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Antioxidant, Antidiabetic, and Anti-Inflammatory Effects of Extracts and Fractions from Parthenocissus tricuspidata Stems

담쟁이덩굴 추출물과 분획물의 항산화, 항당뇨 및 항염증 효과

  • 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)
  • 조은경 (신라대학교 의생명과학대학 식품영양학과) ;
  • 최영주 (신라대학교 의생명과학대학 식품영양학과)
  • Received : 2013.01.25
  • Accepted : 2013.03.25
  • Published : 2013.03.30

Abstract

This study was carried out to analyze the effects on antioxidative, antidiabetic, and anti-inflammatory activities of Parthenocissus tricuspidata (PT) stem extracts. The total phenolic contents of hot water and ethanol extracts from PT stems were 61.5 mg TAE/g and 122.1 mg TAE/g, respectively. The antioxidative activities of hot water and ethanol extracts from PT stem were measured by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and superoxide dismutase (SOD) assay. The DPPH radical scavenging activities of ethanol extract and butanol fraction were approximately 95% and 92% at 1 mg/ml, respectively, and the SOD activities of ethanol extract and butanol fraction were about 91% and 97% at 1 mg/ml, respectively. The DPPH radical scavenging and SOD activities of ethanol extract and butanol fraction from PT stem increased remarkably increased in a dose-dependent manner and were higher than in the hot water extracts. Compared to the acarbose, a known anti-diabetic drug, which was used as a positive control, the ${\alpha}$-glucosidase inhibitory capacity of PT stem showed a strong inhibitory rate in ethanol extract and in butanol and hexane fractions. We investigated the effect of hot water extract from PT stem on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW 264.7 cells. Hot water extract from PT stem inhibited LPS-induced NO production up to 40% at a treatment of 1 mg/ml. These results suggest that PT stem extracts have an effect on antioxidative, antidiabetic, and anti-inflammatory activities and thus have great potential as antidiabetic materials and a source for natural health products.

본 연구에서는 담쟁이덩굴 추출물이 항산화, 항당뇨 및 항염증 효과에 미치는 영향을 조사하고자 수행하였다. 담쟁이덩굴 열수 및 에탄올 추출물의 총 페놀함량은 각각 61.5 mg TAE/g과 122.1 mg TAE/g으로 에탄올 추출물에서 훨씬 높게 나타났다. 에탄올 추출물과 부탄올 분획물의 DPPH 라디칼 소거활성은 1 mg/ml에서 95%와 92%의 radical 소거능을 나타내어 positive control로 사용한 비타민 C와 유사한 항산화력을 보였다. SOD 활성은 에탄올 추출물과 부탄올 분획물 1 mg/ml 농도에서 91%, 97%로 높은 활성을 나타내었다. DPPH radical 소거능과 SOD 활성을 측정한 결과 항산화 활성은 모두 농도 의존적으로 증가하였으며 특히 열수추출물과 비교할 때 에탄올 추출물과 부탄올 분획물에서 높은 항산화 효과를 보였다. 담쟁이덩굴 추출물의 ${\alpha}$-glucosidase 활성억제 효과는 에탄올 추출물과 핵산 및 부탄올 분획층에서 높은 항당뇨 효과를 나타내었다. 이러한 결과는 지금까지 항당뇨 약물로 사용된 것보다도 높은 것으로 나타났다. LPS에 의하여 유도된 NO 합성은 1 mg/ml 농도의 담쟁이추출물을 처리함으로써 NO 합성이 약 40%로 감소하였다. 이러한 결과들은 담쟁이 추출물의 우수한 항산화, 항당뇨, 항염 효과를 시사하고 있으며 특히, 천연 항당뇨 기능성 소재로서 담쟁이 추출물의 활용 가능성이 높을 것으로 사료된다.

Keywords

References

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