Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Antioxidant Activity from Different Root Parts of 6-year-old Panax ginseng C.A. Meyer (Yun-poong)

6년생 인삼(연풍)의 뿌리부위별 항산화 활성

  • Jo, Ji-Eun (Dept. of Food and Nutrition, Chungnam National University) ;
  • Kim, Kyoung-Hee (Dept. of Food and Nutrition, Chungnam National University) ;
  • Kim, Mi-Seon (Dept. of Food and Nutrition, Chungnam National University) ;
  • Choi, Jae-Eul (College of Agriculture & Life Science, Chungnam National University) ;
  • Byun, Myung-Woo (Dept. of Culinary Nutrition, Woosong University) ;
  • Yook, Hong-Sun (Dept. of Food and Nutrition, Chungnam National University)
  • 조지은 (충남대학교 식품영양학과) ;
  • 김경희 (충남대학교 식품영양학과) ;
  • 김미선 (충남대학교 식품영양학과) ;
  • 최재을 (충남대학교 농업생명과학대학) ;
  • 변명우 (우송대학교 외식조리영양학부) ;
  • 육홍선 (충남대학교 식품영양학과)
  • Received : 2011.01.05
  • Accepted : 2011.03.08
  • Published : 2011.04.30
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Abstract

The objective of this study was to evaluate the contents of reducing sugar and total polyphenol and the antioxidant activity of freeze-dried ginseng (Panax ginseng C.A. meyer cv Yun-poong). Ginseng root consists of the main root (MR), lateral root (LR) and fine root (FR). These roots were sorted into 3~4 groups (MR 1~4 groups, LR 1~4 groups, FR 1~3 groups) depending on the diameter of center region. The reducing sugar content has no influence on the diameter, but the reducing sugar content was decreased by subdivision. Total polyphenol contents of ginseng were the highest in FR-3 among all others. The antioxidant activity was measured using DPPH radical scavenging activity and ABTS radical scavenging activity. The $IC_{50}$ (50% inhibitory concentration) value of the hydrogen donating activity was the highest in FR-3 as 7.03 mg/mL and the lowest in MR-2 as 37.02 mg/mL. Overall, hydrogen donating activity of FR was higher than the main root and lateral root significantly (p<0.05). The ABTS radical scavenging activity in FR-3 showed the highest radical scavenging activity as 25.49%. This study's findings suggest that the total polyphenol contents and antioxidant activity of ginseng were the highest in FR-3, and that polyphenol contents and antioxidant activity of ginseng were related to root area and diameter.

6년생 인삼(Panax ginseng C.A. meyer, 연풍)의 뿌리를 주근, 지근, 세근으로 나누고 각각의 중앙부위의 직경에 따라, 직경이 큰 것에서부터 1에서 4까지 등급을 나누었다(MR 1~4, LR 1~4, FR 1~3). 각각의 시료는 동결건조한 뒤 환원당 함량, 페놀함량 및 항산화 효과를 비교하였다. 환원당 함량은 직경에 따른 영향은 없었으나, 주근, 지근, 세근으로 부위가 세분화됨에 따라 환원당 함량이 감소하는 경향을 나타내었다. 총 페놀화합물의 함량은 FR-3이 8.19 mg/g으로 다른 부위보다 2배 정도 높은 페놀함량을 나타내었다. 수소 공여능의 $IC_{50}$값을 비교한 결과 FR-3의 $IC_{50}$ 값이 7.03 mg/mL로 가장 높았고, MR-2에서 37.02 mg/mL로 가장 낮았다. 전체적으로 세근의 수소공여능이 주근과 지근에 비해 높았다. ABTS 라디칼 소거능 역시 FR-3에서 24.87%의 가장 높은 라디칼 소거능을 나타내, 다른 부위보다 세근의 활성이 유의적으로 높음을 알 수 있었다. FRAP value의 측정 결과 역시 FR-3이 $0.23{\mu}M$로 가장 높게 나타났다. 본 연구를 통해 인삼 연풍의 항산화 활성은 주근과 지근보다는 세근에서 유의적으로 높게 나타났으며, 세근 중에서도 직경이 작은 부위에서 높은 페놀함량 및 항산화 활성을 나타내는 것을 알 수 있었다.

Keywords

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