Journal of Plant Biotechnology

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Physiological activity of methanol extract and fractions from Citrus grandis Osbeck pericarp

당유자 과피 메탄올 추출물 및 분획물의 생리활성 검정

  • Ko, Hyun Min (Major in Plant Resource and Environment, SARI, Jeju National University) ;
  • Kim, Ju-Sung (Major in Plant Resource and Environment, SARI, Jeju National University)
  • 고현민 (제주대학교 식물자원환경전공) ;
  • 김주성 (제주대학교 식물자원환경전공)
  • Received : 2018.08.28
  • Accepted : 2018.09.12
  • Published : 2018.09.30
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Abstract

Citrus grandis Osbeck pericarp is used as tea, herbal medicine, etc., but is not commercialized in various ways. So, in this study, we identified potential for use of Citrus grandis Osbeck as health functional foods, cosmetics and food preservatives. Methanol extract of Citrus grandis Osbeck pericarp was fractionated with hexane, dichloromethane, ethyl acetate and butanol, to quantitatively analyze total phenol and flavonoid, and investigate antioxidative and enzyme inhibitory activities. Total phenol and flavonoid contents were highest in ethyl acetate fraction, FRAP and ORAC results also revealed highest activity in proportion to total phenol content. DPPH radical scavenging activity revealed that ethyl acetate, butanol and dichloromethane fraction manifested highest activity without significant difference. However, dichloromethane fraction revealed higher TEAC value and tyrosinase inhibitory activity than ethyl acetate fraction, and hexane fraction manifested best results with superoxide radical scavenging activity and ${\alpha}-glucosidase$ inhibitory activity. Antimicrobial activity also revealed best effect in dichloromethane and hexane fractions. So, based on the following results, use of dichloromethane fraction as material of natural functional cosmetics, ethyl acetate fraction for health functional foods, and hexane fractions for pharmaceuticals and food preservatives, would be most practical for product development.

당유자 과피는 차, 한약재 등으로 이용되고 있으나 다양하게 제품화 되고 있지는 않은 실정이다. 따라서 본 연구에서는 당유자 과피의 건강 기능성 식품 및 화장품, 식품보존제 등의 활용 가능성을 확인하였다. 당유자 과피 메탄올 추출물을 헥산, 디클로로메탄, 에틸아세테이트, 부탄올 순으로 분획하여 총 페놀 및 플라보노이드 정량 분석과 항산화 활성, 효소 저해활성, 항미생물 활성을 탐색하였다. 총 페놀 및 플라보노이드 함량은 에틸아세테이트 분획물에서 가장 높은 함량을 보였으며 FRAP과 ORAC 실험결과 또한 총 페놀함량과 비례하여 가장 우수한 활성이 측정되었다. 또한 DPPH radical 소거능 실험 결과 에틸아세테이트, 부탄올, 디클로로메탄 분획물은 유의적 차이 없이 가장 높은 활성을 나타내었다. 그러나 디클로로메탄 분획물은 TEAC 값과 tyrosinase 저해 활성이 에틸아세테이트 분획물보다 더 높은 활성을 보였으며 헥산 분획물에서는 superoxide radical 소거능 및 ${\alpha}-glucosidase$ 저해활성이 가장 우수한 결과를 보였다. 또한 항균 활성은 디클로로메탄 및 헥산 분획물에서 가장 우수한 효과를 보였다. 따라서 다음의 결과를 바탕으로 천연 기능성 화장품의 소재로는 디클로로메탄 분획물, 건강기능성 식품의 소재로는 에틸아세테이트 분획물, 의약품 및 식품보존제의 소재로는 헥산 분획물을 활용하는 것이 각 제품 개발에 있어 가장 유용할 것으로 사료된다.

Keywords

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