In order to investigate the effect to antioxygenic substances in Pine Needles on the photooxidation of linoleic acid (linoleic acid 100mg/10ml ethanol) added antioxidants and antioxygenic substances in Pine Needles was irradiated by the tungsten lamp attached with red fitter. The Photo oxidation of linoleic acid (LA) was conformed with Lea method and rhodan method. The following results were obtained: 1. Photooxidation of LA was greatly increased the presence of photosensitizer. However the Photo oxidation of LA without photosensitizer was smoothly increased by the irradiation. 2. The Photo oxidation of LA without irradiation occured quite lately whether photosensitizer was present or absent. 3. Photooxidation of LA under the presence of photosensitizer was inhibited by the addition of dl-α-tocopherol and the acetone fraction of methanol extract of Pine Needles but inhibited by BHT. Photooxidation of LA increased gradually as the addition of BHT increased but decreased gradually as that of acetone fraction increased.

To investigate the protective action of various antioxidants on the photooxidation of rice bran oil, it was irradiated with red and visible light in presence and absence antioxidants with or without sensitizer (methylene blue). 1. Rice bran oil with and without sensitizer in chloroform-ethanol (4:1, v/v) media was largely oxidized under visible light irradiation. on the other hand, rice bran oil without sensitizer was hardly oxidized under red light irradiation. 2. Rice bran oil with sensitizer was oxidized much faster than that without. And the absorbance of it irradiated with visible was increased more than that with red light. 3. The effectiveness of antioxidants on the rice bran oil photooxidation was same order as follows: Irradiation with visible light, no addition of sensitizer β-carotene 〉 dl-α-tocopherol 〉 BHT 〉 BHA Irradiation with visible light, addition of sensitizer β-carotene 〉 BHT 〉 dl-αtocopherol 〉 BHA Irradiation with red light, addition of sensitizer β-carotene 〉 BHA 〉 BHT 〉 dl-α-tocopherol From these results, we concluded that rice bran oil was largely oxidized under visible light irradiation, therefore it must be protected from photooxidative deterioration by the addition of antioxidants.

자동산화유의 독성을 구명하기 위하여 autoxidized methyl linoleate(AOML)의 일정량을 mouse에 1 일 1 회 20 일간 경구 투여하여 혈청 및 간의 지질대사에 미치는 영향을 검토한 결과는 다음과 같다. 실험군의 혈청 TBA값과 혈청 triglyceride, phospholipid 및 total cholesterol양은 정상군에 비해 모두 증가되었으며, 전기영동 결과 혈청 lipoprotein의 조성 백분율은 albumin이 약 21% 증가된 반면, VLDL은 약 70% 그리고 LDL은 약 33% 감소되어 있었다. 실험군의 간에서의 POV, COV 및 TBA값은 모두 정상군에 비해 크게 증가하였으며, 또한 간의 triglyceride, phospholipid 및 total cholesteroldml 양도 증가하는 경향을 나타내고 있었다. 한편, 실험군의 간에서의 형태학적 변화로는 정상군에 비해 간세포의 손상과 지질의 축적이 관찰 되었다.

The antioxidant activity of petroleum ether extract of Panax ginseng roots in the oxidation of mixed methyl esters of unsaturated fatty acids(MEUFA) was investigated in vitro. The petroleum ether extract of panax ginseng roots showed the antioxidant activity and inhibited the weight gain in the autoxidation of MEUFA. And the induction periods in the autoxidation of MEUFA were related to te addition concentrations of petroleum ether extact. The antioxidant effect of petroleum ether extract on the autoxidation of MEUFA was caused by the protective formation of lipid peroxides and carbonyl compounds. From the results obtained, it was confirmed that petroleum ether extract of panax ginseng roots contained antioxidant substances.

In order to investigate the effect of ginseng saponins on the activity of lipoprotein lipase, it was attempted to conform the enzymatic hydrolysis of chylomicron with post-heparin induced plasma lipoprotein lipase of normal rabbit in vitro. And the activity of lipoprotein llipase was determined by the quantitative determination of liberated free fatty acids on the hydrolysis of chylomicron. As the result, it was observed that the ginseng saponins accelerated the hydrolysis of chylomicron by post-heparin plasma in vitro. And the optimum concentration of ginseng saponins for the activity of the lipoprotein lipase in the 2% bovine serum albumin was 10-4%. But ginseng saponins on the hydrolysis of chylomicron was influenced by the presence and the absence of albumin. And the optimum concentration of albumin and Na-cholate on the activity of lipoprotein lipase was each of the 10-6% albumin and 5mM Na-cholate. From these results, it seems that ginseng saponins might stimulate the intravascular hydrolysis of chylomicron.

In order to investigate the acute toxicity of autoxidized methyl linoleate(AOML) on the activity of serum enzymes in the mouse, we administered once 0.45ml of AOML to ICR strain mouse by using stomach tube. The following results were obtained: The total lactic dehydrogenase(LDH) activities in the serum of AOML group were generally increased than those of normal group. According to electrophoresis, the activities of LDH, were increased while those of LDH, were decreased. The activities of glutamic oxaloacetic transaminase(GOT), glutamic-pyruvic transaminase(GPT) and α-amylase in the serum of AOML group were increased more than those of normal group. The activities of alkaline phosphatase in the serum of AOML group were increased but those of isozyme were not confirmed in the normal and AOML group. In the serum protein of AOML group, albumin was increased, on the other hand γ-globulin was decreased. At the peripheral blood slide smear, lymphocytes were significantly decreased but neutrophils were increased and the morphological change of erythrocytes was observed. From these results we conclude that the AOML fed to mouse influences on the activity of various serum enzymes and blood cells in the mouse.