High Pressure Processing Pressure Sensor
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Accused Products
Abstract
A pressure sensor and its use for visually determining whether a preselected pressure threshold has been achieved, for example during high pressure processing treatment of a foodstuff. The pressure sensor includes a contained color-changing system having a dye, a developer, and a solvent; upon achievement of the preselected pressure threshold, the dye and the developer interact, resulting in a visible color change. Further, the visible color change can be retained upon a decrease in pressure and upon an increase in temperature, thereby effectively recording the achievement of the preselected pressure threshold during the high pressure processing treatment.
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Citations
169 Claims
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1-147. -147. (canceled)
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148. A pressure sensor for visually determining whether a pressure threshold has been achieved, said pressure sensor comprising:
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a color-changing system comprising; a dye; a developer; and a solvent; wherein said color-changing system is contained such that said dye, said developer, and said solvent are encapsulated together; wherein said developer variably interacts with said dye according to the pressure of said color-changing system; and wherein upon achievement of said pressure threshold, said dye and said developer interact, resulting in a visible color change. - View Dependent Claims (149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161)
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162. A method for visually determining whether a pressure threshold has been achieved during high pressure processing treatment of a foodstuff, comprising:
reliably associating a pressure sensor with said foodstuff, said pressure sensor comprising; a color-changing system comprising; a dye; a developer; and a solvent; wherein said color-changing system is contained such that said dye, said developer, and said solvent are encapsulated together; wherein said developer variably interacts with said dye according to the pressure of said color-changing system; and wherein upon achievement of said pressure threshold, said dye and said developer interact, resulting in a visible color change. - View Dependent Claims (163, 164, 165)
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166. A method for indicating achievement of a pressure threshold during high pressure processing treatment of a foodstuff, comprising:
reliably associating a pressure sensor with said foodstuff, said pressure sensor comprising; a color-changing system comprising; a dye; a developer; and a solvent; wherein said color-changing system is contained such that said dye, said developer, and said solvent are encapsulated together; wherein said developer variably interacts with said dye according to the pressure of said color-changing system; and wherein upon achievement of said pressure threshold, said dye and said developer interact, resulting in a visible color change. - View Dependent Claims (167, 168, 169)
Specification