Process for the preparation of ajoene

摘要

The present invention is directed to a process for the preparation of ajoene which comprises the step of heating an acidic solution comprising allicin, and to ajoene which may be prepared by this process. The invention also relates to processes for the preparation of allicin in which (1) allinase plant source is mechanically treated, the product is subjected to centrifugal forces and the solution of allinase thus prepared is contacted with an aqueous solution of aliin; or (2) a solution comprising diallyl disulphide is oxidised in the presence of potassium peroxomonosulphonate at 0 to 30 °C and the resulting allicin is extracted into an organic solvent. Additionally, the invention relates to a process for increasing the concentration of allicin in an aqueous solution by freezing the aqueous solution.