Title :
Correlation of Fourier transforms of pulsed electric field waveform and microorganism inactivation
Author_Institution :
Dept. of Chem., Connecticut Univ., Stamford, CT, USA
fDate :
2/1/1998 12:00:00 AM
Abstract :
The real ℜ[F(ω)] and imaginary 𝔍[F(ω)] Fourier transform parameters of temporal waveforms comparable to those used in PEF (pulsed electric field) studies of microorganism Sf (survival fraction) as a function of waveform have been calculated. log Sft is a linear function of the log of the ratio of areas 𝔍[F(ω)]/ℜ[F(ω)] and log of 𝔍[F(ω)]/ℜ[F(ω)]+𝔍[F(ω)]. The correlation with the largest slope, was found for the latter ratio. The log (Sf ) also was found to correlate with the log of the integrated pulse magnitude M(ω) and log of temporal pulse area. The correlation coefficients are ⩾0.95
Keywords :
Fourier transforms; bioelectric phenomena; biological effects of fields; cellular biophysics; waveform analysis; Fourier transform; correlation coefficient; microorganism inactivation; pulsed electric field; survival fraction; temporal waveform; Chemistry; Computed tomography; Discrete Fourier transforms; Equations; Food industry; Fourier transforms; Frequency domain analysis; Microorganisms; Pulse measurements; Sampling methods;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
