Abstract: The proportions of cottonseed protein isolates including glutelin,albumin,globulin and prolamin were analyzed,and their antioxidation and functional properties were investigated,such as water absorption capacity,oil absorption capacity,emulsifying capacity and stability and foaming capacity and stability.It was found that albumin has better function properties,including water absorption,emulsifying capacity,emulsion stability and forming capacity,but is of poor content in the cottonseed protein.Glutelin has poor function properties,but is abundant in the cottonseed.The anti-oxidations of all the cottonseed protein isolates are poor.So it is necessary to enhanced function of cottonseed protein by some modifications.

Key words: cottonseed protein isolates, functional properties, antioxidation