Journal of Nutrition and Health

The Korean Nutrition Society (한국영양학회)
권호 표지

Effects of Late-harvested Green Tea Extract on Lipid Metabolism and Ca Absorption in Rats

하품녹차 열수추출물이 흰쥐의 지질대사 및 칼슘흡수에 미치는 영향

  • 이성현 (농촌진흥청 농촌생활연구소) ;
  • 이연숙 (서울대학교 식품영양학과)
  • Published : 1998.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study was conducted to investigate the effect of late-harvested green tea extract on serum and tissue lipid contents and Ca absorption. Sprague-Dawley male rats weighing 200g were fed high fit diets containing no tea(control), 0.5%(0.5LG), 1.0% late-harvested green tea extract(1.0LG), and 1.0% early-harvested green tea extract(1.0EG) for 4 weeks. Though daily food intake of experimental groups showed no significant difference from that of control group, daily body weight gain and food efficiency ratio were lower in all groups fed green tea extract. The contents of serum triglyceride of 1.0LG and 1.0EG groups and the content of serum total cholesterol of 1.0LG group were significantly lower than those of control group. The values of serum HDL-cholesterol in groups fed green tea extract were higher than that in the control group. LDL-cholesterol and atherogenic indices of all groups fed green tea extract were significantly lower than those of the control group. The contents of total lipid and triglyceride in liver were significantly lower in only 1.0LG group. For epididymal fit pad, the contents of total lipid and triglyceride in 1.0LG and 1.0EG groups were lower than those in the control group. The contents of total lipid excreted in feces were higher in groups fed diets of 1.0% green tea extract. There was no significant difference among experimental groups in Ca absorption. These results suggest that the administration of late-harvested green tea extract decreases the contents of fat in the body without reducing Ca absorption. (Korean J Nutrition 31(6) : 999-1005, 1998)

Keywords

References

  1. Theses collection of Health v.33 no.1 The status and preventive method of cardiovascular disease in Korea Kim,J.S.
  2. Annual Report on the Cause of Death Statistics National Statistical Office
  3. Korean J Nutr v.21 no.2 Effect of Coix on plasma cholesterol and lipid metabolism in rats Park,Y.J.;Lee,Y.S.;Hiramitsu,S.
  4. J Korean Soc Food Nutr v.25 no.3 Effects of pine needle extracts on enzyme activities of serum and liver, and liver morphology in rats fed high fat diet Kang,Y.H.;Park,Y.K.;Ha,T.Y.;Moon,K.D.
  5. British Medical J v.310 Cross sectional study of effects of drinking green tea on cardiovascular and liver diseases Imai,K.;Nakachi,K.
  6. J Nutr Sci Vitaminol v.32 Effects of green tea catechins on plasma cholesterol level in cholesterol-fed rats Muramatsu,K.;Fukuyo,M.;Hara,Y.
  7. Science and culture of teas Kim,J.T.
  8. Bonchogangmok Lee,S.J.
  9. Dauptongsa Geuk,L.
  10. Bonchojongshin Oh,E.L.
  11. Dongeuibogam Huh,J.
  12. J Japanese Soc Food Nutr v.43 no.5 Hypotensive effect of tea catechins on blood pressure of rats Yukihiko Hara;Fumiko Tono-oka
  13. Korean J Food Sci Technol v.25 no.6 Antioxidant effect of aqueous extract obtained from green rea Lee,J.W.;Shin,H.S.
  14. Nature v.214 Effect of coffee and tea on serum lipids in the rats Akinyanju,P.;Yudkin,J.
  15. Food Chemistry Lee,S.L.;Shin,H.S.
  16. Gut v.16 The effect of tea on iron absorption Disler,P.B.;Lynch,S.R.;Charlton,R.W.;Torrance,J.D.;Bothwell,T.H.;Walker,R.B.;Mayet,F.
  17. Korean J Biotechnol Bioeng v.4 no.1 Changes in some compounds by heat treatment of green tea Cho,C.H.;Kim,S.I.;Jo,D.H.
  18. Korean J Soc Food Sci v.11 no.4 Chemical properties on the quality of marketed roasting green teas Shin,M.K.;Chang,M.K.;Seo,E.S.
  19. Am J Clin Patho v.53 The colorimetric method for determination of serum total lipids based on the sulphophosphovanilline reaction Fringe,C.S.;Dunn,R.T.
  20. J Bio Chem v.226 A simple method for the isolation and purification of total lipid from animal tissues Folch,J.;Less,M.;Sloanestanley,G.H.
  21. Anal Biochem v.29 Study of a new cholesterol reagent Zlatkis,A.;Zak,B.
  22. Clinical Chem v.21 A manual colorimetric assay of triglyceride in serum Biggs,H.G.;Erikson,T.A.;Moorehead,W.R.
  23. Korean J Nutr v.28 no.1 Effects of aqueous green tea extracts with α-Tocopherol and lecithin on the lipid metabolism in serum and liver of rats Chung,H.J.;Yoo,Y.S.
  24. Korean J Nutr v.27 no.10 Effects of Korean green tea, oolong tea and black tea beverage on the antioxidative detoxification in rat poisoned with cadmium Yoon,Y.H.;Lee,S.J.
  25. Proceeding Int Symp Tea Sci Effect of green tea on cholesterol metabolism in rats Muramatsu,K.;Sugiyama,K.;Amano,S.;Nakashima,J.;Saeki,S.
  26. Lipids v.27 Effects of polyphenolic natural products on the lipid profiles of rats fed high fat diets Yugarany,T.;Tan,B.K.;Teh,M.;Das,N.P.
  27. J Korean Soc Food Nutr v.21 no.6 Effect of dietary protein levels, caffeine and green tea on body fat deposition in wistar rats Lee,C.H.;Choi,B.K.;Lee,W.C.;Park,C.I.;Yuziro-Furugawa;Shuichi-Kimura
  28. Biol Trace Elem Res v.53 no.13 Black tea, green tea, and tea polyphenols. Effects on trace element status in weanling rats Record,I.R.;Mcinerney,J.K.;Dreosti,I.E.