Impact grinding of green peas (pivum sativum) 

Comminution device: Pulverisette 14 (Fritsch GmbH, Germany) with hammer mill set-up.
No mesh is equipped to ensure single impact comminution.
Set points: 6000; 7000; 8000; 9000; 10000; 11000; 12000; 13000; 14000; 15000; 16000; 17000; 18000; 19000; 20000 rpm.
50 green peas are comminuted in succession per set point.

Analysis by optical microscopy (Axio Imager M1m, Zeiss, Germany) to aquire mosaic images.
Analysis of the images by use of imageJ (Biovoxxel toolbox particle analyser, Fiji Software).
