In vitro Antioxidant Activity of Mentha viridis L. and Mentha piperita L.

박하의 in vitro 항산화활성

  • Published : 2005.12.30

Abstract

For selecting a new candidate as functional material, this study was conducted on in vitro antioxidant activity and total phenol content of methanol and water extracts prepared from two Mentha species (M viridis L. (M spicata L.) and Mentha piperita L, Extracts of M. viridis showed more efficient scavenging activity on superoxide and DPPH ${({\alpha},{\alpha}-diphenyl-{\beta}-picrylhydrazyl)}$ radical and inhibitory activity on oxidation of human low density lipoprotein (LDL) induced by $CuSO_4$ and auto-oxidation of linoleic acid than those of M piprita. Methanol extract $(65.88%{\sim}77.59%)$ and water extract $(37.69%{\sim}87.21%)$ of M. viridis also exhibited more potent inhibitory activity on LDL oxidation than that of ${{\alpha}-tocopherol\;(28.37%{\sim}66.54%)}$ at ${1{\sim}100\;{\mu}g/ml}$ of final concentration. The total phenol contents of methanol extract and water extract of Mviridis (17.95% & 10.18%, respectively) as tannic acid equivalent were higher than those of M piperita (15.44% & 9.19%). But the yields of methanol and water extracts of M. viridis (13.3 % & 13.5%) were lower than those of M. piperita (14.1 % & 14.6%). The results implies that the extracts from M. viridis (spicata) is more useful material for industrialization as functional food than those from M. piperita.

새로운 기능성 소재를 발굴하기 위한 목적으로 2종의 박하(M. viridis (spicata), M. piperita)를 대상으로 수행된 몇 가지 in vitro 항산화계에서의 활성, 총페놀 함량 및 수율을 분석한 결과는 다음과 같다. 1. Superoxide 라디칼에 대한 박하의 소거능은 M. viridis가 M. piperita 보다 우수하였으며 특히 물 추출물은 대조물질인 ascorbic acid보다 우수하였다. 2. DPPH 라디칼에 대한 소거능은 메탄올 추출물 및 물 추출물 모두에서 M. viridis가 M. piperita보다 우수하였으며 특히 M. viridis의 메탄올 추출물은 롤${\alpha}-tocopherol$과 비슷한 수준이었다. 3. 사람의 저밀도지단백질의 산화에 대한 박하의 저해활성을 분석한 결과는 M. viridis가 M.piperita 보다 우수하였으며 M. viridis의 모든 추출물 ${(65.88%{\sim}77.59%,\;37.69%{\sim}87.21%)}$${{\alpha}-tocopherol\;(28.37%{\sim}66.54%)}$보다 월등하게 우수하였다. 4. Linoleic acid의 산화에 대한 저해효과는 M. viridis가 M. piperita보다 높았으며 ${\alpha}-tocopherol$의 활성에 근접하는 수준이었다. 5. 총페놀 함량은 M. viridis (17.95% & 10.18%)가 M. piperita (15.44% & 9.19%)보다 높은 값을 나타내었으며 메탄올 추출물이 물 추출물보다 그 함량이 높았다. 6. 추출물의 수율은 메탄을 추출물 및 물 추출물 모두에서 M. piperita (14.1% & 14.6%)가 M. viridis (13.3% & 13.5%)보다 높게 나타나 항산화활성 및 총페놀 함량과는 상반되는 결과를 나타내었다. 이상의 실험결과를 종합할 때, 실험된 박하 중에서 M. viridis가 M. piperita보다 우수한 산업화 후보 자원이라고 사료된다.

Keywords

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