Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Preparation and Characterization of Phytochemical-Rich Extract from Sasa quelpaertensis Leaf

식물화합물 다량 함유 제주조릿대 잎 추출물의 제조와 특성

  • Lee, Ju Yeop (Jeju Sasa Industry Development Agency, Jeju National University) ;
  • Ko, Hee Chul (Jeju Sasa Industry Development Agency, Jeju National University) ;
  • Jang, Mi Gyeong (Department of Biology, Jeju National University) ;
  • Kim, Se Jae (Jeju Sasa Industry Development Agency, Jeju National University)
  • 이주엽 (제주대학교 제주조릿대 사업단) ;
  • 고희철 (제주대학교 제주조릿대 사업단) ;
  • 장미경 (제주대학교 생물학과) ;
  • 김세재 (제주대학교 제주조릿대 사업단)
  • Received : 2016.09.29
  • Accepted : 2016.11.15
  • Published : 2016.11.30
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Abstract

Sasa species leaves have been used in traditional medicine for their anti-inflammatory, antipyretic, and diuretic properties. Sasa quelpaertensis Nakai is a small bamboo grass that grows only on Mt. Halla on Jeju Island, Republic of Korea. This small bamboo grass has recently been the focus of much attention due to its potential biomass as well as its beneficial health effects. In this study, to promote the efficient utilization of the S. quelpaertensis leaf, we established a simple preparation method for phytochemical-rich extract (PRE) by comparing phytochemical contents and biological activities according to extraction methods. high performance liquid chromatography (HPLC) analysis revealed that the contents of two major phytochemicals such as, tricin (5.35 mg/g) and p-coumaric acid (44.10 mg/g) contained in PRE were higher than those in fresh hot water extract (SQH, p-coumaric 23.39 mg/g, tricin 0.18 mg/g) and ethanol extract (SQE, p-coumaric 10.8 mg/g, tricin 0.38 mg/g). The antioxidant activities [1,1-diphenyl-2-picrylhydrazy (DPPH) radical scavenging activity, 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical scavenging activity, nitric oxide (NO) scavenging activity, and xanthine oxidase inhibitory activity] of PRE were higher than those of SQH and SQE. PRE effectively inhibited NO production in LSP- stimulation RAW 264.7 cells, and the growth of human promyelocytic leukemia (HL-60) cells. These results suggest that PRE has a potential as a promising antioxidant and anti-inflammatory agent.

조릿대 속 식물의 잎은 한의학적으로 염증, 해열, 이뇨 관련 질환 치료에 사용되어 왔다. 제주조릿대는 제주도 한라산 일대에서만 분포되어있는 토착식물이다. 본 연구에서는 제주조릿대 잎 추출물의 산업적 활용 효율을 높이기 위해 추출방법에 따른 식물화합물의 함량과 그 생리 활성을 비교함으로써 기능성이 강화된 식물화합물 다량함유 추출물(phytochemical-rich extract; PRE)의 제조방법을 개발하였다. PRE는 열수추출물과 알코올추출물에 비하여 높은 폴리페놀 함량을 나타내었고, 조릿대 주요성분인 p-coumaric acid (44.10 mg/g)와 tricin (5.35 mg/g)의 함량은 열추추출물(p-coumaric 23.39 mg/g, tricin 0.18 mg/g)과 알코올 추출물(p-coumaric 10.8 mg/g, tricin 0.38 mg/g)에 비해 매우 높았다. RPE는 다른 추출물에 비해 총 폴리페놀 함량과 항산화 활성[1,1-diphenyl-2-picrylhydrazy(DPPH) 소거활성, 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) 소거활성, nitric oxide(NO) 소거활성, xanthine oxidase 저해활성]이 가장 높았다. 그리고 RPE는 LPS로 자극시킨 RAW 264.7 세포에서 NO 생성($IC_{50}=59.1{\mu}g/ml$)과 혈액 암(HL-60) 세포의 성장을 효과적으로 억제하였다. 본 연구결과는 PRE가 식물화합물을 다량 함유하고 있어 항산화 및 항염소재로서 활용가치가 있음을 제시해 준다.

Keywords

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