Parametric control in pulsed light sterilization of packages and

Details Parametric control in pulsed light sterilization of packages and Parametric control in pulsed light sterilization of packages and

1997-05-01

1999-07-20

Berman, Jack I.

Radiant energy

Irradiation of objects or material

25045511, 422 24, B65B 5508, A61L 210

Patent

active

059258853

ABSTRACT:
An approach for sterilizing microorganisms at a target object employs a flashlamp system including means for generating pulses of light, and for deactivating microorganisms within the target object by illuminating the target object with the pulses of light having been generated; a photo-sensitive detector positioned so as to receive a portion of each of the pulses of light as a measure of an amount of light illuminating the target object, for generating an output signal in response thereto; and a control system, coupled to the flashlamp system and the photo-sensitive detector, for determining, in response to the output signal, whether the pulses of light are sufficient to effect a prescribed level of deactivation of microorganisms in the target object. In accordance with this approach sterilizing microorganisms involves steps of generating a pulse of light; deactivating microorganisms at the target object by directing the pulse of light having been generated at the target object; receiving a portion of the pulse of light as a measure of an amount of the pulse of light illuminating the target object; generating an output signal in response to the receiving of the portion of the pulse of light; and determining; in response to the generating of the output signal, whether the pulse of light is sufficient to effect a prescribed level of deactivation of microorganisms in the target object.

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Dunn, et al.; "Pulsed Light Treatment of Food and Packaging", Food Technology, vol. 49:9, pp. 95-98 (Sep. 1995).

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