Growth and Toxin Production of Bacillus cereus during Storage at Different Temperatures

저장 온도에 따른 Bacillus cereus의 성장 변화 및 독소 생성 변화

  • 김현욱 (농촌진흥청 국립축산과학원) ;
  • 김기환 (농촌진흥청 국립축산과학원) ;
  • 박범영 (농촌진흥청 국립축산과학원) ;
  • 오미화 (농촌진흥청 국립축산과학원)
  • Received : 2014.11.25
  • Accepted : 2014.12.01
  • Published : 2014.12.31

Abstract

Food safety is a global health goal, and food-borne disease are a significant public health threat throughout the world. Dairy products are susceptible to contamination through a wide variety of physical, microbial, and chemical hazards. Risks of microbiological hazards are of immediate and serious concern to human health. Milk was inoculated with Bacillus cereus and stored at 10, 15, 20, and $30^{\circ}C$ for 7 days. We monitored the effect of the temperature on growth rate and variance of toxin production. The growth rate of B. cereus was suppressed in low temperature. We confirmed that the growth rate and the toxin production were accelerated when the storage temperature was increased. B. cereus began to produce toxins when the number of bacteria was higher than $10^7CFU/mL$. Therefore, managing the storage temperature of milk is important to inhibit the growth and the toxin production of B. cereus.

Keywords