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Antioxidant Activity of Peel from Gardenia jasminoides Ellis Fructus Extracted by Various Solvents

치자(Gardenia jasminoides Ellis fructus) 껍질 추출물의 항산화 활성

  • Jin, Dong-Hyeok (Department of Food Science and Technology, Pusan National University) ;
  • Oh, Da-Young (Department of Food Science and Technology, Pusan National University) ;
  • Kim, Han-Soo (Department of Food Science and Technology, Pusan National University)
  • Received : 2017.02.07
  • Accepted : 2017.03.30
  • Published : 2017.03.30

Abstract

The purpose of this study was to measure the bioactivity and antioxidant activity of peel from Gardenia jasminoides Ellis fructus (GJE). GJE have been known to contain functional materials such as crocin, crocetin, geniposide, gardenosid, geniposidic acid, iridoid glycosides etc. We were separated into GJE peel. After that, we determined proanthocyanidin. GJE peel were extracted by 70% methanol, ethyl acetate (EA) and distilled water (DW) of three solvents. To investigate by the solvent extract of flavonoid content and value as a functional food ingredient of GJE peel through antioxidant activities (DPPH radical scavenging activity, ABTS radical scavenging activity, superoxide dismutase like ability, hydroxyl radical scavenging activity, ferrous ion-chelating capacity) were performed. Solvent extract antioxidant activity of increasing concentrations (0.2, 0.4, 0.6 mg/mL) were significantly increased (p<0.05). GJE peel extracts showed lower activity than positive control (ascorbic acid, BHA, EDTA). These results, by a solvent of peel were found that the relationship with the increase of flavonoid content increased physiological activity. The antioxidant activity of the extract from the other except for the EA extract on peel was observed at a high level. The results suggest that GJE peel can be used as nutraceutical foods and natural antioxidant.

치자 껍질의 항산화 활성을 측정하기 위하여 70% methanol, distilled water (DW) 및 ethyl acetate (EA)의 3가지 용매를 사용한 추출물의 용매 별 flavonoid 함량 및 항산화 활성, 금속 chelating 능력 측정을 통하여 치자 껍질의 기능성 식품 재료로서의 가치를 검토한 결과, 치자 껍질의 proanthocyanidin 함량은 $48.165{\pm}0.811mg\;CE/g\;DW$로 나타났으며, 추출 수율은 70% methanol(36.26%), DW (39.87%), EA (2.88%) 로 나타났다. 추출 용매 별 항산화 활성은 농도(0.2, 0.4, 0.6 mg/mL)가 증가할수록 유의적으로 증가하였으며, control로 사용된 ascorbic acid, BHA, EDTA 보다는 낮은 활성이 관찰되었다. Flavonoid 함량(mg QE/g)은 70% methanol (0.416), DW (0.225), EA(0.212) 순으로 확인되었으며 다른 항산화 분석 및 금속 chelating 능력 실험에서도 이와 유사하게 관찰되어 모든 분석에서 70% methanol 추출물이 가장 활성이 강한 것으로 나타났다. 이상의 결과를 미루어 볼 때 치자 껍질의 용매 별 flavonoid 함량에 따라 항산화능, 금속 chelating 능력이 증가하는 것으로 사료되며, EA 추출물을 제외한 다른 추출물에서의 수율과 항산화 활성은 높은 수준으로 관찰되었다. 따라서 치자의 껍질은 proanthocyanidin과 flavonoid 화합물을 다량 함유하고 있으며 그로 인한 높은 항산화 활성과 생리활성을 가지고 있어 기능성 식품 및 천연항산화제로서의 가치가 매우 기대된다.

Keywords

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