Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Effect of Insoluble Dietary Fiber Extracted from Salicornia herbacea L. on Large Intestinal Function in Rats

불용성 함초 식이섬유의 섭취가 흰쥐 장기능에 미치는 효과

  • Kim, Soo-Hwan (Department of Biomedical Laboratory Science, Jungwon University) ;
  • Kim, Sook-Ja (Department of Integrated Biomedical and Life Science, Graduated School, Korea University) ;
  • Lee, Hyeong-Seon (Department of Biomedical Laboratory Science, Inje University)
  • 김수환 (중원대학교 의료보건대학 임상병리학과) ;
  • 김숙자 (고려대학교 일반대학원 의생명융합과학과) ;
  • 이형선 (인제대학교 임상병리학과)
  • Received : 2014.06.16
  • Accepted : 2014.10.08
  • Published : 2014.10.31
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Abstract

This study investigated the effect of insoluble dietary fibers extracted from Salicornia herbacea L. (S. herbacea) on the improvement of intestinal function in rats. Sprague-Dawley rats were fed on diet containing 5% and 10% S. herbacea dietary fiber (SHDF) for four weeks. Rats receiving the SHDF diet showed a significant decrease in their triglyceride levels and an increase in HDL-cholesterol levels. In addition, compared with the control group, the SHDF group showed a significant increase in the total quantity of the feces and its moisture content. The intestinal transit time of the feces was also shorter in this group. The pH of the feces decreased in all the other experimental groups. Particularly, the bile acid content of the feces and the thicknesses of the mucus layers showed significant recovery on SHDF intake. These results suggest that dietary fiber isolated from S. herbacea has a marked effect on the improvement of bowel function in rats with loperamide (2 mg/kg)-induced constipation.

본 실험에서는 함초에 포함 되어 있는 불용성 식이섬유를 추출 분리 하여 변비가 유발된 흰쥐에서의 다양한 장 기능 개선 효과에 대하여 알아보았다. 실험은 Sprague-Dawley계 수컷 흰쥐를 사용하였으며 Normal군, Control군, 5% ${\alpha}$-cellulose군, SHDF 5%, SHDF 10%군으로 나누었다. AIN-93 기본식이에 다른 식이섬유를 첨가하여 4주 동안 식이하여 혈청 중 지질 성분의 생화학적 분석, 대변량과 수분 함유량의 변화, 장 통과시간 측정, 분변 중 pH와 담즙산 측정, 대장의 병리조직학적 관찰 등을 통해 결과를 얻었다. 혈중 triglyceride 함량은 Control군에 비해 SHDF 10%군이 유의성 있는 감소를 보여 주었고 심지어, 5% ${\alpha}$-cellulose군과 비교하여 효과적인 감소를 보여주었다. HDL-cholesterol의 함량은 Control군에 비해서 모든 군에서 모두 유의성 있는 증가를 보여 주었다. 채집한 분변의 wet weight와 dry weight는 모두 Control군에 비해 유의성 있는 증가를 보였으며, 배출된 대변에서의 수분양이 유의성 있게 증가하였다. 분변의 장 통과시간이 Control군에 비해 유의적으로 단축되는 것으로 나타났다. 분변의 pH는 Control군에 비해 함초의 식이에 의해 유의성 있는 감소를 모였으며, 담즙산은 유의성 있게 증가했다. 조직의 염색상을 통해 장샘의 길이와 전체적인 형태를 확인한 결과 Control군에 비하여 함초식이군에서 조직의 손상이 회복되는 것을 관찰할 수 있었다. 이러한 결과로 미루어 볼 때, 함초의 불용성 식이섬유는 혈중 triglyceride의 감소와 HDL-cholesterol을 증가시키고, 대변량을 증가시키고 장 통과시간을 단축하여 손상된 장관내 환경을 개선시킴으로써, 장점막층의 빠른 회복을 통하여 변비 등과 같은 장기능 저하에 탁월한 효과를 가질 것으로 생각된다.

Keywords

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