Earticle

초록

영어

The antioxidant activity of Rucommia ulmoides Oliver's bark extracts was qualitatively and quantitatively evaluated. The extraction yields increased with increasing the extraction
temperature, and an optimal extraction temperature is 78℃. Major antioxidant components of the extracts are 5-dihydroxybenzoic acid, caffeic acid, and tannin. IC50(1,140mg L-1 at 100mM ,2-diphenyl-lpicrylhydrazyl(DPPH)), maximum radical scavenging ability(24∼26μg-DPPH mg-extract-1), and reaction constant of the extracts are have similar values, irrespective of extraction temperature. As a new analytical method for the radical scavenging ability of antioxidant, the kinetic analysis of DPPH scavenging were suggested. The DPPH scavenging by antioxidants was expressed with the first order reaction, and the rate constants of DPPH scavenging reaction by the extracts and butylated hydroxytoluene (BHT) were 1.18∼1.28×10-5 and 3.02× 10-5 mg-antioxidant-1 min-1 L, respectively.
In conclusion, instead of IC50, the kinetic analysis presented in this study can be applied to assess the radical scavenging ability of antioxidant.

목차

Abstract
 서론
 연구방법
  1. 두충 수피의 추출 및 농축
  2. 항산화물질의 분석
  3. DPPH 유리 라디칼 소거능에 의한 전자공여능 측정
  4. 유리 라디칼 소거능의 동력학적 특성
 결과 및 고찰
  1. 추출수율과 항산화물질의 함량
  2. 추출물의 항산화능
  3. 항산화능의 속도론적 해석
 결론
 참고문헌

키워드

저자

• 신경아 [ Shin, Kyung A | 숭실대학교 환경화학공학과 뷰티공학전공 ]
• 조춘구 [ Zhoh, Choon Koo | 숭실대학교 환경화학공학과 뷰티공학전공 ] Corresponding Author
• 류희욱 [ Ryu, Hee Wook | 숭실대학교 환경화학공학과 뷰티공학전공 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국피부미용향장학회지 [Journal of the Korean Society of Esthetics & Cosmeceutics]

• 간기

  계간

• pISSN

  1975-3713

• 수록기간

  2006~2014

• 십진분류

  KDC 593 DDC 646