摘要
高压脉冲电场灭菌技术是近年来发展起来的极有潜力的非热灭菌技术,但由于其参数较多,对于最佳的灭菌参数至今未有定论。所以该论文提出了一种将高压脉冲电场灭菌与传统的热杀菌技术相结合的灭菌技术,旨在发挥两者的优点,实现一种简单、节能、快速、安全、高效的灭菌技术。通过实验,可以发现,将大肠杆菌在45℃条件下进行预热5min后再进行高压脉冲电场灭菌,大肠杆菌的存活率已降至13.69%。这样既节省了能源,又适用于一些不能够加热至45℃以上的食物灭菌,是一种可以广泛应用的灭菌技术。
High Pulse Electric Field（PEF）,which was highly developed in recent years,is a potential non-thermal sterilization technology. However,because of its complicated parameters,such as field strength,pulse width, frequency,time,pulse number and other parameters,the best sterilization parameters are still unknown. In this study a combination sterilization technique was designed,which took the advantages of both PEF sterilization technique and the traditional thermal sterilization technology,to achieve a simple,energy-saving,fast,safe and efficient sterilization technology. Through the experiment,heating Escherichia coli（E. coli） at 45℃ for 5min before the high PEF sterilization could decrease the survival rate to 13.69%. In conclusion,this new combination sterilization technique could not only save energy,but also apply to the food sterilization which could not be heated up to 45℃.
出处
《食品工业科技》
CAS
CSCD
北大核心
2014年第2期140-142,149,共4页
Science and Technology of Food Industry
基金
浙江省重大科技专项(2012C03009-1)
关键词
高压脉冲电场
大肠杆菌
热灭菌与非热灭菌技术
pulsed electric fields
Escherichia coli
non-thermal and thermal sterilization technology
