Influence of Fat Globules on Pulsed Electric Field Sterilization of Milk

Nakamura, Gomaru; Oishi, Ryo; Nuki, Hirotaka; Katsuki, S.; Masuda, Norihiko; Shimizu, Yuma

doi:10.1541/ieejfms.141.597

Cited by 1 publication

(2 citation statements)

References 24 publications

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“…However, the results of our current experiment showed no significant difference in the disinfection effect between the AC voltage and the positive pulse voltage. Nevertheless, our findings confirm that the increase in the disinfection rate aligns with previous studies, occurring due to the rise in electric field intensity applied across all voltage types, including DC, AC, and pulse voltages [ 34 , 35 , 36 , 40 , 41 , 42 , 43 , 44 , 45 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ]. We also observed a correlation between the bacterial disinfection rate and the applied voltage frequency.…”

Section: Discussionsupporting

confidence: 92%

“…Their findings underscored the significant influence of applied voltage, capacitor capacitance, and suspension conductivity on viability, while the treatment layer volume and the electrode connection method had no effect on viability [ 34 ]. Furthermore, Uemura et al (2016) and Nakamura et al (2021) achieved a 4.0 logarithmic reduction through the pulsed electric field pasteurization of orange juice and milk, respectively, surpassing the efficacy of high-temperature treatments [ 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

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Disinfection of Bacteria in Aerosols by Applying High Voltage to Stranded Wire Electrodes

Ueno,

Takada,

Zaizen

et al. 2024

Microorganisms

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The inactivation of airborne pathogenic microorganisms is crucial to attenuate the dissemination of infectious diseases induced by airborne pathogens. Conventional air disinfection methodologies, such as ultraviolet (UV) irradiation and ozone treatment, have demonstrated limited efficacy. Consequently, we investigated the potential of employing pulsed voltages to effectively eradicate bacteria within aerosols. Our inquiry revealed that the bacterial disinfection rate increased proportionally with elevated applied voltage and frequency. For instance, when a pulsed voltage of 20 kV and a frequency of 500 Hz were applied, a substantial disinfection rate exceeding 6.0 logarithmic units was attained. Furthermore, with the utilization of the stranded wire anodes, the disinfection intensity could be augmented by up to 2.0 logarithmic units compared with the solid wire configuration. Through the utilization of a stranded wire electrode model, we scrutinized the electric field encompassing the electrode, revealing a non-uniform electric field with the stranded wire electrode. This observation indicated an amplified bacterial disinfection effect, aligning with our experimental outcomes. These findings significantly enhance our comprehension of efficacious approaches to electrically disinfecting airborne bacteria.

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