Abstract:The antioxidation effect of Se-riched soybean oligopeptides were researched. 3 weeks of age 90 male SD rats were randomly divided into 6 groups, namely Ⅰ(control group ), II ( soy protein ), III (soy polypeptides ), IV (sodium selenite), V ( soy oligopeptides) and VI (Se-riched soy oligopeptides), in the experimental environment, for each of the groups fed the low selenium based feed at the same time, the second group of oral feeding of soybean protein, group Ⅲoral feeding of soybean polypeptide, the IV group of oral feeding of sodium selenite, the Article V group oral feeding soybean oligopeptides, on the sixth group oral feeding soybean oligopeptides, group 1oral feeding with the same volume of drinking water. Feeding for 4 weeks, serum and liver MDA content, GSH-Px and SOD activity of all experimental rats were measured. Results showed that the II, III, IV, V and VI groups were decreased in serum and liver MDA content, GSH-Px and SOD activity increased, but the II and Ⅲ group had no significant effect and the V group had notable effect. The IV, VI group had extremely significant effect. Each sample on blood serum and liver MDA content and GSH-Px activity effect tends to be consistent, but the serum SOD activity was stronger than hepatic SOD activity. Those meant that the Se-riched soybean oligopeptides had antioxidant functions, and the function was stronger than inorganic selenium, and obviously stronger than soybean oligopeptides which had not selenium. The Se-riched soybean oligopeptides played the main antioxidant function and was the trace element selenium.
