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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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The Effect of Insoluble Dietary Fiber Extracted from Chinese Cabbage Waste on Plasma Lipid Profiles in Rats Fed a High Fat Diet

배추 폐기물로부터 분리한 불용성 식이섬유가 고지방 식이를 급여한 쥐의 혈중 지질농도에 미치는 영향

  • Liu, Wenli (Dept. of Food Engineering, Mokpo National University) ;
  • Ko, Kang-Hee (Solar Salt and Halophyte R&D Center, Mokpo National University) ;
  • Kim, Hag-Ryeol (Solar Salt and Halophyte R&D Center, Mokpo National University) ;
  • Kim, In-Cheol (Dept. of Food Engineering, Mokpo National University)
  • 유문려 (목포대학교 식품공학과) ;
  • 고강희 (목포대학교 천일염 및 염생식물 산업화사업단) ;
  • 김학렬 (목포대학교 천일염 및 염생식물 산업화사업단) ;
  • 김인철 (목포대학교 식품공학과)
  • Received : 2011.05.12
  • Accepted : 2011.12.27
  • Published : 2012.01.31
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Abstract

This study investigated the lipid profiles for the possible improving activity of insoluble dietary fiber extracted from cabbage waste discarded during kimchi manufacture and market distribution. Enzyme-treated Insoluble Dietary Fiber (EIDF) is the remnants of crude dietary fiber (CDF) treated by ${\alpha}$-amylase, protease, and amyloglucosidase after removal of soluble materials from cabbage waste. The insoluble dietary fiber of CDF and EIDF in cabbage waste was $65.33{\pm}0.33%$ and $73.57{\pm}0.09%$, respectively. To examine the effects of EIDF on plasma cholesterol concentration, two group of rats were fed either a high fat diet (HFD) or a HFD containing 0.1~1.0% EIDF for 4 weeks. The body weight of all groups was not significantly different (p<0.05) but the body weight of EIDF+HFD groups was less than that of the HFD group (p<0.1). Compared with the HFD group, EIDF also lowered serum levels of total triglycerides to 11.2~23.3% and cholesterol to 26.8~28.5%. In EIDF+HFD groups, the HDL-cholesterol level increased by 7.2~26.1%, while LDL-cholesterol especially decreased by 51.0~61.4% and VLDL-cholesterol by 16.9~26.4%. The atherogenic index of EIDF+HFD groups was also reduced twice that of the HFD group. From these results, EIDF from cabbage waste could be a potential effective food ingredient for improving lipid profiles.

농산물 유통과정 및 김치 제조과정 중 발생하는 배추 폐기물의 이용성을 확대하기 위해 이로부터 불용성 식이섬유를 분리하고 혈중 콜레스테롤 저하능을 확인하였다. 배추폐기물을 $121^{\circ}C$/15분 조건에서 추출한 다음, 수용성 물질은 제거하고 남은 박에 전분 및 단백질 분해효소를 처리하여 효소처리된 불용성 식이섬유 분말(EIDF)을 제조하였다. 고지혈증 및 동맥경화에 미치는 영향을 알아보기 위해 고지방 식이에 0.1~1%의 EIDF를 첨가하여 이를 흰쥐에 4주 동안 공급하였다. 체중증가량에 대해 p<0.05 수준에서는 유의적인 차이를 확인할 수 없었으나 p<0.1 수준에서는 고지방 식이를 한 경우보다 EIDF를 첨가한 군의 체중이 낮았다. 또한 EIDF는 혈중 중성지방 및 총 콜레스테롤, LDL-콜레스테롤, VLDL-콜레스테롤의 수준을 낮췄으며, HDL-콜레스테롤 함량은 증가시켜 동맥경화지수가 낮은 것으로 확인되었다. 특히 EIDF를 투여함에 따라 LDL-콜레스테롤 함량을 2주째 에 66.7%~72.8%, 4주째에 45.1%~56.5%까지 낮춰 배추 폐기물에서 추출한 불용성 식이섬유의 혈중 콜레스테롤 저하능이 우수한 것을 평가할 수 있었으며, 이를 이용하여 부가 가치가 높은 건강기능보조식품으로의 활용이 기대된다.

Keywords

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