A solution for reducing hydrocyanic acid content

Commission Regulation (EC) No 1881/2006 (2) sets maximum levels for certain contaminants, including hydrocyanic acid, in foodstuffs.

The European Commission has set the maximum permitted level of hydrocyanic acid at 150 mg/kg for linseed.

Extremely toxic, hydrocyanic acid is produced naturally by certain plants, and can be found in bitter almonds, peach pits (and more generally in the pits of fruits of the Prunus genus).

It is miscible in all proportions with water and boils at 26°C.

The saturated steam pasteurisation system eliminates a significant proportion of the hydrocyanic acid contained in linseed. It also reduces the microbial load by 5 log of salmonella. Steripure’s equipment is capable of treating quantities ranging from a few kilograms to several dozen tonnes a day.

This highly volatile compound attaches itself to the water molecules carried by the steam, which are then evacuated by the final vacuum in the process.

Only this principle of saturated steam treatment under vacuum can achieve this result, which no other thermal system at ambient pressure without the use of vacuum can.

The advantage is twofold:

  • Reduction in the microbial load
  • Reduction in the concentration of the acid present on the linseed.

Please contact us for more information.