Sunflower seeds grow in the center of the sunflower. These flowers can grow quite large and turn their flowers towards the sun the entire day. Harvesting the sunflower seeds is done by machines. Processing After they are harvested the seeds are cleaned, sieved and pealed. The pealing of the seeds takes place under very high pressure. The seeds are blasted against a hard plate, making the shell burst open.
The shell is separated from the core by suction. After de-shelling the seeds they are sieved again, sorted and checked until the seeds have a purity of 99.8%.
There is some tolerance for broken seeds.