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The Protective Effects of Isoflavone Extracted from Soybean Paste in Free Radical Initiator Treated Rats  

Nam, Hye-Young (Department of Food Science & Biotechnology of Animal Resources, Konkuk University)
Min, Sang-Gi (Department of Food Science & Biotechnology of Animal Resources, Konkuk University)
Shin, Ho-Chul (College of Veterinary Medicine, Konkuk University)
Kim, Hwi-Yool (College of Veterinary Medicine, Konkuk University)
Fukushima, Michihiro (Department of Animal Science, Obihiro College of Agriculture and Veterinary Medicine)
Han, Kyu-Ho (Department of Animal Science, Obihiro College of Agriculture and Veterinary Medicine)
Park, Woo-Jun (U.S. Wheat Associates Inc.)
Choi, Kang-Duk (Department of Genomic Informatics, Grad. School of Bio & Information Technology Hankyong University)
Lee, Chi-Ho (Department of Food Science & Biotechnology of Animal Resources, Konkuk University)
Publication Information
Food Science and Biotechnology / v.14, no.5, 2005 , pp. 586-592 More about this Journal
Abstract
This study was performed to investigate the antioxidant effects of Korean soybean paste extracts (SPE) on 2,2-azobis (2-amidinopropane) dihydrochloride (AAPH)-induced liver damage in rats. Thirty healthy Sprague Dawley rats were selected and divided into 5 groups. Isoflavone contents were measured using HPLC technique. The antioxidant activity was measured in the plasma and liver of the rats with the following results. Levels of isoflavone in fermented soy paste, red pepper paste and soy sauce were 28.9, 30.3 and $3.4\;{\mu}g/g$ for daidzein and 244.3, 187.7 and $6.1\;{\mu}g/g$ for genistein, respectively. The activities of glutamate oxaloacetic transaminase (GOT) and glutamate pyruvate transaminase (GPT) were significantly higher in the AAPH-treated group in the SPE-AAPH group (p<0.05). The thiobarbituric acid reactive substance (TBARS) production was significantly increased in the AAPH-treated liver tissue (P<0.05). Glutathione peroxidase (GPx), glutathione reductase (GR) and catalase in the liver were significantly (p<0.05) decreased by AAPH administration. The glutathione (GSH) concentration was higher in the SPE-treated (Ed- confirm) group than in the control and other groups (p<0.05). These results suggest that SPE led to increased anti oxidative activities against AAPH-induced peroxyl radical.
Keywords
AAPH; soypaste; antioxidants; glutathione;
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Times Cited By Web Of Science : 9  (Related Records In Web of Science)
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