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Glucoamylase Time-Temperature Indicators based on Fat Oxidation of Chilled Pork

QIAN Jing,ZHENG Guang-lin,FENG Qin   

  1. School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
  • Online:2013-09-25 Published:2013-09-27

Abstract:

The dynamic properties and activation energies of three glucoamylase types of TTIs (time-temperature
indicators) were investigated. The fat oxidation in chilled pork was investigated to acquire its activation energy and shelf life.
According to the activation energy and end-point matching principle between TTI and foods, matching experiments were
set up under both constant and variable temperatures. One (50 μL enzyme dosage) of the glucoamylase TTIs was selected to
predict the shelf life of chilled pork accurately based on experiments and following calculation.

Key words: time-temperature indicator (TTI), glucoamylase, activation energy, chilled pork, fat oxidation