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Physiological activities of Lespedeza cuneata extracts

야관문 추출물의 생리 활성

  • Park, Hye-Mi (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Hong, Joo-Heon (Department of Food Science and Technology, Catholic University of Daegu)
  • 박혜미 (대구가톨릭대학교 식품공학전공) ;
  • 홍주헌 (대구가톨릭대학교 식품공학전공)
  • Received : 2014.08.26
  • Accepted : 2014.11.03
  • Published : 2014.12.30

Abstract

This study was conducted to examine the physiological activities of Lespedeza cundata extracts. The extraction yield of 50% ethanol extract (17.60%) was higher than that of hot water extract (12.60%). The total phenolic and total flavonoid contents of the 50% ethanol extract were 242.26 mg/g and 160.73 mg/g, respectively. The DPPH radical scavenging activities of the hot water and 50% ethanol extracts were 92.07% and 96.38%, respectively. The superoxide radical scavenging activities of hot water and 50% ethanol extracts on $250{\sim}1,000{\mu}g/mL$ were 54.89~85.68% and 44.50~94.46%, respectively. The tyrosinase inhibition activity of the 50% ethanol extract at $1,000{\mu}g/mL$ (63.31%) was the highest. The nitrite scavenging activity of the 50% ethanol extract was higher than that of the hot water extract. The nitric oxide production of 50% ethanol extract ($7.15{\sim}20.61{\mu}M$) improved with an increase in the treatment concentration. The hot water and 50% ethanol extracts at $1,000{\mu}g/mL$ inhibited the proliferation of the cancer cell lines A549, HeLa, Hep3B, and Sarcoma180. There results suggest that the 50% ethanol Lespedeza cuneata extracts may be useful as a functional food material in the food industry.

본 연구에서는 유용성분을 함유하고 있는 야관문을 기능성 소재로 활용하고자 열수 및 50% 에탄올을 사용하여 추출물을 제조한 후 야관문 추출물의 생리 활성을 조사하였다. 추출수율은 50% 에탄올 추출물에서 17.60%로 열수추출물 12.60%보다 높은 수율을 나타내었다. 총 페놀 및 플라보노이드 함량은 50% 에탄올 추출물에서 각각 242.26 mg/g 및 160.73 mg/g으로 높은 함량을 나타내었다. DPPH radical 소거활성은 열수추출물에서 92.07% 및 50% 에탄올 추출물에서 96.38%로 나타나 50% 에탄올 추출조건의 항산화 활성이 높았다. Superoxide radical 소거활성 및 tyrosinase 저해활성은 50% 에탄올 추출물 $1,000{\mu}g/mL$에서 각각 94.46% 및 63.31%로 높은 활성을 나타내었다. 아질산염 소거활성은 50% 에탄올 추출시 높게 나타났으며, pH에 따라 산성에 가까울수록 아질산염 소거활성이 높게 나타났다. Nitric oxide 생성량은 50% 에탄올 추출 $250{\sim}1,000{\mu}g/mL$에서 $7.15{\sim}20.61{\mu}M$로 유의적으로 높은 활성을 나타내었으며 시료 농도에 따라 농도 의존적으로 증가하였다. 인간 폐암세포주(A549), 인간 자궁경부암 세포주(HeLa), 인간 간암세포주(Hep3B) 및 마우스 복수암 세포주(sarcoma180)에 대한 암세포 생육 저해활성을 측정한 결과, 열수 추출물 및 50% 에탄올 추출물 모두 암세포생육 저해활성을 보여주었으며, 특히 HeLa에서 상대적으로 높은 항암활성을 나타내었다. 따라서, 야관문 50% 에탄올 추출물은 향후 기능성 식품 소재 개발에 있어 산업적으로 활용 가능할 것으로 기대된다.

Keywords

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