Sanitation System Series 2: High-Pressure Processing (HPP) Made Simple - Why Clean Equipment Matters
High-pressure processing (HPP) is a food preservation method that uses very high water pressure instead of intense heat. Packaged food is placed inside a pressure vessel filled with water and treated at approximately 300–600 MPa. The pressure can reduce many harmful and spoilage-causing microorganisms while helping the food retain its fresh taste, colour, texture, and nutrients. However, some bacterial spores and food enzymes may survive, so many HPP foods must still be kept refrigerated.