Inactivation of Lactobacillus brevis in orange juice by high-intensity pulsed electric fields

2005 ◽  
Vol 22 (4) ◽  
pp. 311-319 ◽  
Author(s):  
Pedro Elez-Martínez ◽  
Joan Escolà-Hernández ◽  
Robert C. Soliva-Fortuny ◽  
Olga Martín-Belloso
Author(s):  
Tomasz Dróżdż ◽  
Paweł Kiełbasa ◽  
Agnieszka Nawirska-Olszańska ◽  
Kinga Dziadek ◽  
Ewelina Kukiełka ◽  
...  

The present study was conducted on the Ertec SU-1 sterilizer, a device designed to test sterilization processes of food samples using pulsed electric fields (PEF) of high intensity and for rapid sterilization of biological samples at low temperatures. The operation of the sterilizer is based on electro-perforation of the cell membrane. The aim of the paper is to show that the PEF method increases the concentration of polyphenolic compounds and decreases the antioxidant activity. Orange juice was used as a material to eliminate growth of microorganisms contained in it. The microorganisms were exposed to pulsed electric fields. The study results proved that a certain number of PEF pulses definitively eliminated microorganisms in the examined material.


2003 ◽  
Vol 17 (11) ◽  
pp. 1-23 ◽  
Author(s):  
Stephen J. Beebe ◽  
Paula M. Fox ◽  
Laura J. Rec ◽  
Lauren K. Willis ◽  
Karl H. Schoenbach

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