FOOD SCIENCE ›› 2017, Vol. 38 ›› Issue (2): 34-39.doi: 10.7506/spkx1002-6630-201702006

• Bioengineering • Previous Articles     Next Articles

Modeling the Effect of Combined Thermal and High Pressure Treatment on Inactivation of Lipoxygenase in Pork

HUANG Yechuan, LI Feng, WU Zhaomin   

  1. College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
  • Online:2017-01-25 Published:2017-01-16

Abstract: This study aimed to investigate the effect of high pressure processing on lipoxygenase (LOX) activity in pork. Pork Longissimus dorsi muscles were treated in the pressure range of 200–700 MPa and in the temperature range of 20–60 ℃. Changes in LOX inactivation rate constants were studied, and kinetic models of LOX inactivation based on Arrhenius and Eyring equation were established, respectively. The results showed that the inactivation rate constants increased with increasing pressure in the studied temperature range, and increased with increasing temperature in the studied pressure range. The Arrhenius and Eyring equations were suitable for the whole temperature and pressure ranges, respectively. Both the Arrhenius and Eyring kinetic models had a good fitting degree with high R2 values (0.989 and 0.965, respectively). Thus, the regression models could well predict changes in LOX activity in pork during combined thermal and high pressure processing in a certain range of pressure and temperature.

Key words: pork, high pressure, thermal treatment, lipoxygenase, kinetic model

CLC Number: