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Physiological activities of Agrimonia pilosa extract

짚신나물(Agrimonia pilosa) 추출물의 생리활성

  • Kim, Hyun-Soo (Department of Food Science and Technology, Jungwon University)
  • 김현수 (중원대학교 식품공학과)
  • Received : 2015.01.22
  • Accepted : 2015.03.11
  • Published : 2015.04.30

Abstract

In this study, we investigated the applicability of functional materials by examining various physiological activities with an extract from the Agrimonia pilosa root. The A. pilosa extract showed low cytotoxicity against murine melanoma B16F10 cells. With little or no cytotoxicity at various concentrations, the A. pilosa extract showed high levels of DPPH radical scavenging activity ($ID_{50}$, 20.70 mg/L) and anti-microbial activity against Bacillus subtilis, Escherichia coli, and Candida albicans. In particular, it had a high level of anti-microbial activities against Gram-positive bacteria. These results suggest that the A. pilosa extract can be used as a natural preservative. It also showed inhibition of tyrosinase activity ($ID_{50}$, 90.18 mg/L), as does kojic acid ($ID_{50}$, 89.13 mg/L), and especially, a higher decrease in melanin content ($ID_{50}$, 62.5 mg/L) than the arbutin level ($ID_{50}$, 100.7 mg/L) as a positive control. These findings suggest that the A. pilosa extract inhibits melanin synthesis by suppressing the intracellular tyrosinase expression. These results indicate that the A. pilosa extract may be an effective material for functional cosmetics, such as skin whitening materials.

본 연구에서 짚신나물(A. pilosa)의 뿌리부분에 대한 다양한 생리활성을 조사하여 기능성소재 응용가능성을 검토하였다. 짚신나물 뿌리 추출물은 멜라노마 세포에 대하여 낮은 세포독성을 나타냈다. 세포독성이 거의 없는 농도에서 짚신나물 뿌리 추출물 처리 시 항산화($ID_{50}$, 20.70 mg/L) 및 항균활성이 매우 우수하게 나타났으며 특히 그람양성세균에 대한 항균활성이 높았다. 또한, 짚신나물 뿌리 추출물 처리시 높은 tyrosinase 활성저해($ID_{50}$, 90.18 mg/L) 및 멜라닌 함량 저하를 보여주었다. 이는 짚신나물 추출물이 세포내 tyrosinase 발현을 억제시킴으로서 멜라닌 합성을 저해하는 것으로 판단된다. 이와 같은 결과로 미루어 볼 때 짚신나무 뿌리 추출물은 피부미백 소재 등 피부개선 효과를 비롯한 기능성 화장품에 활용하기 위한 매우 효과적인 재료가 될 수 있다고 판단된다.

Keywords

References

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