Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Screening for Antioxidative Activity of Oriental Medicinal Plant Materials

시판 한약재에 대한 항산화 활성 검정

  • Published : 2002.09.30
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Abstract

Antioxidative effect of 42 medicinal plant extracts was screened to search natural antioxidants. The extracts of Terminalia chebula, Caesalpinia sappan, Sanguisorba officinalis, Rubus coreanus, and Alpinia katsumadai showed strong inhibition effect on DPPH radical, and LDL oxidation. Those of Eugenia caryophyllata, Alpinia officinarum, Zingiber officinale, Xanthium strumarium, Sophora japonica, Aristolochia contorta, and Alpinia katsumadai exhibited potent antioxidative activity on linoleic acid peroxidation. Among 42 medicinal plant materials, the extract of Terminalia chebula showed the highest scavenging activity $(3.08\;{\mu}g/ml)$ on DPPH radical which was higher than that $(13.52\;{\mu}g/ml)$ of ${\alpha}-tocopherol$. The extract of Terminalia chebula showed also stronger inhibition activity on LDL oxidation than that of ${\alpha}-tocopherol$ did.

본 연구는 천연 항산화제를 찾아내기 위해 42종의 한약재를 대상으로 항산화능을 검색하였으며 그 결과 DPPH에 대해서는 가자, 소목, 지유, 복분자, 초두구 등이 Linoleic Acid 과산화에 대해서는 정향, 양강, 건강, 창이자, 괴화, 마두령, 초두구 등이 높은 항산화력을 나타내었다. 또한 DPPH에 대해 높은 소거활성을 보였던 가자, 소목, 지유, 복분자, 초두구 등의 LDL 산화에 대한 저해 효과를 실험한 결과 5가지 한약재 모두 알파토코페롤보다 높은 효력을 나타내었다. 특히 가자는 실험된 42종의 한약재 중에서 DPPH 소거능 $(3.08\;{\mu}g/ml)$이 가장 높았으며 이 값은 알파-토코페롤의 $(13.52\;{\mu}g/ml)$보다 4배 이상 높은 수치였고 LDL 산화 억제 효능에 있어서도 21.55 및 $(43.10\;{\mu}g/ml)$의 농도에서 각각 53% 및 73%로서 알파-토코페롤의 21% 및 23%보다 $2{\sim}3$배 이상 높은 수치였다.

Keywords

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