Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Whitening Effect of Green Tea Seed Shell Ethanol Extracts

녹차씨 껍질 에탄올 추출물의 미백 활성

  • Song, Ha-Yeon (Department of Food Science and Technology, Kongju National University) ;
  • Sung, Nak-Yun (Department of Food Science and Technology, Kongju National University) ;
  • Jung, Pil-Mun (Department of Food Science and Technology, Kongju National University) ;
  • Kang, Min-Soo (Department of Food Science and Technology, Kongju National University) ;
  • Park, Won-Jong (Department of Food Science and Technology, Kongju National University) ;
  • Byun, Eui-Hong (Department of Food Science and Technology, Kongju National University)
  • Received : 2015.06.15
  • Accepted : 2015.07.15
  • Published : 2015.10.31
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Abstract

The objective of this study was to evaluate the whitening effect of green tea seed shell as an industrial byproduct. Green tea seed shell extract (GTSE) was obtained by ethanol extraction, and the yield was 1.24%. 1,1-Diphenyl-2-picrylhydrazyl radical scavenging and tyrosinase inhibitory activity of GTSE increased dose-dependently. To estimate inhibition of melanin synthesis, viability was tested in B16BL6 melanoma cells. GTSE treatment induced cytotoxicity at a concentration higher than $125{\mu}g/mL$ but did not induce cytoxicity lower than $62.5{\mu}g/mL$. Thus, we fixed the optimal concentration at $62.5{\mu}g/mL$. Using this optimal concentration, melanin synthesis inhibition was measured, and GTSE treatment significantly reduced melanin synthesis induced by ${\alpha}$-melanin stimulating hormone. Therefore, the results indicate that green tea seed shell extracts may have potential melanin synthesis inhibitory activity and may be useful for development of whitening material as a natural ingredient.

본 연구는 산업 부산물의 이용성 향상을 위하여 폐자원인 녹차씨 껍질 추출물의 미백 활성을 평가하기 위하여 수행되었다. 녹차씨 껍질로부터 유용성 성분을 얻기 위하여 에탄올 추출을 한 결과 건조중량 대비 1.24%의 추출물의 수율을 얻을 수 있었고, DPPH 라디칼 소거능 및 tyrosinase 억제능을 관찰한 결과 녹차씨 껍질 추출물의 농도가 증가할수록 활성이 유의적으로 증가하는 것으로 나타났다. 또한 이러한 미백 효과가 세포 내에서도 일어나는지에 관하여 알아보기 위하여 melanoma 세포인 B16BL6에 ${\alpha}$-MSH를 처리하여 melanin의 형성을 촉진시키는 melanogenesis 과정을 유도한 후 녹차씨 껍질 추출물을 처리한 결과 농도 의존적으로 melanin의 형성이 감소되는 것을 알 수 있었다. 이상의 결과로 녹차씨 껍질 추출물의 미백 활성을 확인할 수 있었으며, 이를 활용하여 식품 및 화장품의 기능성 소재로 이용한다면 산업 부산물인 녹차씨 껍질을 활용하는 차원에서 그 경제적 가치가 매우 클 것으로 사료된다.

Keywords

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