Method for high-pressure preservation
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United States of America Patent
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Issued Date -
Apr 15, 2004
app pub date -
Nov 20, 2003
filing date -
Dec 4, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method for treatment of a product, in particular preservation of a food product or pharmaceutical product, by use or high pressure. The invention is characterized in that the high pressure process is carried out under such conditions that leakage of heat from the product to the surrounding material is minimized or even prevented. In one embodiment the product is pressurized to at least 100 MPa at a pressure is at least 5 MPa.multidot.s.sup.-1. In one embodiment the vessel wall has a heat conductivity no higher than 25 W.multidot.m.sup.-1.multidot.K.sup.-1, preferably not higher than 10 W.multidot.m.sup.-1.multidot.K.sup.-1, more preferably not higher that 1 W.multidot.m.sup.-1.multidot.K.sup.-1 . In another embodiment a liner is used having an adiabatic temperature rise of between 1 and 10 K per 100 MPa, preferably between 2 and 7 K per MPa.
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