Abstract: he scavenging effects of’ grape seed and .grape peel water extract on active oxygen superoxide radical (d- )and hydroxyl radical (’ OH ) ’were studied by chemiluminescence assay,and their scavenging effect on 1. 1 Diphenyl-1-2-picryl (DPPH ) was studied by spectrophotometry’.The results show’. that scavenging effects of grape seed and grape peel water extracts on O2’ OH and DPPH’ are strong with quantitative relationship.It indecate that there are some anti-free radical substances present in grape seed and grape peel.Their anti-free radical active orders are fresh grape seed;>grape peel>dry grape seed.

Key words: grape seed grape peel scavenging effect radical