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KMID : 0380620090410060706
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Korean Journal of Food Science and Technology
2009 Volume.41 No. 6 p.706 ~ p.711
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Protective Effects of Branched-chain Amino Acid (BCAA)-enriched Corn Gluten Hydrolysates on Ethanol-induced Hepatic Injury in Rats
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Chung Yong-Il
Lee Hyeon-Gyu
Chun Hyang-Sook
Bae In-Young
Lee Ji-Yeon
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Abstract
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Hepatoprotective effects of corn gluten hydrolysates (CGH) were investigated in rats orally treated with ethanol (30%(v/v), 3 g/kg body weight/day) for 4 weeks. Six-week old Sprague-Dawley male rats were divided into four dietary groups: normal diet (N), alcohol diet (E), E+CGH 1% diet (CGH-1%), and E+CGH 3% diet (CGH-3%). Body weights and liver indices were not significantly different among the four groups. However, food intakes were lower in the CGH groups than in the normal group (p<0.05). The administration of CGH significantly reduced serum alkaline phosphatase activity by 30% compared to the alcohol diet group. Among the antioxidative enzymes assessed, catalase activity was significantly decreased by 79% in the CGH diet groups compared to the alcohol diet group. In comparison to the alcohol-treated group, aldehyde dehydrogenase activity was increased by 20%, while microsomal ethanol oxidizing system activity was decreased by 20% in the CGH-treated groups. Furthermore, the area under the curve of the blood acetaldehyde concentration versus time profile after the administration of ethanol was significantly lower for the CGH rats than for the ethanol or asparaginic acid treated groups. Thus, CGH seems to offer beneficial effects by protecting against ethanol-induced hepatotoxicity by improving the acetaldehyde-related metabolizing system.
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KEYWORD
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corn gluten hydrolysates, ethanol-induced hepatic injury, alcohol metabolism
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