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Showing results for: inactivation

Evaluation of 4.0 GHz RF Exposure Effects on Bioaerosols Containing Bovine Coronavirus.

Research RF Safe Research Library Jan 1, 2026

This in vitro study tested whether 4.0 GHz microwave exposure affects survival of aerosolized bovine coronavirus in a waveguide system. Using TCID assays, the authors report no statistically significant reduction in virus survival compared with controls and no significant change in variability. The paper emphasizes…

[Modulation of Ca(2+)-Dependent Proteiolysis under the Action of Weak Low-Frequency Magnetic Fields].

Research RF Safe Research Library Jan 1, 2015

This animal/model-organism study examined whether weak low-frequency magnetic fields tuned to a proposed parametric resonance for calcium ions affect Ca(2+)-dependent proteolysis. It reports time-dependent modulation of Ca(2+)-dependent proteinase activity in fish and whelk and states that a minimal exposure time for…

Inactivation of Escherichia coli, Saccharomyces cerevisiae, and Lactobacillus brevis in Low-fat Milk by Pulsed Electric Field Treatment: A Pilot-scale Study.

Research RF Safe Research Library Jan 1, 2015

This pilot-scale study evaluated pulsed electric field (PEF) processing of low-fat milk inoculated with E. coli, S. cerevisiae, or L. brevis. At 10 kV/cm and 200 kJ/L total pulse energy, the study reports multi-log microbial reductions, with >5-log reductions during storage at 200–250 kJ/L and slow regrowth over 15…

[Modulation of Ca(2+)-dependent proteinase activity in invertebrates and fish under the action of weak low-frequency magnetic fields].

Research RF Safe Research Library Jan 1, 2013

This study examined whether weak low-frequency magnetic fields affect Ca2+-dependent proteinases (calpains) in fish and invertebrates using in vivo and in vitro experiments. The authors report a significant decrease in calpain activity in animals exposed to a field tuned to Ca2+ parametric resonance, and substantial…

Combined effect of temperature and pulsed electric fields on apple juice peroxidase and polyphenoloxidase inactivation.

Research RF Safe Research Library Jan 1, 2008

This laboratory study evaluated pulsed electric fields (PEF) combined with preheating to inactivate peroxidase (POD) and polyphenoloxidase (PPO) in freshly prepared apple juice. The highest reported inactivation occurred with preheating to 50°C and PEF at 40 kV/cm for 100 μs, exceeding the reductions seen with…

[Fluorescence spectra analysis of papain treated by pulsed electric field].

Research RF Safe Research Library Jan 1, 2007

This in vitro study used fluorescence excitation, emission, and polarization spectra to assess structural changes in papain after pulsed electric field (PEF) treatment. Under the reported PEF conditions (50 kV/cm, 1500 Hz, 40 µs pulses, 19,800 pulses), papain activity decreased by 56.5%. Spectral changes (increased…

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