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Effect of Rudbeckia laciniata Extract on Physiological Activity of HaCaT Cells

삼잎국화 추출물의 피부세포 생리활성 효과

  • Kim, Jun-Sub (Dept. of Biotechnology, Korea National University of Transportation)
  • 김준섭 (한국교통대학교 생명공학과)
  • Received : 2016.05.09
  • Accepted : 2016.06.01
  • Published : 2016.06.30

Abstract

The objective of the present investigation was to obtain vitamin, mineral, flavonoid, and polyphenol profiles of Rudbeckia laciniata (RL), and to examine the effects of extract of RL (RLE) on various physiological activities of HaCaT keratinocyte for the utilization of RL as natural raw materials to develop functional food. To accomplish this purpose, we checked the contents of the general nutrients of RL. The contents of vitamin A, vitamin $B_1$ and vitamin $B_2$ were $7.49{\mu}g/g$, $51.96{\mu}g/g$, and $132{\mu}g/g$ respectively, while vitamin C and vitamin $D_3$ were not detected. The contents of mineral such as Ca, K and Fe were 2.01 mg/g, 6.06 mg/g and 0.03 mg/g respectively. Total flavonoid contents of RLE were 0.25 mg/g, and total polyphenol were estimated as 1.43 mg/g. Because RL contains high levels of vitamin A which is associated with skin aging, we investigated the effect of RLE on physiological function of keratinocytes with respect to skin aging. We found that RLE significantly increased the growth rate of HaCaT cells and reduced ultraviolet radiation B (UVB)-induced cellular toxicity. Also, the extract of Rudbeckia laciniata attenuated the UVB-induced reactive oxygen species (ROS) generation in a dose-dependent manner in HaCaT cells. In addition, treatment with the extract dose-dependently increased migration activity of HaCaT cells. Thus, these findings indicated that RLE could regulate the physiological activity of keratinocytes, and may be used to develop functional foods.

Acknowledgement

Supported by : 한국교통대학교

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