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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Physiological Activities of Cucurbita moschata Duch. Extracts with Different Extraction Conditions

추출조건에 따른 늙은 호박 추출물의 생리활성

  • Published : 2010.02.27
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Abstract

This study was to investigate physiological activities of Cucurbita moschata Duch. extracts by various extraction conditions. Electron donating ability of 50% ethanol extract was 52.37% at 50 mL/g, which was higher than those of 1.0% and 0.1% L-ascorbate solutions. SOD-like activities were the most effective in all of the samples at 50 mL/g, which were barely detectable. Total polyphenol contents were the highest at 50 mL/g for all fiber extracts. The nitrite scavenging effects were the most effective in pH 1.2 at more than 80%. Tyrosinase-inhibitory activities ranged at fewer than 19%. The results will be useful for understanding of the physiological activities of Cucurbita moschata Duch. extracts.

늙은 호박의 부위를 나누고 추출용매를 증류수, 50% EtOH, 100% EtOH로 달리하여 건물 중량의 25배에 해당되는 부피(w/v)일 때, 추출물의 생리활성 및 항산화 효과를 측정하였다. 추출물의 수율을 측정한 결과 추출용매를 증류수로 사용한 추출물들이 가장 높았으며, 특히 섬유질 추출물이 14.62%로 가장 높게 나타났다. 전자공여 작용의 경우 50% EtOH로 추출한 섬유질 추출물이 52.37%의 높은 전자 공여능을 보였다. SOD 유사활성을 측정한 결과에서는 100% EtOH에 의해 추출된 과육 추출물이 42.48%로 다른 추출물보다 높은 유사활성을 나타냈다. 총 폴리페놀 함량의 경우 50% EtOH로 추출한 섬유질 추출물이 121.49 mg%로 가장 높게 나타났다. 아질산염 소거능 측정 결과에서 모든 추출물이 pH 1.2에서 소거능이 가장 높게 측정되었다. Tyrosinase 활성 저해능의 경우 모든 과육 추출물이 11.36~19.14%로 가장 높게 나타났으나 비교물질인 L-ascorbic acid에 비해 매우 낮은 저해능을 보였다. ACE 저해활성에서도 전자공여능과 페놀함량 측정결과와 같이 50% EtOH로 추출한 섬유질 추출물이 가장 높게 나타났다.

Keywords

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