logger reflected true sample temperature. The premix temperature reached 60 °C after 2 h and 21 min in the chamber. The samples were held at 60 °C for 9 h and 27 min. The individual premix samples were riffle divided twice to yield two 200-g sub-samples; then, they were sent to commercial laboratories for analyses as previously explain in Exp. 1. The results of vitamin after heat pulse treatment were reported in percent stability, which was calculated by dividing the vitamin concentration by the initial vitamin concentration and then multiplying by 100.
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