FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (2): 59-63.

Previous Articles     Next Articles

Optimization of Tomato Juice Sterilization Conditions with High Hydrostatic Pressure

 QIU  Wei-Fen, GAO  Yu-Long   

  1. College of Food Science and Engineering, Nanjing University of Finance and Economics, Provincial Key Laboratory of Quality Control and Further Processing of Food and Oils, Nanjing 210003, China
  • Online:2007-02-15 Published:2011-12-31

Abstract: A second order polynomial equation for high hydrostatic pressure (HHP) sterilization of B.Subtilis AS1.1380 in tomato juice was established with response surface methodology (RSM). The validation data under different experimental levels were verified. Key factors affecting sterilization such as temperature, pressure and pressure holding time were analyzed by the response surface plots and their corresponding contour plots. The optimum processing parameters for sterilization of B.Subtilis AS1.1380 of 6 log cycles in tomato juice are: temperature 33.5℃, pressure 469.2MPa, and pressure holding time 14.0min.

Key words: tomato juice, high hydrostatic pressure sterilization, B.Subtilis, RSM, optimization