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KMID : 1134820110400040493
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Journal of the Korean Society of Food Science and Nutrition
2011 Volume.40 No. 4 p.493 ~ p.499
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Antioxidant Activity from Different Root Parts of 6-year-old Panax ginseng C.A. Meyer (Yun-poong)
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Jo Ji-Eun
Kim Kyoung-Hee
Kim Mi-Seon
Choi Jae-Eul
Byun Myung-Woo
Yook Hong-Sun
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Abstract
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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% 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.
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KEYWORD
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ginseng, root part, antioxidant activity, Yun-poong
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