I first found out about high pressure processing via [preshafruit](https://csiropedia.csiro.au/csiro-drinks-to-worlds-best-new-juice/). There's a [wiki](https://en.wikipedia.org/wiki/Pascalization) article about the process. A recent article was published regarding HPP and milk processing (DOI: 10.1016/j.ifset.2019.01.009) which you can read with your favourite science hub.