Title :
Reduction of microbial growth in milk by pulsed electric fields
Author :
El-Hag, Ayman ; Otunola, Adedayo ; Jayaram, Shesha H. ; Anderson, William A.
Author_Institution :
American Univ. of Sharjah, Sharjah
fDate :
June 30 2008-July 3 2008
Abstract :
A study was conducted to assess the effectiveness of pulsed electric field (PEF) inactivation of a heterogeneous community of microbes in milk over electric field strength of 10 - 40 kV/cm and 10 to 120 pulses per millilitre. High electric field strength and pulse number decreased microbial growth but inoculum-size affected PEF effectiveness when only a few pulses were applied. The composition of the microbial community plays an important role in the effectiveness of PEF inactivation of microbes in milk, but the process looks promising, as it was potent against microbes that were recalcitrant to commercial pasteurization with a 1.5 log-reduction.
Keywords :
beverage industry; dairy products; electric field effects; food safety; microorganisms; commercial pasteurization; electric field strength; inoculum-size; microbial community plays; microbial growth reduction; milk; pulsed electric field inactivation; Dairy products; Food preservation; Microorganisms; Pulse measurements; Pulse shaping methods; Pulsed power supplies; Shape; Switches; Testing; Thyratrons;
Conference_Titel :
Dielectric Liquids, 2008. ICDL 2008. IEEE International Conference on
Conference_Location :
Futuroscope-Chasseneuil
Print_ISBN :
978-1-4244-1585-4
Electronic_ISBN :
978-1-4244-1586-1
DOI :
10.1109/ICDL.2008.4622478
