Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Biological Activities of Ethanol Extracts from Monascus-Fermented Chinese Yam

발효 홍국마 에탄올 추출물의 생리활성 효과

  • Received : 2011.05.04
  • Accepted : 2011.06.27
  • Published : 2011.08.30
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Abstract

This study was conducted to investigate antioxidative and physiological activities of ethanol extracts concentration from Monascus-Fermented Chinese Yam (MFCY). The ethanol extracts from MFCY were measured to examine pigment, monacolin K content, total polyphenol content, DPPH radical scavenging activity and angiotensin converting enzyme inhibitory effects. In this study, the results show that Monascus sp. MK2, with Dioscorea batatas Dence. as the substrate, can produce pigments (red, orange, and yellow), monacolin K content, total polyphenol content and DPPH radical scavenging activity at 13.48 (red), 11.66 (orange), 12.77 (yellow), 462.78 (mg/kg), 658.8 (mg/kg) and 92.8% in EtOH extract, respectively. In addition, ACE inhibitory activity was shown to be 74.55% in EtOH extract. Therefore, it can be concluded that Dioscorea batatas Dence is the best fermentative substrate for Monascus species to produce secondary metabolites as biomedicinal substances.

본 실험에서는 발효 홍국마를 기능성식품 소재로의 활용 가능성을 알아보기 위하여 발효 홍국마 분말을 에탄올 용매로 하여 농도별로 추출하고 색소 함량, monacolin K 함량, 총 폴리페놀 함량, DPPH radical 소거활성 및 ACE 저해활성 등을 측정하여 생리활성 효과와 더불어 에탄올을 추출용매로 한 최적의 추출조건을 확립하고자 하였다. 그 결과, 에탄올 농도에 따른 천연색소의 추출량은 에탄올 농도가 50% 일 때 red, orange 및 yellow 색소는 각각 13.48, 11.66 및 12.77 units으로 가장 높게 나타났으며, monacolin K 함량은 에탄올 농도가 75% 일 때 462.78 mg/kg으로 가장 높게 나타났다. 또한, 총 폴리페놀 함량과 DPPH radical 소거활성은 에탄올 농도가 50%일 때 각각 655.63 mg/kg 및 92.8%로 가장 높게 나타났으며, ACE 저해활성의 경우 에탄올 농도 95% 일 때 74.55%로서 가장 높게 나타났다. 이상의 결과를 종합하였을 때 사용목적에 따라서 에탄올 농도를 50% 이상으로 하여 추출하는 것이 각각의 생리활성 효과를 증대 시키는데 있어서 좋을 것으로 사료되며, 특정 생리활성 물질의 생산증대를 위한 방안으로서 발효조건의 최적화를 통하여 수율 증대를 하고자 추가 실험을 진행하고 있다.

Keywords

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