Journal of Nutrition and Health

The Korean Nutrition Society (한국영양학회)
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The Effect of Grape Seed Oil, Perilla Oil, or Corn Oil-Containing Diet on Lipid Patterns in Rats and Fatty-Acid Composition in Their Liver Tissues

포도씨유, 들깨유 및 옥수수유의 급여가 흰쥐의 체내 지질패턴 및 간조직의 지방산 조성에 미치는 영향

  • 강명화 (호서대학교 식품영양학과) ;
  • 박원종 (공주대학교 산업과학대학 식품공학과) ;
  • 이지현 (호서대학교 식품영양학과) ;
  • 정혜경 (호서대학교 식품영양학과)
  • Published : 2005.01.01
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Abstract

The study analyzed the lipid patterns and fatty acid compositions of serum and liver tissues in groups of Sparague-Dawley rats. Some of the groups were fed with an basal diet, which contained com oil (C), grape seed oil (GSO), or perilla oil (P), and the others were fed with a high fat diet, which had cholesterol (1%) and lard (10%) mixed with corn oil (CHF), grape seed oil (GSHF), or perilla oil (PHF). The amount of dietary intake was higher for the basal diet groups than the high fat diet groups. And diet efficiency was significantly low in the group of rats fed with the basal diet mixed with perilla oil. From the analysis of the serum lipid patterns, a significant decrease in total lipid concentration was observed in the group of rats fed on the basal diet mixed with perilla oil and the high fat diet group. The levels of triglyceride and phospholipid were significantly low in the basal diet group when perilla oil or grape seed oil was involved. The ordinary diet groups showed significantly higher in HDL-C than the high fat diet groups. There was no significant difference among the basal diet groups, whether the diet was mixed with grape seed oil, perilla oil, or com oil. However, a significant increase in HDL-C was observed in the group of rats fed with the high fat diet containing perilla oil. For LDL-C, there was a significant difference between the high fat diet groups and the basal diet groups. LDL-C was especially low in the group of rats fed with the high fat diet to which perilla oil was added, and the grape seed-added high fat diet group showed a decreasing tendency in LDL-C. The content of total fat, total cholesterol, and triglyceride was the lowest in the group of rats fed with the perilla oil-containing basal diet, and this group was followed in order by the grape seed oil-containing diet group and com oil-containing diet group. In the analysis of the fatty-acid composition in liver tissue, the high fat diet groups showed an increase in saturated fatty acids and polyunsaturated fatty acids, but a decrease in mono unsaturated fatty acids when compared to the basal diet groups. The composition ratio of fatty acids varied according to which type of oil the diet contains. Our finding suggest that grape seed oil was an apparent diet effect on the fatty-acid composition.

포도씨유의 생체 내 지질대사에 미치는 효과를 평가하고자 식이급원이 상이한 들깨유 및 옥수수유를 흰쥐에게 급여하여 체내 지질패턴 및 간조직의 지방산 조성을 분석한 결과는 다음과 같다. 일반식이군과 고지방 식이를 급여받은 쥐의 체중은 7주까지 꾸준히 증가하였다. 그러나 일반식이에 들깨유을 급여받은 쥐는 7주 후 체중이 감소하였고 다른 유지군을 급여받은 군들은 8주째부터 감소하였다. 식이섭취량 은 고지방 식이군 보다 일반식이군이 높았고 식이효율은 일반식이에 들깨유을 혼합하여 급여한 군에서 유의적으로 낮았다. 혈청 지질패턴 분석결과, 총지질 농도는 들깨유을 혼합한 일반식이군과 고지방 식이군에서 유의적으로 감소하였고 중성지방과 인지질 농도는 일반식이군에게 들깨유 급여시 유의적으로 낮았다. HDL-C은 일반식이군이 고지방 식이군보다 유의적으로 높게 나타났으나 일반식이군에 포도씨, 들깨유 및 옥수수유을 혼합하여 급여한 군간에 유의적인 차이는 없었던 반면 고지방 식이군와 들깨유을 급여한 군에서 HDL-C이 유의적으로 증가하였다. LDL-C은고지방식이군과 일반식이군간에 유의적인 차이가 나타났는데, 특히 고지방식이에 들깨유을 급여한 군에서 유의적으로 낮았고 포도씨유 급여군도 감소하는 경향이었다. HDL-ChDL-C 수치가 고지방식이 군에서 다른 식이지방에 비하여 PHF군에서 유의적으로 높았던 것은 혈중 지질패턴을유익하게 바꾸어준 결과이며, 이로 인하여 동맥경화인자인Al 지수가 CHF군에 비해 PHF군과 GSHF군에서 유의적으로 감소되었다. 간조직의 총지방, 총콜레스테를 및 중성지방 함량은 일반식이군은 들깨유군에서 가장 낮았고 그다음이 포도씨유군 및 옥수수유군 순으로 관찰되었다. 간조직의지방산 조성 분석결과 고지방식이군은 포화지방산은 감소하였고 단일불포화 지방산과 다가불포화 지방산은 일반식이군에 비해 증가하였다. 따라서 본 연구결과 유지 급원에 따라함유하는 지방산 조성의 비율도 달라져 식이 급원에 의해 생체내 지방산 조성에 큰 영향을 미치는 것으로 생각된다.

Keywords

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