Applied Biological Chemistry

  • 제51권3호
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  • Pages.200-206
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  • 2008
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  • 2468-0834(pISSN)
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  • 2468-0842(eISSN)
한국응용생명화학회 (The Korean Society for Applied Biological Chemistry)
권호 표지

쌀 배아와 흑미 미강 색소 첨가 배아젤리가 고콜레스테를 식이 흰쥐의 지질대사와 항산화효소 활성에 미치는 영향

Effects of Rice Embryo and Embryo Jelly with Black Rice Bran Pigment on Lipid Metabolism and Antioxidant Enzyme Activity in High Cholesterol-Fed Rats

  • 조민경 (경북대학교 식품영양학과) ;
  • 김미현 (경북대학교 식품영양학과) ;
  • 강미영 (경북대학교 식품영양학과)
  • Cho, Min-Kyung (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Kim, Mi-Hyun (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Kang, Mi-Young (Department of Food Science and Nutrition, Kyungpook National University)
  • 발행 : 2008.09.30
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초록

본 연구는 쌀 배아를 활용한 만성 대사성질환 예방용 제품 및 건강기능성 식품 개발의 일환으로써 고콜레스테롤 식이를 급여하여 고지혈증을 유발시킨 흰쥐에서 15%의 배아와 25%의 흑미 미강색소 배아젤리의 첨가가 혈장과 간 조직의 지질 대사와 항산화효소의 환성에 미치는 영향을 살펴보았다. 실험 식이를 6주 간 급여한 결과, 배아와 흑미 미강색소 배아젤리 첨가는 실험동물의 식이섭취에 영향을 미치지 않았다. 배아군과 흑미 미강색소 배아젤리군은 고콜레스테롤 급여 대조군에 비해 혈장의 총 콜레스테롤과 LDL-콜레스테롤 및 간의 중성지방과 총 콜레스테롤 농도를 감소시키고, HDL-콜레스테롤 농도와 HDL-C/TC 비는 증가시켰으며, 동맥경화지수는 감소시켜 체내 지질대사의 개선 효과가 있었다. 혈장 GOT와 GPT 수치는 배아와 흑미 미강색소 배아젤리를 첨가하였을 때 감소하여 고콜레스테롤혈증 상태에서 간 기능 보호에 긍정적인 효과가 있었다. 또한 배아와 흑미 미강색소 배아젤리는 고콜레스테롤 급여로 인해 증가된 혈장과 간 내의 지질과산화를 억제시키는 효과가 있었다. 반면, 항산화 효소인 간 조직의 SOD와 CAT활성은 배아와 배아젤리 첨가에 따라 증가하였다. 이상의 결과로 볼 때 배아와 흑미 미강색소 배아젤리는 고콜레스테롤 식이 흰쥐의 간 조직에서의 항산화 활성을 강화시키고 산화적 손상을 억제시키는 자용이 있으며 현장과 간조직의 지질대사를 개선하여 심혈관계 질환을 예방 및 감소시킬 수 있을 것으로 사료된다.

We investigated the effect of rice embryo and embryo jelly with black rice bran pigment on lipid metabolism and antioxidant activity. Thirty 4-week-old male Sprague-Dawley rats were fed high cholesterol diets supplemented with 15% rice embryo and 25% embryo jelly added black rice bran pigment, respectively, for 6 weeks. Plasma and hepatic lipid profile, lipid peroxidation, and the activity of antioxidant scavenger enzymes in liver were examined. Supplementation with rice embryo and embryo jelly had no effect on food intakes in high cholesterol-fed rats. The plasma triglyceride concentration was not significantly different among the groups. Supplementation with rice embryo and embryo jelly resulted in lower plasma and hepatic total cholesterol (TC) concentration and high-density lipoprotein-cholesterol (HDL-C)/TC ratio and atherogenic index compared to the control group, while the plasma HDL-C concentration tended to elevated. Rice embryo and embryo jelly tended to lower plasma and hepatic levels of thiobarbituric acid reactive substances than the control group. Moreover, hepatic antioxidant enzyme activities, including superoxide dismutase and glutathione peroxidase, were significantly higher in the rice embryo and embryo jelly groups. In conclusion, rice embryo and embryo jelly was very effective in improving the lipid metabolism and reducing oxidative stress by up-regulating the hepatic antioxidant enzymes in high cholesterol-fed rats.

키워드

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