Effects of Aged Deodeok Extract on Serum Lipid Content in Rats Fed a High-Fat Diet

고지방식이를 섭취한 흰쥐에서 숙성더덕추출물이 혈청지질농도개선 효과에 미치는 영향

  • Park, Sung-Jin (Dept. of Tourism Food Service Cuisine, Hallym College) ;
  • Park, Dong-Sik (Funtional Food & Nutrition Division, Rural Development Administration) ;
  • Yoon, Won-Byung (Dept. of Food Science and Biotechnology, School of Biotechnology, Kangwon National University) ;
  • He, Xinlong (Dept. of Biomaterials Engineering, College of Bioscience and Biotechnology, Kangwon National University) ;
  • Ahn, Ju-Hee (Dept. of Biomaterials Engineering, College of Bioscience and Biotechnology, Kangwon National University)
  • 박성진 (한림성심대학 관광외식조리과) ;
  • 박동식 (농촌진흥청 기능성식품과) ;
  • 윤원병 (강원대학교 BT특성화학부대학 식품생명공학과) ;
  • 허신용 (강원대학교 BT특성화학부대학 생물소재공학과) ;
  • 안주희 (강원대학교 BT특성화학부대학 생물소재공학과)
  • Received : 2011.07.26
  • Accepted : 2012.02.24
  • Published : 2012.02.29

Abstract

This research was performed to investigate the effect of aged Deodeok (Codonopsis lanceolata) water extracts on the levels of lipids in the serum of rats fed a high-fat diet for 10 weeks. Experimental groups were divided into basal diet only (BDG), high fat diet control (HFDCG), high-fat diet and 10% aged deodeok extract powder (HF10S), and high-fat diet and 20% aged deodeok extract powder (HF20S) groups. The levels of hematological variables were not significantly different among the four groups. Compared with the control group's serum total cholesterol level of $339.38{\pm}4.06mg/dL$, the levels of the HF10S and HF20S groups were significantly lowered to $225.38{\pm}5.44$ and $215.02{\pm}4.77mg/dL$, respectively. Compared with the control group's LDL-cholesterol leve of $64.91{\pm}3.67mg/dL$, the LDL-cholesterol levels of the HF10S and HF20S groups were significantly lowered to $54.16{\pm}3.46$ and $46.14{\pm}1.79mg/dL$, respectively. Also, compared to the control group's serum triglyceride level of $103.07{\pm}13.2mg/dL$, the level of the HF20S group was significantly lowered to $48.25{\pm}11.52mg/dL$. These results suggested that dietary supplementation of aged deodeok extract does not have any adverse effect on the hematological variables, while improving the lipid content and reducing hepatic damage of the high-fat fed rats.

고지방식이로 비만 및 고지혈이 유발된 실험동물에서 체중, 혈중지질, 혈청생화학적 검사 및 장기 무게를 측정하여 숙성더덕추출물 투여로 인한 혈중지질 개선 및 숙성더덕추출물의 간기능 및 장기 무게 변화에 미치는 영향에 대해 조사하였다. 체중 및 사료 이용 효율은 고지방식이에 의해 고지방군에서 증가 현상을 보였으며, 숙성더덕추출물 투여군인 HF10S과 HF20S군에서 숙성더덕추출물 투여로 인한 체중증가량 감소와 식이효율 감소 현상을 보였다. 혈청 생화학적 검사에서 고지방식이에 의해 혈중 ALT, AST, 총단백의 변화가 관찰되었으며, 숙성더덕추출물 투여에 의해 기본식이군과 비슷한 수준으로 유지되는 것을 볼 수 있었다. 혈중 creatinine과 g-GT의 경우 고지방식이 및 숙성더덕추출물 투여에 의한 변화는 관찰되지 않았다. 혈중지질 변화는 총 콜레스테롤, LDL-콜레스테롤, triglyceride, 동맥경화지수(AI) 모두 고지방식이에 의해 유의적인 증가 현상을 보였으며, 숙성 더덕추출물 투여로 인한 혈중지질 변화를 관찰할 수 있었다. 10% 숙성더덕추출물 투여인 HF10S군에서 고지방군과 비교하여 총콜레스테롤과 동맥경화지수를 유의한 수준으로 떨어졌으며, 20% 숙성더덕추출물 투여인 HF20S군에서는 총콜레스테롤, LDL-콜레스테롤, triglyceride, 동맥경화지수 모두 유의적으로 기본식이군에 가까운 수준으로 유지되었다. 따라서, 숙성더덕추출물 투여에 의한 총콜레스테롤, LDL-콜레스테롤, triglyceride, 동맥경화지수 모두 고지방군과 비교하여 유의한 수준으로 개선되어 숙성더덕추출물 투여가 혈중지질 개선에 효과를 기대할 수 있을 것으로 사료된다.

Keywords

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