[Medical and biological evaluation of safety of protein concentrate from genetically-modified soybeans. Biochemical studies].

: The effect of single and long-term reception of the antioxidant preparation Magnum C (MC) on blood plasma antioxidant activity (AOA) of volunteers has been investigated. AOA was measured with chemiluminescence test using the hemoglobin-hydrogen peroxide-luminol system. MC contains ethereal form of vitamin C and bioflavonoids as the basic antioxidant components. It was determined that blood plasma AOA was increased on the average by 36% (p < 0.01) 3 hours after single intake of 4 capsules of MC. In case of long-term reception of MC (1 capsule twice in day during 4 weeks) the greatest increase in the blood plasma AOA was about 60% (p < 0.001) and was observed on the 14th day. On the 7th day after completion of MC reception the level of blood plasma AOA was, approximately, 20% above its initial value (p < 0.05). This is probably due to prolonged action of MC.