Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Green Tea Seed Oil on the Cholesterol, TBARS and Inflammatory Responses in C57BL/6 Mice Fed High Cholesterol Diet

녹차씨기름이 고콜레스테롤식이를 섭취시킨 C57BL/6 Mice의 콜레스테롤, TBARS 및 염증반응에 미치는 영향

  • Kim, Jong-Kyung (School of Food and Life Sciences, Biohealth Product Research Center, Inje University) ;
  • Kim, So-Hee (School of Cookery and Nutrition, Dong-Ju College) ;
  • Noh, Kyung-Hee (School of Food and Life Sciences, Biohealth Product Research Center, Inje University) ;
  • Jang, Ji-Hyun (School of Food and Life Sciences, Biohealth Product Research Center, Inje University) ;
  • Song, Young-Sun (School of Food and Life Sciences, Biohealth Product Research Center, Inje University)
  • 김종경 (인제대학교 의생명공학대학 식품생명과학부, 바이오헬스소재연구센터) ;
  • 김소희 (동주대학 외식조리 & 영양계열) ;
  • 노경희 (인제대학교 의생명공학대학 식품생명과학부, 바이오헬스소재연구센터) ;
  • 장지현 (인제대학교 의생명공학대학 식품생명과학부, 바이오헬스소재연구센터) ;
  • 송영선 (인제대학교 의생명공학대학 식품생명과학부, 바이오헬스소재연구센터)
  • Published : 2007.03.31
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Abstract

Effects of green tea seed oil intake on the serum cholesterol, the thiobarbituric reactive substances (TBARS) formation of liver and inflammatory markers of plasma and macrophage in cholesterol fed mice were investigated, comparing to the intakes of corn oil and olive oil. C57BL/6 mice were divided into three groups and fed the experimental diets: supplemented corn oil, green tea seed oil and olive oil to cholesterol diet, respectively, at the level of 10% for 9 weeks. The increased levels of serum cholesterol of green tea seed oil group were significantly (p<0.05) lower than that of corn oil group until 6 weeks. The TBARS formation in liver of green tea seed oil and olive oil groups were significantly (p<0.05) reduced than those of corn oil group. The contents of inflammatory markers ($LTB4,\;TNF-{\alpha},\;PGE2,\;NO$) in plasma and macrophage did not show significant differences among the experimental groups. These results showed that green tea seed oil could exert the activity of decreasing serum cholesterol and the antioxidative activity in cholesterol fed mice liver. Therefore, we suggest that green tea seed oil might be developed as a high quality edible oil.

녹차씨유의 장기간 섭취가 혈청 콜레스테롤과 간 조직에서의 항산화능 및 염증반응 인자에 미치는 영향을 동맥경화 유발이 용이한 콜레스테롤식이를 섭취시킨 쥐에서 연구하였다. 4주령의 C57BL/6 mice($male,\;20.01{\pm}0.24\;g$)를 3군으로 나눈 후 콜레스테롤식이에 옥수수유, 녹차씨유, 올리브유를 각각 10%씩 함유한 식이를 9주간 섭취시켰다. 3주마다 안구혈관으로부터 혈액을 취해 혈청 콜레스테롤을 측정하였고 항산화능은 9주 후 간 조직에서 TBARS로 측정하였으며 혈장과 대식세포에서의 LTB4, TNF-α, PGE2, NO측정을 통하여 염증반응인자에 미치는 영향을 알아보았다. 실험군 간의 체중의 증가는 녹차씨유군에서 올리브유군에 비해 유의적으로 감소하였으며, 식이섭취량은 녹차씨유군에서 유의적으로 낮았으나(p<0.05) 군 간의 식이효율에는 유의적 차이가 없었다. 녹차씨유군에서 다른 군에 비해 체중이 감소한 것은 유의적인 차이는 없었으나 식이섭취량이 다소 낮은 수준에 기인한 것으로 사료된다. 간의 무게는 올리브유군에서 가장 낮았으나 녹차씨유군과 옥수수유군 간에는 차이가 없었다. 혈청의 콜레스테롤농도는 식이 섭취 6주까지는 모든 군에서 증가하였으나 그 증가수준은 녹차씨유군에서 옥수수유군에 비해 유의적으로 낮았으며(p<0.05) 식이섭취 9주에는 군 간에 유의적 차이를 보이지 않았다. 간조직의 TBARS는 옥수수유군에 비해 녹차씨군과 올리브유군에서 모두 유의적으로 감소하는 것으로 나타났다(p<0.05). 혈장의 LTB4, TNF-α, NO의 생성능은 녹차씨유 섭취군에서 가장 낮은 경향을 보였으며 대식세포에서는 녹차씨유을 섭취시킨 군이 옥수수유를 섭취시킨 경우보다 이들 염증반응인자의 생성정도가 다소 낮은 경향을 보였으나 실험군들 간에 유의적인 차이는 보이지 않아 녹차씨유는 염증반응인자에 대하여 다른 식물성기름과 다르지 않는 영향을 나타내었다. 이상의 결과로 미루어 볼 때 올리브유와 지방산 조성이 유사한 녹차씨유의 일정기간섭취는 콜레스테롤식이 섭취에 따른 혈장의 콜레스테롤 농도 억제하는 효과가 있으며 옥수수유 섭취군에 비해 효과적으로 TBARS생성을 낮추므로 녹차씨유가 콜레스테롤식이 섭취에 따른 산화적 스트레스를 방어하는 효과가 있고 녹차씨유가 혈장과 대식세포에서의 염증반응에 미치는 영향은 옥수수유나 올리브유와 크게 다르지 않는 것으로 생각되었다.

Keywords

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