High Pressure Processing (HPP) also known as high pressure pascalization or cold pasteurization is a non-thermal (5ºC – 20ºC) food and beverage preservation method that guarantees food safety and achieves an increased shelf life, while maintaining the optimum attributes of fresh products.
It is based on the use of high isostatic pressure transmitted by water of up to 6,000 bar /600MPa /87,000 psi, held for a few minutes. This pressure is transmitted uniformly and instantaneously throughout the product, therefore achieving an effect equivalent to pasteurization, except without the use of heat.