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Biological Window Effects of High-intensity Pulsed Magnetic Field Sterilization on Escherichia Coli
Ma Haile *,He Ronghai,Luo Lin ,Wang Zhenbin ,Wang Heli
Jiangsu University
*Correspondence author
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Funding: 国家863计划重点项目（No.2007AA100405）
Opened online:16 February 2009
Accepted by: none
Citation: Ma Haile ,He Ronghai,Luo Lin .Biological Window Effects of High-intensity Pulsed Magnetic Field Sterilization on Escherichia Coli[OL]. [16 February 2009] http://en.paper.edu.cn/en_releasepaper/content/29044
 
 
High-intensity Pulsed Magnetic Field (PMF) sterilization is a promising technology for the nonthermal sterilization of food. A self-designed pulsed magnetic field sterilization equipment, whose power is up to 4.5 Tesla, was employed to investigate the inactivation effect of high-intensity PMF on Escherichia coli 8099 and to explore the biological effect of PMF sterilization. The survival rate (SR) of E. coli 8099 significantly decreased after PMF treatment. E. coli 8099 in log phase period is more sensitive to PMF treatment. Biological window effect of PMF power was found in high-intensity PMF sterilization of E. coli 8099. 1.5T, 2.5T, and 4T are a series of “power windows” and power windows consistent with the computative equation T = 0.25n (n+1) +1 (n is ordinal number of power window, n=1 to 3).
Keywords:high-intensity pulsed magnetic field;sterilization;Escherichia coli;biological window effect
 
 
 

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