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 High Amylose Starch on Lipid Metabolism and Immune Response in Rats

고아밀로오스전분의 섭취가 흰쥐의 지방대사 및 면역능력에 미치는 영향

  • 설소미 (단국대학교 식품영양학과) ;
  • 방명희 (단국대학교 식품영양학과) ;
  • 최옥숙 (단국대학교 식품영양학과) ;
  • 김우경 (단국대학교 식품영양학과)
  • Published : 2003.04.01
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Abstract

This study was conducted to investigate the effects of high amylose corn starch consumption on plasma, liver and feces lipid profiles and immune responses in male Sprague-Dawley rats. Experimental animals were fed on diets containing the high amylose starch (HAS,0, 125, 250,500 g/kg diet) for 4 weeks. HAS intake did not affect on food intakes and food efficiency ratio. Final body weights were lowered in HA100 group than in control group. HAS intakes dose dependently increased the weights of cecum and excretion of feces per day, and decreased the pH of cecum contents. And HAS intakes significantly decreased the plasma total lipid, triglyceride and total cholesterol levels. But there were not significant differences total lipid, triglyceride and cholesterol concentrations in liver. The absolute and relative weights of thymus and spleen, plasma Is G and $C_3$ concentrations were unaffected by experimental diets. The splenocyte proliferations with low dose Con A (0.1$\mu\textrm{g}$/10 $\mu$L) as lower in HA25 group and HA50 group than in control group. These results demonstrate that high amylose corn starch intakes significantly improve lipid profiles in plasma.

본 연구는 SD계 흰쥐를대상으로 전분을 식이 무게의 50%로 주면서 일반 옥수수전분을 고아밀로오스 옥수수전분으로 대치시 켜 RS양을 증가시켰을 때, 지방대사와 면역능력에 미치는 영향을 살펴보는 것을 목적으로 하였다. 식이섭취량이나 식이 효율에는 유의적인 차이가 없었으나 최종 체중은 대조군에 비해 HA100군에서 감소하는 경향이었다. 맹장무게와 하루 변배설량은 식이내 HAS량이 증가할수록 유의적으로 증가하였다. 맹장내용물의 pH는 식이 내 HAS량이 증가할수록 유의적으로 감소하였다. 혈장 내 총 지방, 중성지방, 총 콜레스테롤량은 HAS섭취가 증가하면 감소하였으나 HDL-콜레스테롤량과 간내 총 지방, 중성 지방, 콜레스테롤량은 HAS섭취에 의한 영향을 받지 않았다. 변을 통한 총 콜레스테롤의 배설량은 HA50군에서 대조군에 비해 유의적으로 증가하였다. 면역 기관인 흉선과 비장의 무게와 혈장의 Ig G와 $C_3$농도는 식이에 의해 영향을 받지 않았다. 비장세포의 증식 능력을 보았을 때 PHA에 의한 자극에는 식이의 영향이 없었으나 저용량의 Con A로 자극하였을 때 HA25, HA50에서 증식이 유의적으로 낮았고, 배양액 내 PGE$_2$의 생산량이 증가하는 경향을 보였다. 이를 종합해보면, HAS의 섭취는 체중감소의 효과가 있는 것으로 보이며, 맹장의 무게를 증가시키고, 맹장 내 pH를 낮추고, 혈액내 지방성분을 감소시키는 것으로 나타났다.

Keywords

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