Abstract: A system for process monitoring of the treatment of media, in particular a HACCP-compliant system for the preservation of foods. In order to ensure and standardize successful treatment, system comprises an electroporator for treating a medium with a pulsed electric field, at least one measuring device for determining a change of a condition parameter of the medium caused by the treatment with the pulsed electric field, and an evaluation device for comparing the determined change of the condition parameter to a predetermined change target value and for outputting a warning signal once the difference between the determined change and the predetermined change target value exceeds a limit value.

Abstract: The invention relates to a method for treating shell-fruits (3), in particular for producing shell-fruits (3) with improved shelling properties in comparison to untreated shell-fruits (3). The invention further relates to a device (1) for treating shell-fruits (3), in particular for producing shell-fruits (3) with improved shelling properties in comparison to untreated shell-fruits (3), comprising a hermetically sealable treatment chamber (2) for conditioning the shell-fruits (3). In order to provide a method and a device for treating shell-fruits which do not damage the contents of the kernel and simultaneously permit improved shelling of the shell-fruits and the opened shell to be better separated from the kernel, the method according to the invention comprises softening the shell of the shell-fruits (3) by applying an electric field, and the device according to the invention comprises at least one capacitor (4) for generating an electric field in the treatment chamber (2).