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초록
AI-Helper 아이콘AI-Helper

차(Camellia sinensis)는 세계적으로 애용되는 음료이다. 그 중, 아시아권에서 주로 소비되는 녹차는 다양한 생리활성을 가지고 있어 화장품, 기능성식품을 위한 기능성 소재로서 선호되고 있다. 녹차의 피부에 대한 활성은 세포보호에서부터 피부 기질 단백질의 합성까지 다양하게 나타난다. 녹차 폴리페놀(green tea polyphenols; GTPs)은 활성을 나타내는 주성분으로서 항산화 활성 이외에 항암, 항염증, 피부면역능 저하방지활성 등을 보이며, 세포내 신호전달 경로에도 관여한다 GTPs는 표피각질형성세포에서 자외선 조사에 의한 산화 스트레스를 감소시키고, 그에 따르는 mitogen-activated protein kinase (MAPK) 신호전달과 세포사멸을 억제한다. 또한, 같은 세포에서 tumor necrosis factor alpha $(TNF{\alpha})$나 다른 화학물질에 의해 cyclooxygenase-2(COX-2), interleukin-8 (IL-8) 및 vascular endothelial growth factor (VEGF) 같은 염증매개물질이 유발되는 것을 막아준다. 또한, GTPs는 등물실험에서 화학물질이나 자외선에 의한 피부암발생도 억제하는데, 경구투여 외에 경피투여로도 효과가 있었다. 피부보호작용 이외에도 GTPs는 각질형성세포의 분화촉진, 노화된 피부세포의 증식능 회복, 피부기질단백질의 분해억제 등의 기능이 있으며, 피부세포에서의 기질단백질 생합성을 직접적으로 촉진하기도 한다. 녹차성분이 보이는 이러한 피부에 대한 활성은, 제형 측면에서의 연구가 진행되어 감에 따라 보다 효과적인 피부를 위한 소재로서의 사용 가능성을 더욱 높여주고 있다.

Abstract AI-Helper 아이콘AI-Helper

Tea (Camellia sinenis) is a popular beverage consumed worldwide. Since green tea, mainly consumed in Asia, has various biological activities, green tea components became one of the most favorite candidates as a functional materials for cosmetics and functional foods. The biological activities of gre...

주제어

AI 본문요약
AI-Helper 아이콘 AI-Helper

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문제 정의

  • 본 총설에서는 녹차와 피부에 대한 지금까지의 연구결과들을 살펴봄으로써 피부를 위한 미용식품, 화장품 및 의약품의 기능성 신소재로서 녹차의 가치를 재조명 해보고자 한다. 녹차의 피부생리활성에 대한 첫 번째 연구주제는 녹차가 햇볕이나 화학물질에 의한 암발생을 방어할 수 있는가를 확인하는 것이었다.
  • 각 연구자들의 기초연구를 통하여 GTPs 는 표피에서 항산화제로 작용하여 활성산소종(active ox-ygen species; ROS)을 소거하는 작용 이외에도 다른 유전자나 신호전달과정을 조절하는 기능도 있다는 것이 알려졌다. 본문에서는 녹차의 피부보호효과를 비롯한 여러 가지 피부활성에 대한 연구결과와 GTPs가 나타내는 작용기전 상의 특성을 알아보고, 향후의 전개방향에 대한 의견을 제시해보고자 한다.
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