01Sealed product goes in
Your product is already filled and sealed in its final flexible package. Nothing is opened, decanted, or re-handled.
The technology
What is High Pressure Processing?
HPP is a cold pasteurization method. Instead of cooking food to make it safe, we put the finished, sealed package under extreme water pressure. Pathogens do not survive it — flavor, color, and nutrition do.
Inside a cycle
Every run follows the same five stages. There is no heat, no radiation, and no additive anywhere in the process — just water and pressure.
02The vessel floods with cold water
A steel vessel fills with potable water at refrigeration temperature. Water is the only thing touching your packaging.
03Pressure ramps to 6000 bar
That is roughly six times the pressure at the deepest point of the ocean, applied evenly from every direction at once.
04Hold for 2–4 minutes
The pressure collapses the cell structures of pathogens and spoilage organisms while leaving small molecules — flavor, color, vitamins — untouched.
05Depressurize and release
Pressure drops in seconds, the load comes out cold, and QA releases it against your specification with full cycle data attached.
HPP vs. thermal pasteurization
Both deliver food safety. Only one of them leaves your product tasting the way you formulated it.
| High Pressure Processing | Thermal pasteurization | |
|---|---|---|
| Process temperature | Cold — 2–10 °C throughout | 70–90 °C thermal hold |
| Effect on flavor | Tastes like fresh, unprocessed product | Cooked, caramelized, or flat notes |
| Heat-sensitive nutrients | Largely retained | Vitamin C and enzymes degraded |
| Color & texture | Preserved | Often dulled or softened |
| Preservatives needed | None | Often required for shelf life |
| Pathogen reduction | 5-log validated | 5-log validated |
| Packaging | Final sealed flexible package | Bulk, then fill post-process |
What HPP does well
High-moisture, refrigerated, low-to-mid acid foods in flexible packaging: juices, dips, RTE proteins, sauces, and pet food.
What HPP will not fix
It is not a shelf-stable sterilization step, it will not rescue a contaminated raw ingredient, and it does not inactivate all spores.
Packaging matters
Packages must flex slightly under pressure. Rigid glass, metal cans, and headspace-heavy containers are not compatible.
Ready to pressure-treat your next production run?
Send us your product, packaging format, and volumes. We'll come back with a tolling rate, validation plan, and available slots — usually within one business day.
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