Effects of Mugwort, Onion and Polygalae Radix on the Intestinal Environment of Rats

쑥, 양파 및 원지가 흰쥐의 장내환경에 미치는 영향

  • Lee, Seon-Hwa (Department of Food Technology, Korea University) ;
  • Woo, Sun-Ja (Department of Food Technology, Korea University) ;
  • Koo, Young-Jo (Food Biotechnology Division, Korea Food Research Institute) ;
  • Shin, Hyun-Kyung (Department of Food Science and Nutrition, Hallym University)
  • 이선화 (고려대학교 식품공학과) ;
  • 우순자 (고려대학교 식품공학과) ;
  • 구영조 (한국식품개발연구원 생물공학부) ;
  • 신현경 (한림대학교 식품영양학과)
  • Published : 1995.08.31

Abstract

The contents in large intestine of Sprague Dawley rats fed polygalae radix(Polygala tennuifolia), onion(Allium cepa) and mugwort(Artemisia asiatica)-supplemented diets for 14 days were analysed for changes of major intestinal microflora, activities of ${\beta}-glucosidase\;and\;{\beta}-glucuronidase$ and amounts of putrefactive products such as indole and volatile basic nitrogen. The rats having ingested $5%{\sim}10%$ mugwort water or ethanol extract-supplemented diets showed a significant increase in intestinal bifido-bacteria and a decrease in clostridia and E. coli (p<0.05). And 10% onion juice group also showed a similar beneficial microflora change. In 5% mugwort powder-supplemented group, ${\beta}-glucosidase\;and\;{\beta}-glucuronidase$ activities in the intestinal contents were lowered, but the changes were not significant. Indole contents and pH in this group were significantly low compared with that of control (p<0.05). However, the activities of ${\beta}-glucosidase$ in 5% polygalae radix water extract and 10% onion juice-supplemented group and ${\beta}-glucuronidase\;in\;5%{\sim}10%$ mugwort water and ethanol extract-supplemented group were significantly higher than those of control (p<0.05). The intestinal indole contents of rats were significantly increased by feeding diet with water extract of polygalae radix and ethanol extract of mugwort which had brought comparatively large amount of protein in intestine (p<0.05). However, polygalae radix, onion, and mugwort-supplemented group had no effect on volatile basic nitrogen.

원지, 양파 및 쑥을 추출물, 즙 또는 분말로 하여 기준식이에 5 및 10% 첨가하여 흰쥐에게 14일간 먹여 대장내용물에서 주요균의 변화와 ${\beta}-glucosidase$${\beta}-glucuronidase$의 효소활성 및 인돌과 volatile basic nitrogen의 생성량을 조사하였다. 실험쥐들의 사료섭취량과 체중증가량은 쑥의 물추출물 5% 섭취구를 비롯하여 시료 첨가구들에서 대체로 높았으나, 원지물추출물 5%와 쑥의 에탄올추출물 10% 섭취구에서는 체중이 감소하였다. 쑥의 물 또는 에탄올추출물 첨가구에서 유익균인 bifidobacteria가 대조구에 비해 높았고, clostridia와 E. coli는 낮았다(p<0.05). 그외 양파즙 10% 첨가구에서도 유익균의 증가와 유해균의 감소와 같은 유리한 균총변화를 보였다. 한편 쑥분말 5% 첨가구에서 대장내용물중 ${\beta}-glucosidase$${\beta}-glucuronidase$ 활성은 대조구와 비교해 통계적인 유의성이 없으나, 인돌함랑과 pH는 대조구에 비해 낮았다(p<0.05). 그러나 원지물추출물과 양파를 10% 첨가구에서는 ${\beta}-glucosidase$ 활성이, 쑥추출물들의 첨가구에서는 ${\beta}-glucuronidase$ 활성이 높았다(p<0.05). 인돌함량은 단백질 함량이 높은 원지물추출물과 쑥에탄올추출물 첨가구에서 높았다(p<0.05). 한편 휘발성 염기태 질소화합물의 함량은 처리구들에서 유의적인 차이가 없었다.

Keywords