The effect of high frequency electromagnetic field has been used for inactivation pathogen microorganism of different packed natural juices(juice of apple , juice of peach , juice of apricot).All samples of juices were filled in pouches then electromagnetic induction which discharges square-wave pulses with variable voltage 1-20 kV/cm and different frequency(2- 3.5GHz , 3.5-5 GHz , 5-6.5GHz) have been used. Pure cultures of E. coli O160: H6 (Yerevan, Armenia), Salmonella Enteritidis 1.23 (Yerevan ;Armenia) L. monocytogenes 1.91 (Yerevan ;Armenia) were used to inoculate (1ml ) with samples before EMI to scientifically prove the usage of electromagnetic field for sterilization of these packed fruit juices against population of pathogen microorganism, so we want to experimentally show that EMI can substitute thermal processing in conservation industries. According to" Wald test" the effect of p-value for type of juices , type of treatments ,and for inactivation E-coli ,Salmonella Enteritidis and L. monocytogenes have significant level ( p-value=0,001) . Microbiological shelf-life were also determined in these natural fruit juices during 2 month which have been stored at 5 oc in order to ensure about the safety of pouches
