in addition, Liu and team (2005) proved that some antioxidant components were transferred from kefir grains to milk and soy-milk during fermentation. Besides this, Je Ruei Liu and group (2005) found that milks fermented by kefir grains demonstrated an enhanced activity as regards scavenging the DPPH radical as compared to unfermented milks, stating that kefir has got an influence on scavenging the DPPH radicals.