Abstract: The nutritional components of D. Superbus L. were analyzed and its scavenging effects on active oxygen were studied by using chemiluminescence. Some factors affecting the scavenging action were also investingating.The results showed that D.superbus L. had good nutritional composition. It could give significant scavenging effects on OH•,H2O2 and especially on O2-•.For the same free radical, the scavenging efficiency decreased in the following sequence:the first aqueous extract>the second >the third> the fourth extract and it was inversely proportional to the storing time. These results suggested that D. Superbus L.had the function of scavenging free radical,and delaying aging. It was a good healthy beverage.

Key words: D. Superbus , L. Radial scavenging , Chemiluminescence