FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (12): 89-92.doi: 10.7506/spkx1002-6630-201212017

• Processing Technology • Previous Articles     Next Articles

Optimization of Ultra High Pressure Sterilization Conditions for Fish Sausage

LU Hai-xia1, HANG Yu-yu1, LI Jian-rong1,2,*   

  1. (1. Key Laboratory of Food Safety of Zhejiang Province, College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, China;2. Bohai University, Jinzhou 121013, China)
  • Online:2012-06-25 Published:2012-07-27

Abstract: The effects of pressure, dwell time and temperature on microbial survival in fish sausage after ultra high pressure (UHP) sterilization were studied, and the sterilization conditions were optimized using orthogonal array design. Pressure was the most important affecting factor, followed by temperature; dwell time had the weakest effect. The optimal sterilization conditions were treatment pressure of 400 MPa, pressure-holding time of 5 min and treatment temperature of 30 ℃. Total bacterial count in fish sausage was reduced by 97.25% after UHP sterilization under these conditions, and 100% E. coli, mold and yeast were killed. No pathogenic bacteria were detected before and after UHP sterilization.

Key words: ultra high pressure, fish sausage, sterilization technology, orthogonal array design

CLC Number: