Onion bulbs contain a good number of phytochemicals,
most of which are hydrocarbons and their derivatives.
These include: Dipropyl disulphide , Allicin , diathyl sulphide ,
Dimethyl disulphide , Mercaptopropane or
propylmercaptan [7]. Moreover
onion as food and food condiments. Several parts of
the plant have traditional place