FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (21): 204-207.doi: 10.7506/spkx1002-6630-201021046

• Bioengineering • Previous Articles     Next Articles

Effects of Storage Temperature and Milk-based Media on Survival of Enteropathogenic Escherichia coli EPEC O114:K90

JIANG Bo,MENG Xiang-chen*,ZHANG Hong-yu   

  1. Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University,
    Harbin 150030, Ch
  • Received:2010-01-19 Revised:2010-08-24 Online:2010-11-15 Published:2010-12-29
  • Contact: MENG Xiang-chen E-mail:xchmeng@163.com

Abstract:

In this study, the survival situation of enteropathogenic Escherichia coli EPEC O114:K90 in different milk-based products stored at different temperatures was explored. Sterile milk, yoghurt and sour milk bacteria beverage were artificially contaminated by different initial concentrations of EPEC O114:K90 and subsequently stored at different temperatures. The survival rate of EPEC O114:K90 was periodically measured by plate count method during storage. Both low temperature and low acid environment could alleviate the growth of EPEC O114:K90. Water bath treatment at 72 ℃ for 15 min completely inactivated EPEC O114:K90 in the above three milk-based products. This strain was sensitive to regular processing conditions.

Key words: EPEC O114:K90, temperature, survival, yogurt

CLC Number: