Antioxidative Activities of Different Part Extracts of Physalis alkekengi var. francheti (Winter Cherry)

부위별 꽈리(Physalis alkekengi var. francheti) 추출물의 항산화효과

  • Chung, Hai-Jung (Department of Food Science & Nutrition, Daejin University)
  • 정해정 (대진대학교 식품영양학과)
  • Received : 2010.06.14
  • Accepted : 2010.11.12
  • Published : 2010.12.30

Abstract

The total phenolic contents and the antioxidant activities of methanolic extracts of different parts (fruit, calyx, leaf, stem, and root) of Physalis alkekengi var. francheti were investigated using established in vitro systems including DPPH radical-scavenging, nitrite-scavenging, superoxide anion radical-scavenging activity, measurement of reducing power, and assessment of the metal-chelating effect. The highest extraction yield was from fruit (52.55%), whereas the lowest levels were obtained from root (10.49%) and stem (12.88%).The leaf extract had the highest total phenolic (58.47 mg/g) and total flavonoid (4.83 mg/g) contents, plus the greatest antioxidant activity, as shown by the DPPH radical-scavenging assay, and the highest levels of reducing power at concentrations of 1 and 5 mg/mL. In addition, the calyx also showed good antioxidant activity.These findings indicate that methanolic extracts of leaf and calyx may be useful in the food manufacturing and nutraceutical industries.

본 실험에서는 꽈리를 열매, 꽃받침, 잎, 줄기, 뿌리 등 부위별로 구분하여 메탄올로 추출하고 추출 수율, 총페놀 함량, 총플라보노이드 함량, DPPH radical 소거능, 아질산염 소거능, superoxide anion radical 소거능, 환원력, 철 이온에 대한 킬레이트 효과 등을 측정하였다. 추출 수율은 열매가 가장 높았고 그 다음으로 꽃받침, 잎, 줄기, 뿌리 순이었다. 총페놀 및 총플라보노이드 함량은 잎 추출물이 가장 높았고 그 다음으로 꽃받침 추출물이었다. DPPH radical 소거능은 1 mg/mL 및 5 mg/mL의 농도에서 잎 추출물이 가장 높았고 꽃받침 추출물도 높은 활성을 나타내었다. 아질산염 소거능은 모든 부위에서 농도에 따라 유의적인 차이 없이 높게 나타났다. 꽈리 추출물의 superoxide anion radical 소거능은 꽃받침과 잎 추출물이 높은 활성을 나타내었다. 환원력은 잎 추출물에서 가장 높게 나타났고 철 이온에 대한 킬레이트 효과는 꽃받침, 줄기 및 뿌리 추출물이 높은 활성을 나타내었다. 이상의 결과를 종합하여 보면 꽈리의 잎 추출물에서 총 페놀 함량, 총플라보노이드 함량과 항산화 활성이 탁월하게 높게 나타났고 그 다음으로 꽃받침 추출물이 우수한 항산화 활성을 나타내어 향후 이를 이용한 천연 항산화제로 개발 가능성이 시사되었다.

Keywords

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