Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Studies on Physiological and Functional Properties of Methanol Extract from Chicken Bile

닭 쓸개 methanol 추출물의 생리기능적 특성에 관한 연구

  • Published : 2004.08.31
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Abstract

Methanol extracts and powder of chicken bile were evaluated to determine antimicrobial, electron-donating, nitrite-scavenging, and inhibitory abilities against angiotensin I-converting enzyme (ACE). HPLC revealed taurochonodeoxycholic acid (TCDOA) and taurocholic acid (TCA) were major bile salts, at 5,893 and 395 mg/100g, respectively. Methanol extracts showed inhibitory effect on growth of Bacillus cereus, Salmonella typhimurium, Staphylococcus aureus, and Vibrio parahaemolyticus, whereas no effect on Escherichia coli. Electrondonating and nitrite-scavenging abilities increased significantly with increasing amount of bile samples. Electrondonating activity of dried powder was higher than that of methanol extracts, whereas nitrite-scavenging activity showed opposite trend. Both samples showed positive inhibitory activity of ACE. Methanol extracts showed higher activity than that of freeze-dried powder at high level of bile sample (5 and 10%).

닭 쓸개의 생리기능적 특성을 연구하기 위하여 TLC 및 HPLC를 이용하여 쓸개내 성분을 정성 및 정량 분석을 하였고, 항균활성, 전자공여능, 아질산염 소거능 및 ACE 저해능을 비교 검토하였다. TLC 및 HPLC에 의해서 분석한 결과 닭 쓸개의 담즙산 중에는 taurochenodeoxycholic acid와 taurocholic acid로 추정되는 성분이 검출되었으며, 이들의 함량은 taurochenodeoxycholic acid 가 5,893mg/100g, taurocholic acid는 385mg/100g이었다. 이들 추출물은 Bacillus cereus에 대하여 강한 항균활성을 보였으며 Salmonella typhimurium, Staphylococcus acreus 및 Vibrio parahaemolyticus에 대해서도 항균 활성을 나타내었다. 그러나 Escherichia coli에 대해서는 항균활성을 보이지 않았다. 쓸개의 냉동 건조물 및 methanol 추출물의 전자공여능은 시료의 농도가 증가할수록 유의적으로 증가하였다. 또한 pH 1,2에서 측정한 아질산염 소거작용에 있어서도 농도가 높을수록 유의적으로 증가하였으며, methanol 추출물이 냉동 건조물 보다 높게 나타났다. Angiotensin I-converting enzyme(ACE) 저해 작용에서도 methanol 추출물과 냉동건조물 모두에서 나타났으며, 첨가량을 증가시켰을 때 methanol 추출물의 작용이 냉동건조물의 경우보다 상승폭이 큰 것으로 확인되었다. 이상의 결과로부터 닭 쓸개는 항균활성, 전자공여능 및 아질산염 소거능 그리고 ACE 저해능 등의 다양한 생리기능적 특성을 지니고 있어 기능성 식품 등의 소재로서의 활용을 기대할 수 있을 것으로 사료된다.

Keywords

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