The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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The Effect of Portulaca oleracea on the Pathogens of Gastroenteritis in Infants

쇠비름 추출물이 신생아 장염 유발 미생물에 미치는 영향

  • Bae, Ji-Hyun (Dept. of Food Science and Nutrition, Keimyung University)
  • 배지현 (계명대학교 식품영양학과)
  • Received : 2012.03.20
  • Accepted : 2012.05.01
  • Published : 2012.06.30
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Abstract

Diarrheal diseases constitute one of the major causes of morbidity and mortality in infants and young children globally. One of the main microorganisms causing diarrheal diseases is Campylobacter jejuni. For treatment of these diseases, Portulaca oleracea has been widely used as a folk remedy for a long time. This study was performed to investigate the antimicrobial activity of P. oleracea against gastroenteritis pathogens including C. jejuni. P. oleracea was extracted with petroleum ether, chloroform, ethylacetate, methanol, and hot water. The antimicrobial activity of the P. oleracea extracts was determined using the paper disc method, minimum inhibitory concentration, and the liquid culture method. The 10 $mg/m{\ell}$ ethylacetate extract showed the strongest antimicrobial activity against Salmonella typhimurium, Salmonella enteriditis, and Shigella spp.. The hot water extract from P. oleracea showed the highest anti-microbial activity against C. jejuni at 10~20 $mg/m{\ell}$. The hot water extract of P. oleracea retarded the growth of C. jejuni for 36 hr at $42^{\circ}C$.

본 연구에서는 신생아 질환과 사망 원인 중 첫 번째에 해당하는 설사의 주된 원인균인 C. jejuni와 기타 장내 염증 유발 유해 세균에 대한 쇠비름 추출물의 항균력을 검증하였다. 과거부터 민간이나 한방에서 널리 사용되어져 온 쇠비름은 각종 항균 효과나 항염증, 항암 효과 등이 있는 것으로 알려져 있다. 쇠비름을 각종 유기용매와 열수로 추출하여 Salmonella typhimirium, Salmonella enteriditis, Shigella dysenteriae, Shigella flexneri, Shigella sonnei 및 C. jejuni에 대한 항균활성을 조사해 본 바, 쇠비름의 ethylacetate 추출물 및 열수 추출물이 이들에 대한 항균력을 나타내었다. 쇠비름의 ethylacetate 추출물이 10 $mg/m{\ell}$ 농도에서 Salmonella typhimurium에 대해 가장 높은 항균력을 나타내었고, 열수 추출물도 유사한 항균성을 나타내었다. C. jejuni에 대한 쇠비름 열수 추출물의 MIC 범위는 10~20 $mg/m{\ell}$였으며, $MIC_{50}$은 10 $mg/m{\ell}$, $MIC_{90}$은 20 $mg/m{\ell}$이었다. 쇠비름 열수 추출물은 10 $mg/m{\ell}$ 이상의 농도에서 C. jejuni에 대한 강한 항균력을 나타내 보였다. 또한 액체 배지에 배양한 C. jejuni에 대해 쇠비름의 열수 추출물이 10~20 $mg/m{\ell}$ 농도에서 36시간까지 성장 억제 효과를 보였다.

Keywords

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