Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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α-Glucosidase Inhibitory Effects for Solvent Fractions from Methanol Extracts of Sargassum fulvellum and Its Antioxidant and Alcohol-Metabolizing Activities

참모자반 메탄올 추출 분획물의 항산화 및 숙취해소능과 α-glucosidase 활성저해효과

  • Kang, Su Hee (Department of Food and Nutrition, College of Medical Life Sciences, Silla University) ;
  • Cho, Eun Kyung (Department of Food and Nutrition, College of Medical Life Sciences, Silla University) ;
  • Choi, Young Ju (Department of Food and Nutrition, College of Medical Life Sciences, Silla University)
  • 강수희 (신라대학교 의생명과학대학 식품영양학과) ;
  • 조은경 (신라대학교 의생명과학대학 식품영양학과) ;
  • 최영주 (신라대학교 의생명과학대학 식품영양학과)
  • Received : 2012.09.20
  • Accepted : 2012.10.24
  • Published : 2012.10.30
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Abstract

We investigated the physiological activity and solvent-partitioned fractions of methanol extracts from the green seaweed Sargassum fulvellum. The methanol extract from S. fulvellum was sequentially fractionated with n-hexane (SFMH), methanol (SFMM), buthanol (SFMB), and water (SFMA). We investigated the antioxidant activities of solvent fractions from S. fulvellum by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging capacity and an SOD activity assay. DPPH radical scavenging capacity of SFMM was 79.5% at 10 mg/ml. SOD activity of SFMM was 79.9% at 10 mg/ml. Nitrite scavenging activities of solvent fractions from S. fulvellum were investigated under different pH conditions and showed the most remarkable effect at pH 1.2. In particular, the activity of SFMB was higher than the other fractions. ADH activity and ALDH activity of SFMM were 177.0% and 167.4% at 10 mg/ml, respectively. ${\alpha}$-Glucosidase inhibitory activity of SFMH increased in a dose-dependent manner and was about 94.1% at 2 mg/ml. Elastase inhibitory activity was 93.2% at 2 mg/ml. These results revealed that S. fulvellum extracts have strong antioxidant and alcohol dehydrogenase activities and ${\alpha}$-glucosidase inhibitory activity, suggesting that S. fulvellum extracts have potential as a source of natural products for health and beauty.

참모자반 분획물은 극성에 따라 핵산, 메탄올, 부탄올 및 수층 순으로 분획하여 4개의 분획층을 얻었으며, 각 분획층의 생리활성을 요약하면 다음과 같다. 항산화 활성은 DPPH radical 소거능과 SOD 활성을 측정한 결과 모두 농도 의존적으로 증가하였으며 특히 메탄올 분획 층에서 가장 높은 항산화 효과를 보였다. 아질산염 소거능 실험에서는 부탄올 층이 pH 1.2에서 57.8%로 4개의 분획물중 가장 높은 아질산염 소거능을 나타냈다. 숙취 해소능을 측정하기 위하여 ADH 활성과 ALDH 활성을 측정하였다. 대조구로 사용한 흡광도 값을 100으로 하였을 때 positive control로 사용한 hepos가 150~167%의 활성을 나타내었으며 4가지 분획층 모두 농도 의존적으로 활성이 증가하였다. 특히 ALDH에서는 메탄올 분획층이 10 mg/ml 농도에서 167.4%의 활성을 나타내어 hepos와 비슷한 효과를 보였다. 참모자반 분획물의 혈당강하 효과는 ${\alpha}$-glucosidase 활성억제 효과로 측정하였다. ${\alpha}$-glucosidase 활성억제 효과는 핵산 분획층에서 2 mg/ml의 농도에서 94.1%로 아주 높은 항당뇨 효과를 나타내었다. 그런데 부탄올층, 메탄올층 및 수층은 혈당강하효과가 거의 없는 것으로 나타났다. 피부주름예방을 측정하기 위하여 수행한 elastase 저해효과 실험에서 메탄올 분획층에서 농도 의존적으로 높은 주름개선효과가 나타났으며 2 mg/ml 농도에서 93.2%의 효과를 나타냈으며, positive control로 사용한 Vit. C (1 mg/ml) 보다 더 높은 활성을 나타냈다. 이러한 결과는 모자반 메탄올 추출물 중 특히 메탄올 분획층이 탁월한 주름개선 효과, 숙취 해소능과 항산화 효과가 있는 것으로 사료되며, 핵산층은 혈당강하 효과가 높은 것으로 나타났다. 따라서 모자반 유기용매 분획물은 천연 기능성소재로서의 사용 가능성이 매우 높을 것으로 사료된다.

Keywords

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