Fuente: WIPO "tomato" A process for effecting lysis of cells of plants material or parts thereof; the process incorporating the steps of: obtaining the plant material at a target particle size; combining the plant material in a fluid medium; subjecting the plant material to a set of predetermined processing conditions; deaerating the plant material thereby to substantially remove gases; introducing the plant material into a two-stage compression device, within which it is subjected to a first pressure in a high fluid pressure compression first stage, and subsequently to a second pressure in a rapid decompression second stage, wherein the first pressure is substantially higher than the second pressure thereby subjecting the plant material to cavitation of water inside the cell wall causing cell wall rupture.