发明名称 |
Method and apparatus for electrically treating foodstuffs for preservation |
摘要 |
A method and apparatus for electrically treating foodstuffs flowing through a treatment chamber with low energy, high voltage electrical pulses for non-thermal pasteurization and/or sterilization. Instant-charge-reversal electrical pulses are applied to a foodstuff located between two electrodes in a treatment chamber, each electrical pulse having a pulse width in a range from about 1 to 5 mu s with vertically rising voltage to a peak followed immediately with a decreasing voltage through zero volts and continuing to a voltage peak of opposite polarity and rising vertically back to zero volts. The electrical pulses are very low energy (0.1-25 Joules/pulse) and the field strengths are in the range 15 kVolts/cm to 120 kVolts/cm. This instant-charge-reversal electrical pulse is shown to have a much greater microbial killing power compared to other pulse waveforms used to treat foodstuff. The apparatus uses an electrode arrangement including a cylindrical inner electrode and an annular disc with the cylindrical electrode inserted through the hole in the disc.
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申请公布号 |
US6093432(A) |
申请公布日期 |
2000.07.25 |
申请号 |
US19980133368 |
申请日期 |
1998.08.13 |
申请人 |
UNIVERSITY OF GUELPH |
发明人 |
MITTAL, GAURI SHANKAR;HO, SHIRLEY YUET WA;CROSS, JAMES D.;GRIFFITHS, MANSEL W. |
分类号 |
A23C3/00;A23L2/50;A23L3/00;A23L3/32;(IPC1-7):A23C3/00 |
主分类号 |
A23C3/00 |
代理机构 |
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主权项 |
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地址 |
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